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Papers presented in the Study Commissions at the 31st Annual Meeting of the E.A.A.P. in Munich, 1980
170
PAPERS PRESENTED IN THE STUDY COMMISSIONS AT THE 31ST A N N U A L M E E T I N G O F T H E E.A.A.P. IN M U N I C H , 1 9 8 0
(The Roman Numerals refer to the number of the session. In addition each paper has a code number. Individual papers may be obtained via the Secretariat General of the E.A.A.P., Corso Trieste 67, 1-00198 Roma, Italy. Readers should note that the abstracts of papers presented in the Commission on Animal Genetics will be published in the "Annales de G~n~tique et de S~lection Animale".) JOINT SESSION: ANIMAL GENETICS/CATTLE PRODUCTION II.
Improvement of fertility in cattle
GC 2.1 Karg, H. (Federal Republic of Germany). Physiological impact on fertility in cattle. GC 2.2 Sreenan, J.M. (Ireland). Biotechnical measures for improvement of fertility in cattle. GC 2.3 Philipsson, J. (Sweden). Genetic aspects of fertility in cattle. GC 2.4 Syrstad, O. (Norway). Selection for fertility on the basis of AI data. GC 2.5 Bar-Anan, R. (Israel). Genetic inferences from the frequency distribution of return intervals in dairy cows. GC 2.6 Piper, L.R., Bindon, B.M. (Australia) and Barlow, R. (Ireland). Selection for twins in beef herds. GC 2.7 Gaillard, C. (Switzerland). Effects of calving difficulty and birth weight of the calf on the subsequent fertility in Simmental cattle. GC 2.8 Drees, B., Claus, J., Bergmann, J., M~ickle, N. and Kalm, E. (Federal Republic of Germany). Comparison of parameters for the evaluation of insemination success. GC 2.9 Schlote, W. and Miinks, J. (Federal Republic of Germany). Population parameters of semen characteristics and non-return rate of test bulls. GC 2.10 Gasteiger, J. and Specker, C. (Federal Republic of Germany). Analysis of fertility data in AI populations. GC 2.13 Zarnecki, A. and Mrowiec, S. (Poland). Preliminary analysis of fertility traits in Polish Lowland cattle. GC 2.14 Berglund, B., Edqvist, L.-E., Jansson, L., Kindahl, H., Larsson, K., Malmqvist, A. and Swensson, C. (Sweden). Reproductive performance of dairy cows from parturition to conception. GC 2.15 Poga~ar, J. (Yugoslavia). Environmental influence on calving interval and selection possibilities. GC 2.16 Kilkenny, J.B. and Allen, D.M. (United Kingdom). Improving fertility in cattle -management aspects. GC 2.17 Kelem~ri, G. and Horn, A. (Hungary). Comparative study on maternal performance of different suckler cow genotypes. GC 2.18 Gravert, H.O. and Pabst, K. (Federal Republic of Germany). Protein content in milk and fertility in cows. GC 2.19 Chavaz, J. and Hagger, Ch. (Switzerland). Effect of herd environment and milk yield on various fertility traits in Swiss Brown cattle. GC 2.20 Hagger, Ch. and Chavaz, J. (Switzerland). Influence of reproductive performance on 305-day lactation records in Swiss Brown cattle.
171
GC 2.21 Pape, H.Ch., Claus, J. and Kalm, E. (Federal Republic of Germany). Genetical analysis of life-time production of dairy cows. GC 2.22 Stolzenburg, U. and SchSnmuth, G. (German Democratic Republic). First results of an experiment for increasing the frequency of twinning in cattle. GC 2.23 Solbu, H. (Norway). Influence of twinning on retained placenta and calving difficulties in Norwegian dairy cattle. GC 2.24 KSgel, S., Strasser, H. and Lampeter, W.W. (Federal Republic of Germany). Twins in a Simmental suckler herd. GC 2.26 F6rster, M. (Federal Republic of Germany). Chromosome aberrations as indicator of cattle fertility. GC 2.27 Lampeter, W.W., Graf, F. and Kruff, B. (Federal Republic of Germany). Experiences with non-surgical transfer of deep-frozen embryos. GC 2.28 Schilling, E., Smidt, D. and Sacher, B. (Federal Republic of Germany). Quality of ova and embryos from superovulating cows. GC 2.29 Voss, H.-J. and Holtz, W. (Federal Republic of Germany). Oestrus synchronization in dairy cows with prostaglandins or gestagens -- a comparative field study. GC 2.30 Schilling, E. and Smidt, D. (Federal Republic of Germany). Oestrus synchronization in heifers with prostaglandins. GC 2.31 Elsaesser, F., Sacher, B., Thielscher, H.H., Unshelm, J. and Smidt, D. (Federal Republic of Germany). Use of milk progesterone measurements in embryo transfer programs. GC 2.32 Zwiauer, D. and Claus, R. (Federal Republic of Germany). Relationship between cow fertility and milk progesterone values. GC 2.33 Drew, B. (United Kingdom). The effect of progesterone treatment on the fertility of dairy cows. JOINT SESSION: ANIMAL GENETICS/PIG PRODUCTION I I I . The effect of monofactorial factors on quantitative traits in pig production GP 3.1 Simon, D.L. (Federal Republic of Germany). Is halothane isusceptibility caused by a single locus, and what other single-locus traits are important in the pig? GP 3.2 Franceschi, P.F. and Ollivier, L. (France). Frequencies of important single genes in pig populations. GP 3.3 Andresen, E. and Jensen, P. (Denmark). Helpful linkage relations between identifiable single-locus traits in the pig, including the Hal-locus. GP 3.4 Brascamp, E.W., Eikelenboom, G. and Minkema, D. (The Netherlands). The effect of a single locus (halothane) on variances of and correlations among quantitative production traits. GP 3.5 Smith, C. and Webb, A.J. (United Kingdom). Effects of major genes on animal breeding strategies. GP 3.6 S6nnichsen, M.L., Claus, J. and Kalm, E. (Federal Republic of Germany). Halothane susceptibility in relation to growth and carcass performance of Pi~train and Belgium Landrace sirelines. GP 3.7 Kov~ch, G. (Hungary). Phenotypic correlations among fattening performances and meat quality o f halothane positive and negative KA--HYB hybrid swine populations. GP 3.8 Guerin, G., Ollivier, L. and Sellier, P. (France). Gene frequencies and linkage disequilibria at the Hal, PHI and 6-PGD loci in some French pig breeds. Preliminary results. GP 3.9 Schneider, A., SchwSrer, D. and Blum, J. (Switzerland). Production and reproduction traits of Swiss Landrace pigs in relation to their genotype for halothane sensitivity. GP 3.10 Edfors-Lilja, I., Petersson, H. and Gahne, B. (Sweden). Adhesion of K88 positive E. coli to the small intestine of Swedish Landrace × Swedish Yorkshire pigs.
172 JOINT SESSION: ANIMAL NUTRITION/SHEEP AND GOAT PRODUCTION IV. Developments in sheep nutrition NS 4.3 Qrskov, E.R. and Robinson, J.J. (United Kingdom). The application of modern concepts of ruminant protein nutrition to sheep production systems. NS 4.4 Visscher, A.H., Garssen, G.J. and Zaalmink, W. (The Netherlands). Relationship between concentrates fed and the copper concentration in liver dry matter in five sheep genotypes. NS 4.5 Cumlivski, B. (Czechoslovakia). Taste and dietary effects of taken dry bulky feeds in Merino breeds. NS 4.6 Sauvant, D., Giger, S. and Morand-Fehr, P. (France). Influence of the carbohydrate composition on the bulkiness of feed compounds.
JOINT SESSION: ANIMAL NUTRITION/HORSE PRODUCTION III. Digestion in the non-ruminant herbivore NH 3.1 Tisserand, J.L. (France). Protein requirements and digestion in the horse. NH 3.2. Meyer, H. (Federal Republic of Germany). Metabolism and requirement of sodium and magnesium in horses. NH 3.3 HSrnicke, H. (Federal Republic of Germany). Utilization of caecal digesta by caecotrophy (soft-faeces ingestion) in the rabbit. NH 3.4 BjSrnhag, G. (Sweden). Separation and retrograde transport in the large intestine of herbivores. NH 3.5 Johansson, K. (Sweden). Digestion experiment with a pelleted feed mixture and straw to adult horses. NH 3.8 Jurkovi~, J. (Yugoslavia). About Bl°avitaminosis in horses.
JOINT SESSION: ANIMAL MANAGEMENT AND HEALTH/HORSE PRODUCTION
V. Ethological problems in horse management MH 5.1 Keiper, R.R. and Houpt, K.A. (U.S.A.). Dominance hierarchies in feral and domestic horses. MH 5.2 Blendinger, W. (Federal Republic of Germany). Ethology and psychology as antithesis and synthesis shown by the behaviour of horses. MH 5.3 Kiley-Worthington, M. (United Kingdom). The behaviour of horses in relation to management and training. MH 5.4 Schnitzer, U. and Kolter, L. (Federal Republic of Germany). Effects of social behaviour of horses on stable construction. MH 5.5 Kurtz, A. (Switzerland). Horse-handling in a loose housing system. MH 5.6 Prinz yon Bayern, R. (Federal Republic of Germany). Horse management and handling of a family-group in a small space. MH 5.7 Williams, M. (United Kingdom). Laterality of perception in horses. MH 5.8 Volf, J. (Czechoslovakia). On the reproductive biology of Przewalski horses in captivity. MH 5.9 Tschanz, B. and K~immer, P. (Switzerland). Reproductive behaviour in natural and artificial herds of Camargue horses.
173 COMMISSION ON ANIMAL GENETICS
I. Selection and antagonistic traits G 1.1 Pirchner, F. (Federal Republic of Germany). Experience with and prospects of antagonistic selection. G 1.3 Hanset, R. (Belgium). Selection problems when antagonistic effects exist between production characteristics and calving difficulties. G 1.4 Steane, D.E. (United Kingdom). Antagonistic traits in pig breeding. G 1.6 Essl, A. (Austria). Simultaneous selection with fixed culling levels in the case of correlated traits. G 1.8 ~iler, R. and Plocek, F. (Czechoslovakia). Correlated effects of extreme selection on fattening and carcass traits in pigs. G 1.9 Owen, J.B., Brown, K. and Flint, R. (United Kingdom). Selection for prolificacy in sheep in relation to meat production characters. G 1.10 Von Butler, I., Willeke, H. and Pirchner, F. (Federal Republic of Germany). Antagonistic selection for correlated bodyweight traits of mice. G 1.11 HSrstgen, G., Meyer, J.-N., Rapp, K. and Glodek, P. (Federal Republic of Germany). Effect of selection for different quantitative traits upon genetic differentiation among lines of mice. G 1.12 Kownacki, M. and Jezierski, T. (Poland). Effect of selection on some physiological and biochemical traits in mice. G 1.13 Pl'cha, J. and Pfchov~, D. (Czechoslovakia). Correlation among performance, hormonal and some biochemical indices in nine lines of Prestice pig.
IV. The use o f systems analysis in animal production G 4.1 Fewson, D. (Federal Republic of Germany). Systems analysis approach in breeding programs. G 4.2 Christensen, L.G. (Denmark). Direct updating as a method for estimating. G 4.3 Danell, (). (Sweden). Long- and short-term considerations in breeding goals and economic weights. G 4.4 Wilton, J.W. (Canada). Systems analysis approach in management programs. G 4.6 Momm, H. (Federal Republic of Germany). Systems analysis approach to organization of animal breeding. G 4.7 Schneeberger, M., Freeman, A.E. and Berger, P.J. (U.S.A.). Income and risk for dairymen selecting sires for artificial insemination. G 4.9 Steane, D.E. and Guy, D.R. (United Kingdom). The analysis of the use of AI in pig breeding. G 4.10 Owen, J.B. and Williams, G.L. (United Kingdom). The evaluation of group breeding schemes in relation to the structure of the breeding system. G 4.11 Klewiec, J. and Radomska, M.J. (Poland). Comparison of two selection methods for sheep. G 4.12 Guy, D.R. and Steane, D.E. (United Kingdom). The optimisation of group breeding schemes.
V. Open session and business meeting G 5.1 Pirchner, F. (Federal Republic of Germany). Classic vs. desired gain index -- a critique. G 5.2 Williamson, B.G., Kassah, J.Y. and McIver, R.M. (United Kingdom). Non-random, stationary time series o f phenotypic statistics. G 5.4 Zarnecki, A. and Strzalkowski, W. (Poland). Genetic variation between herds of Polish Lowland cattle.
174 G 5.5 Graml, R., Buchberger, J. and Pirchner, F. (Federal Republic of Germany). Theoretical and empirical correlations between relatives for milk protein content. G 5.6 Lazarevid, L., Rom~evid, L. and Katie, M. (Yugoslavia). Introduction of Holstein-Friesian genes into the Black--Pied population. G 5.7 Schmidlin, J. (Switzerland). Genetic parameters for milk and beef traits in a Simmental x Red-Holstein crossbred population. G 5.8 Ptak, E. (Poland). Nonlinear models describing the differences in growth curves of cattle strains. G 5.9 Leuenberger, H. and Kfinzi, N. (Switzerland). Carcass value and meat quality in different beef X dual-purpose breed crosses. G 5.10 Steinwender, R. (Austria). Fattening performance and carcass value of calves and young bulls of Braunvieh X Brown Swiss and Holstein--Friesian -- F I and R, crossings. G 5.11 Schlote, W., H~issig, H., Miinz, M. and Holzer, T. (Federal Republic of Germany). Investigations on the individual and maternal components of calving performance in cattle. G 5.12 Philipsson, J., Thafvelin, B. and Hedebro-Velander, I. (Sweden). Analysis of veterinary-recorded diseases in first-lactation cows. G 5.13 Hoffmann, J.P., Sellier, P. and Ollivier, L. (France). Genetic aspects of splayleg in Large White and Pi~train pig lines and their crosses. G 5.15 Von Lukowicz, M. (Federal Republic of Germany). Problems of early nutrition of carp molt in the hatchery. G 5.16 Kinghorn, B.P. (Norway). The use of oxygen consumption as an indicator of energy assimilation in full-sib groups of Rainbow trout. G 5.17 Stein, H. (Federal Republic of Germany). Conservation of gametes from freshwater fish. G 5.19 Osterhoff, D.R. (Republic of South Africa). Results of twenty years of blood group research in South Africa. G 5.20 F6rster, M. (Federal Republic of Germany). Localisation of the genes for G6PD, HGPRT and PGK in cattle and pigs by means of cattle--mouse- and swine--mousehybrid cells. G 5.22 F~si~s, L. (Hungary). Association between hemoglobin type, trace element status and reproductive performance in Hungarian Merino ewes. G 5.23 Buschmann, H., Meyer, J. and Entringer, G. (Federal Republic of Germany). Studies on the variability and heritability of the mitogenic response of cattle lymphocytes towards plant lectins. G 5.25 Meyer, E.H.H. (Republic of South Africa). A submetacentric Y chromosome and haemoglobin I: unique genetic markers of South African Bos indicus cattle breeds. G 5.26 Brodacki, A., G~uchowski, W. and Niespodziewa/lski, M. (Poland). Relationship of the serum protein fraction (R = 68%) and egg numbers in hens. G 5.27 Major, F. and Tawfik, E.S. (Federal Republic of Germany). Relationship between body weight and alkaline phosphatase activity in blood plasma of mice selected for protein deposition. G 5.28 Wilhelmson, M. (Sweden). Meat production from moose -- possibilities and problems. G 5.29 Atroshi, F., ()sterberg, A. and Lindstr6m, U.B. (Finland). A note on erythrocytereduced glutathione levels and their relationship with weight gain in Finn sheep. VI. Report o f the Working Group on the possible use o f computers in the
teaching o f animal breeding G 6.1 Hocking, P.M. (United Kingdom), Foully, J.L. (France), Petersen, P.H. (Denmark), Schulte-Coerne, H. (Federal Republic of Germany) and Zarnecki, A. (Poland). Computer aids for teaching animal breeding.
175 G 6.2 Schulte-Coerne, H. (Federal Republic of Germany). Experience with computer simulation of a dairy population in teaching animal breeding. COMMISSION ON ANIMAL NUTRITION I a n d II.
Evaluation o f energy systems for ruminants
N 1]2. l a Sutton, J.D. (United Kingdom). Faecal losses and products of digestion in energy evaluation systems for ruminants. N 1/2. l b Just, A. (Denmark). Factors influencing energy losses during metabolism -faecal losses in pigs. N 1/2. l d Thorbek, G. (Denmark). Energy losses in methane. N 1[2. l e MacRae, J.C. and Lobley, G.E. (United Kingdom). Factors influencing energy losses during metabolism -- thermal losses in ruminants. N 1/2. i f Verstegen, M.W.A. (The Netherlands) and Close, W.H. (Federal Republic of Germany). Factors influencing energy losses during metabolism -- thermal losses in non-ruminants. N 1 / 2 . 3 Menke, K.H., Bayer-Eberle, A. and Susenbeth, A. (Federal Republic of Germany). ME requirements of growing cattle of different sexes and breeds. N 1 / 2 . 4 Gundel, J. (Hungary). Effect of carbadox supplementation on performance of barrows, gilts and young boars at different age. N 1]2.5 Cappa, V. and Calamari, L. (Italy). The influence of different energy and protein levels on growth and carcass quality of bulls fed corn silage. N 1 / 2 . 6 Kossila, V., Rissanen, H., Kommeri, M., Heikkil~i, T. and Lampila, M. (Finland). Nutritive value of ammonized straw in the feeding of growing and lactating dairy cattle. N 1/2.7 Foldager, J., Sejrsen, K. and Larsen, J.B. (Denmark). Milk production in heifers reared on ad libitum intake of rations with different energy concentrations. N 1 / 2 . 8 De Brabander, D.L., Aerts, J.V., Moermans, R.J., Ghekiere, P_M. and Buysse, F.X. (Belgium). Comparison of several feed evaluation systems for dairy cows, based on results of feed intake trials. N 1 / 2 . 9 Boucqu~, Ch.V., Fiems, L.O., Moermans, R.J., Cottyn, B.G. and Buysse, F.X. (Belgium). Applicability of different energy systems for fattening to predict liveweight gain of bulls. N 1/2. 10 Rus, V. and Burlacu, G. (Romania). The efficiency of the utilization of diets with different energy concentrations in young growing and fattening cattle. N 1 / 2 . 1 1 Burlacu, G. (Romania). A new system for feed evaluation in ruminants. N 1 / 2 . 1 2 Szentmih~lyi, S., V~rhegyi, I. and V~rhegyi, J. (Hungary). Comparison of feed-energy systems of heifers fed different energy levels.
V. Chemical analysis for the prediction o f nutritive value N 5.1 Alderman, G. (United Kingdom). Methods of feed analysis and their application to ruminant husbandry. N 5.2 Jarrige, R. (France). Chemical methods for predicting the energy and protein value of forages. N 5.3 Sauvant, D. (France). Prediction of the nutritive value of concentrates. N 5.4 Van Es, A.J.H. and Van der Meer, J.M. (The Netherlands). Precirculated discussion notes and survey of the discussion of the CEC Workshop on Methodology of Analysis of Feedingstuffs for Ruminants. N 5.5 J~rgensen, H. (Denmark). The value of soluble carbohydrate for the prediction of metabolizable energy in pigs. N 5.7 Raab, L., Steingass, H. and Menke, K.H. (Federal Republic of Germany). A new in vitro technique for the estimation of digestibility and the ME content of roughages and concentrates for ruminants.
176 N 5.8 Aerts, J.V., De Brabander, D.L., Moermans, R.J., Cottyn, B.G. and Buysse, F.X. (Belgium). Prediction of nutritive value of grass hay, grass silage and maize silage. N 5.9 Giger, S., Sauvant, D., Hervieu, J. and Dorleans, M. (France). Comparison of various methods of prediction of diet digestibility. N 5.10 Sauvant, D. and Giger, S. (France). Variations of the cell-wall components of compound feed having the same nutritive value. VI.
Original communications
N 6.2 Zeremski, D., Milo~evi6, M. and Popovi6, N. (Yugoslavia). Effect of roughage to concentrate ratio in the diet on milk production responses of dairy cows in early, mid and late lactation. N 6.3 Pavli~evid, A., Zeremski, D., Bekri~, V. and Negovanovi6, D. (Yugoslavia). High oil maize in the diet for calves. N 6.4 Koljajid, V. and Zeremski, D. (Yugoslavia). The influence of methods of conservation and physical form of maize grain on the performance of fattening young cattle. N 6.5 Daenicke, L., Rohr, K. and Oslage, H.J. (Federal Republic of Germany). Effect of monensin on rumen fermentation, performance and body composition of growing bulls. N 6.6 Pallauf, J., Brune, H. and G6ttert, W. (Federal Republic of Germany). The effects of fumaric acid and citric acid as feed additives on early-weaned piglets. N 6.9 Thomke, S., Rundgren, M. and Hesselman, K. (Sweden). The effect of feeding highviscosity barley to pigs. N 6.10 Richter, W.I.F., Gross, F. and Beck, T.H. (Federal Republic of Germany). Highmoisture hay treated with ammonia. N. 6.11 Leitgeb, R. and Lettner, F. (Austria). Influence of the pH-value in the rumen on the protein content in the digestive tract of bulls. N. 6.13 Sziics, E., Kemenes, M. and SzSllSsi, I. (Hungary). Dry matter, acetic acid, and ethanol in maize silage as factors affecting eating behaviour of young fattening bulls. N 6.14 Korniewicz, A. (Poland). Different levels of beet slices in complete mixtures for pigs. N 6.15 Wawrzyficzak, S. and Cies'lar, P. (Poland). The effect of using krill meal containing concentrates in feeding calves on the fattening performance and carcass quality of bulls. N 6.16 Zywczok, H. (Poland). The effect of feeding green forages and hay from pasture fertilized at the rate of 100, 300 and 500 kg N/ha on yield, composition and some characteristics of milk. N 6.17 Antongiovanni, M. and Giorgetti, A. (Italy). Nutritive value of alkali-treated wheat straw integrated with urea or molasses protein concentrate. N 6.18 Herold, I., Szab6, P., B4ri, B., J~vor, A., Csernus, I., Kov~its, K., Koch, Gy. and Ilosvay, A. (Hungary). The effect of a bentonite supplement of the feedstuff on the production of swines and on their feed utilization. N 6.19 Falkowski, J. (Poland). A field-bean--whey preparation as an ingredient of milkreplacing mixtures for early-weaned piglets. N 6.20 Pejid, N. (Yugoslavia), Kay, M. (United Kingdom) and Jovanovid, R. (Yugoslavia). Growth, digestibility, nitrogen-retention and flow of nutrients by calves fed milkreplacers containing soyabean proteins. COMMISSION ON ANIMAL MANAGEMENT AND HEALTH
I. Current and future implications o f international legislation and other directives in health, welfare and production M 1.1 Adler, H.C. (Denmark). European conventions for protection of farm animals.
177 M 1.3 Grommers, F.J. (The Netherlands). Evaluation procedure for the assessment of acceptability of systems and methods to which animals are submitted. M 1.4 Brown, Ph.L. (United Kingdom). Welfare aspects. M 1.5 Hinrichs, P. (Federal Republic of Germany). Effects of the Animal Welfare Act and the Environmental Protection Act on the regional competitive power of animal production enterprises. M 1.6 SchSn, H. and Hammer, W. (Federal Republic of Germany). Possible effects of animal welfare measured on animal production systems. II. External environmental factors to be considered in health control and operation of intensive production systems M 2.1 Andreae, U., Unshelm, J., Pougin, M. and Smidt, D. (Federal Republic of Germany). Ethological and physiological criteria for assessing the adaptation of young cattle to slatted floors. M 2.2 Unshelm, J., Andreae, U. and Smidt, U. (Federal Republic of Germany). Biological measures for assessing management conditions of fattening bulls. M 2.3 Pichler, O. (Federal Republic of Germany). Some environmental effects on the incidence of infectious mastitis in dairy cows. M 2.4 Rabold, K. and Harr, M. (Federal Republic of Germany). Studies of the effect of repeated disturbances of vacuum regulation on health criteria of the udder. M 2.5 Grimm, H. (Federal Republic of Germany). Behaviour of cows fed concentrates in the Transponder system and milked ever again in the feeding station. M 2.6 Oosterlee, C.C., Van Dijk, J.H.C., Metz, J.H.M. and De Wilt, J.G. (The Netherlands). Influence of housing systems on the immune response of sows, colostral transfer of antibodies and behaviour of piglets. M 2.7 Schubert, U. and Ernst, E. (Federal Republic of Germany). Management systems and health of milking cows. M 2.8 Blom, J.Y. (Denmark). The influence of housing on traumatic injuries, subsequent disease and culling in dairy herds. M 2.9 Kov~cs, F. and Rafai, P. (Hungary). Influence of environmental factors on resistance to disease in young animals. M 2.10 Blendl, H.M. and Kalich, J. (Federal Republic of Germany). Ultraviolet irradiation in intensive pig production. M 2.11 Owen, J.B. (United Kingdom). Influence of environmental factors on intensive sheep production. M 2.12 Sambraus, H.H. (Federal Republic of Germany). Social behaviour of sows kept in groups. III. The use o f growth-promoting implants and feed additives; effects on productivity and human health considerations M 3.1 Heitzmann, R.J. (United Kingdom). Growth promoting implants with reference to residue studies and field use. M 3.2 Best, J.M.J. and McBeath, D.G. (United Kingdom). Implants of trenbolone acetate and oestradiol for growth promotion in cattle. M 3.4 Frahm, K., Claus, R. and KSgel, S. (Federal Republic of Germany). Possibilities of growth promotion of bulls using unilateral orchidectomy and histological findings in the remaining gonad. M 3.5 Mussa, P.P. and Sarra, C. (Italy). Effects of monensin sodium on the growth of fattening calves and on the fatty acid composition of certain carcass tissues. M 3.6 Davey, L.A. (United Kingdom). The rational use of feed additives in animal production.
178 M 3.7 Willemart, J.P. (France). The anabolic association zeranol (Z) + trenbolone acetate (TBA). Effect on N-retention and growth. M 3.8 Gropp, J. and Schulz, V. (Federal Republic of Germany). Study on the relay toxicity of estradiol-17~ and trenbolone acetate. M 3.9 Brown, R.G. (U.S.A.). The role of zeranol in beef cattle management. M 3.10 Ross, D.B. (United Kingdom). Human health considerations with the use of trenbolone acetate, with or without oestradiol, as a growth promotor in cattle. IV. Recent advances in techniques for oestrus detection in farm animals M 4.1 Schilling, E. and Smidt, D. (Federal Republic of Germany). Techniques for the diagnosis of oestrus in domestic animals. M 4.2 Esslemont, R.J. (United Kingdom). Recent advances in techniques of oestrus detection in cattle. M 4.3 Paul, W. and Schli~nsen, D. (Federal Republic of Germany). Use of automatic recording of milk temperature related to oestrus. M 4.4 Booth, J.M. (United Kingdom). Use of milk progesterone assay. M 4.5 Harker, D.B. (United Kingdom). The use of paints for oestrus detection in cattle. M 4.6 Hemsworth, P.H. (Australia), Hoogerbrugge, A. and Salden, N.T.C.J. (The Netherlands). Oestrus stimulation in sows after weaning of piglets. M 4.7 Schumm, H.R., Bostedt, H., Matzke, P., Bogner, H., Averdunk, G. and Berner, H. (Federal Republic of Germany). Reproduction traits following hormonal-induced oestrus during lactation in sows. M 4.8 Leidl, W., Braun, U. and Blachetta, W. (Federal Republic of Germany). Telemetric measurements of electric resistance of the vaginal mucus as an aid for heat detection in cattle. M 4.9 Aizinbud, E., Schindler, H. and Adam, L. (Israel). Impedometry of the bovine vagine for oestrus detection; present state of research and prospects. M 4.10 Darroch, R.A. (United Kingdom). Increased oestrus detection rates through improved on-farm skills. COMMISSION ON CATTLE PRODUCTION
I. Milk recording and herd management c 1.1 Craven, J.A. and Warren, M.E. (United Kingdom). Economic interpretation of management information derived from milk records. C 1.2 Herland, P.J. (Sweden). Milk records for feeding management. C 1.3 Wismans, W.M.G. (The Netherlands). Utilization of milk records for selection work in the herd. C 1.4 Pabst, K. and Gravert, H.O. (Federal Republic of Germany). Testing of milk composition in milk recording. C 1.6 Champy, R. (France). Use of milk records for control of the reproduction of the herd : the fecundity balance. C. 1.7 Blau, G. (Federal Republic of Germany). Importance of return/cost factors for the rentability in dairy cattle keeping. C 1.8 Kuipers, A. (The Netherlands) and Shook, G.E. (U.S.A.). Development of an economic cow-culling index and comparison with traditional ranking methods. C 1.9 Thamling, C.-H. (Federal Republic of Germany). How is the performance of individual animals to be judged under milk performance tests by means of the value of exploitation?
179 I I I . Performance testing of beef and dual-purpose bulls in AI C 3.1 Bech Andersen, B. (Denmark), de Baerdemaeker, A. (Belgium), Bittante, G. (Italy), Bonaiti, B., Colleau, J.J. (France), Fimland, E. (Norway), Jansen, J. (The Netherlands), Lewis, W.H.E. (United Kingdom), Politiek, R.D. (The Netherlands), Seeland, G. (German Democratic Republic), Teehan, R.J. (Ireland) and Werkmeister, F. (Federal Republic of Germany). Performance testing of bulls in AI. Report on an EEC/EAAP Working Group. C 3.2 Cuthbertson, A. (United Kingdom), Bech Andersen, B. (Denmark) and Miles, C.A. (United Kingdom). Progress report on a study of ultrasonic techniques for the description of beef carcass characteristics. C 3.3 Busk, H. (Denmark). A new technique for measuring b o d y composition on live animals. C 3.4 Almlid, T. (Norway). The possibilities of including constitutional traits into performance tests of bulls. C 3.6 Averdunk, G., Alps, H., Gottschalk, A. and Fusseder, J. (Federal Republic of Germany). Relationship between sire performance test results and the results of the progeny test for fattening and carcass merit. C 3.7 Raschel, H., Walz, J. and Schneider, P. (Federal Republic of Germany). Possibilities for evaluating the claw of test bulls and for using claw parameters for selection. C 3.8 Wenzler, H., Haussmann, H. and Schlote, W. (Federal Republic of Germany). BLUPevaluation of performance-tested young bulls. C 3.9 Jongeling, C., Goudschaal, H. and Langholz, H.-J. (Federal Republic of Germany). Performance testing of Friesian bulls for growth rate with special reference to shortperiod testing. C 3.11 Bonaiti, B. and B~ranger, C. (France). Some considerations on performance testing of beef cattle in France. IV. Long Range Study on future developments in European cattle production c 4.1 Van Dijk, G. (The Netherlands). Future developments in production, consumption, trade and policies for the animal production industries. C 4.3 Jasiorowski, H.A. (Poland). Developments in the cattle production sectors in Eastern Europe. C 4.4 Politiek, R.D. (The Netherlands). Long Range Study on future developments in European animal production. A progress report. C 4.5 Langholz, H.-J. (Federal Republic of Germany). Outline for studies in cattle production.
V. Short papers C 5.1 Pfau, A.A. (Federal Republic of Germany) and Shebaita, M.K. (Egypt). Studies on bodywater in bulls under heat stress. C 5.4 Khalil, H. and Pirchner, F. (Federal Republic of Germany). Genetic parameter estimates for feed efficiency in cattle. C 5.5 Dommerholt, J. (The Netherlands). Deviation from or percentage o f herd yield in breeding-value estimation for dairy traits. C 5.6 Meijering, A. (The Netherlands). Predictability of levels of calving difficulties and stillbirths in heifers from calving data from older cows. C 5.7 Brzozowski, A. (Poland). Behaviour of cows in industrial farms of various technologies. C 5.8 Juszczak, J., Dziadek, B., Krempa, T. and Szulc, T. (Poland). Interdependences between milk characteristics and their use for estimation of cows' yield on the basis of incomplete milk-testing. C 5.9 Juszczak, J., Dobicki, A., Hibner, A., Szulc, T., Szyszkowski, L., Ziemifiski, R., Zuk, B. and Romer, J. (Poland). The genetic aspects of evaluation of sires on the basis of their progeny being fattened outside the testing stations, in fattening houses.
180 C 5.10 Dymnicki, E., Jasiorowski, H., Grabiwski, R. and Wojtulewicz, B. (Poland). Breeding value of daughters from individual matings: sire dam x sire bull. C 5.11 Graf, F. and Tenhumberg, H. (Federal Republic of Germany). Genetic influences on the values of metabolites and enzymes in the blood of dairy cows. C 5.12 Kruff, B., Brem, G. and Lampeter, W.W. (Federal Republic of Germany). Economic and breeding aspects of embryo transfer in heifers. C 5.14 Erhardt, G. and Senft, B. (Federal Republic of Germany). Interaction between lactoferrin and citrate, and its relation to the health of the mammary gland. C 5.16 Trela, J., Dorynek, Z., Trela, E. and Rychlik, T. (Poland). Influences in a limited number of bull sires of immunogenetic changes in cattle. C 5.17 Alifakiotis, T. and Kiriafinis, B. (Greece). Breeding cows at a pre-determined time by using an intravaginal silastic coil impregnated with progesterone with or without PMSG and prostaglandin F:a. C 5.18 Nagy, N. (Hungary). Results and methods of progeny-testing of cattle in Hungary. C 5.19 Huth, F.-W. and Schutzbar, W. (Federal Republic of Germany). Changes of carcass composition in young fattening bulls dependent on feeding intensity and age of the animals respectively. C 5.20 Drozdz, A.A. (Poland). Hoof box traits of 10 groups of crossbred Friesian cattle. C 5.21 Hill, R.E. (United Kingdom). The value of pyrethrum marc as a feed for three species of East African ruminants. C 5.22 Shook, G.E. and Ali, A.K.A. (U.S.A.). Heritability and repeatability of somatic cell concentration in herds on production testing. VI. S h o r t papers and business m e e t i n g C 6.1 Alps, H., Matzke, P. and Averdunk, G. (Federal Republic of Germany). Estimation of meat and bone content in the carcass using carcass measurement in progeny test stations. C 6.2 M~ihl, H. and Langholz, H.-J. (Federal Republic of Germany). Commercial crossbreeding at German Friesians with large-sized Italian sire breeds. C 6.3 Pirchner, F. and El-Hakim, A. (Federal Republic of Germany). Prediction of carcass value from live measurements. C 6.5 Dobicki, A., Juszczak, J., Romer, J., Szulc, T., Tomaszewski, A. and Ziemifiski, R. (Poland). Fattening and slaughter value of crossbreds from Red and White cows with Charolais, Simental, Piemontese and Chianina bulls in half-intensive and intensive fattening. C 6.6 Stefler, J. (Hungary). Increase of calf crop in Hungarian Fleckvieh by pre-utilization. C 6.8 Urban, F. and Dvo]~a'~ek,M. (Czechoslovakia). Perspective types of cattle for the intensive large-scale production conditions. COMMISSION ON SHEEP AND GOAT PRODUCTION
I. Quality in lamb and kid carcasses S 1.1 Sch6n, I. and Sch6n, L. (Federal Republic of Germany). Quality in lamb carcasses. S 1.2 Kempster, A.J. (United Kingdom). Evaluation in lamb carcass composition in breeding schemes, population studies and experiments. S 1.3 Morand-Fehr, P., Sauvant, D., Hervieu, J. and Bas, P. (France). Kid carcass quality: technical and commercial aspects. S 1.4 ~umlivski, B. (Czechoslovakia). Effect of nutrition intensity on the size and quality of lamb carcasses -- Mutton Merino sibs. S 1.5 Zezza, L., Muscio, A., Celi, R., Marsico, G. and Centoducati, P. (Italy). On the carcass quality in sheep as affected by genetic type and age at slaughter. S 1.6 Burgkart, M. and Schwinghammer, A. (Federal Republic of Germany). Carcass quality of lambs from different crosses.
181
s 1.7 Finger, K.H., Wassmuth, R. and Beuing, R. (Federal Republic of Germany). Investigations on fat quality in purebred and crossbred lambs. S 1.8 Thorsteinsson, S.S. and BjSrnsson, H. (Iceland). Estimates of genetic parameters for carcass quality traits, live weight and carcass weight of twin ram lambs. S 1.10 Croston, D. and Kempster, A.J. (United Kingdom). The relevance of carcass evaluation to the future of the Texel sheep in Great Britain. S. 1.11 Arnason, Th. (Sweden) and Thorsteinsson, S.S. (Iceland). Analysis of the principal components of carcass traits of twin ram lambs and construction of a selection index. (An application of the bending procedure.) S 1.12 Bas, P., Morand-Fehr, P., Van Quackebeke, E. and Cazes, J.P. (France). Study on the soft aspects of subcutaneous fats of some lamb carcasses. S 1.13 Andersson, O. and Hansson, I. (Sweden). Swedish lamb carcass classification. III. The influence of prenatal development and postnatal environment on suckling behaviour and survival o f the neonate S 3.1 Robinson, J.J. (United Kingdom). Prenatal growth and development in the sheep and its implications for the viability of the newborn lamb. S 3.2 Jatsch, O., Flach, D. and Wassmuth, R., (Federal Republic of Germany). Changes in free fatty acid and glucose concentrations in the blood of newborn lambs. S 3.3 Flach, D., Jatsch, O. and Wassmuth, R. (Federal Republic of Germany). Pulse frequencies and body temperatures of newborn lambs and their relationship to survival. S 3.4 Slee, J. (United Kingdom). Genetic aspects of survival and resistance to cold in newborn lambs. S 3.6 Ojala, I., Tengroth, G. and Nilsson, B. (Sweden). Udder-health of ewes and crosssuckling by lambs. S 3.7 ~umlivski, B. (Czechoslovakia). Comparison of variability of prenatal and postnatal death-losses in Merino lambs. S 3.8 Morand-Fehr, P., Guillimin, P., Toussaint, G. and Hervieu, J. (France). Some data on perinatal mortality in young goats. S 3.9 ~umlivski, B. (Czechoslovakia). Correlation between liveweight and viability of East-Friesian lambs at birth and their prenatal and postnatal mortality. S 3.10 Jankowski, S. and Przerwa-Tetmajer, W. (Poland). Ease of care, survival rate and growth of lambs born and reared in two extremely different environments. S 3.12 Lawlor, M.J. (Ireland). The effects of perinatal undernutrition of ewes on lamb mortality, ewe milk yields and tailendness in lambs. S 3.13 Herold, I., J~vor, A., Csernus, I., Kov~ts, K. and K~llai, M. (Hungary). Data to the question of artificial rearing of lambs.
V. Open papers S 5.1 D:~rmundsson, O.R. (Iceland). Out-of-season breeding in Icelandic sheep. S 5.2 Glahn-Luft, B. and Wassmuth, R. (Federal Republic of Germany). The influence of the 1/20-translocation in sheep on the efficiency of reproduction. S 5.3 Sengonca, M. (Turkey). An adaptation experiment with the German White Goat (Edelziege) in the Ege region of Turkey. S 5.4 ~au§evi6, Z. (Yugoslavia). The influence of acclimatization on some wool qualities of the Merinolandsehaf breed in Bosnia. S 5.5 Celi, R., Montemurro, O., Martemucci, G., Museio, A., Zezza, L. and De Santis, A. (Italy). The influence of shearing on the total bodywater and its turnover in Altamurana sheep. S 5.6 Kessler, J., Wanner, M. and Pfister, K. (Switzerland). Blood values of young and adult goats.
182 S 5.7 Trimarchi, G., Rossi, G., Secchiari, P. and Ferruzzi, G. (Italy). Intake of corn silage and production response in dairy sheep. S 5.8 Ga~l, M. (Hungary). Rearing early-weaned Hungarian Fine-Wool Merino lambs on milk-replacer and lamb-starter. S 5.9 Manfredini, M., Cavani, C. and Lenzi, P. (Italy). Distillery effluents as animal feed : the use of condensed carob stillage (CCS) in lambs' feeding. S 5.10 Vazhapilly, P., Bertoni, G. and Thuruthumaly, T. (Italy). Partial substitution of NaOH by NH 3 in the treatment of wheat straw : effects on growing lambs. S 5.11 Finger, K.H., Schmid, D.O., Jatsch, O., Sabo, I. and Flach, E. (Federal Republic of Germany). Investigation on the accuracy of pedigree information in breeding flocks. S 5.12 Trimarchi, G., Rossi, G., Secchiari, P. and Ferruzzi, G. (Italy). Suitability of different types of sheep-feeding cribs. S 5.14 Alvarez, P.J., Ovejero, F.J., Guada, J.A. and Gonz~les, J.S. (Spain). Prediction of the energy value of ewes' milk. S 5.15 Peters, K.J. (Federal Republic of Germany). Investigations on the socio-economic position of goats in low-income economic units in the humid tropics of Malaysia. S 5.18 Pappas, V. and Zervas, N. (Greece). Comparison of three methods of synchronization of ovulation in ewes during the breeding season. S 5.19 Alifakiotis, T., Katanos, I., Hatjiminaoglou, I. and Zervas, N. (Greece). Lactation in dairy ewes induced by short-term hormonal treatments. S 5.22 ZaTuska, K., Heller, K. and Bernacki, Z. (Poland). Correlations between the degree of relation in flocks of Polish Merino and the production traits of their offspring. COMMISSION ON PIG PRODUCTION
I. The physiology o f genetic change in pigs P 1.1 Herbst, K. (Federal Republic of Germany). Development, state and perspectives of pig production in the Federal Republic of Germany. P 1.2 Lister, D., Wood, J.D. and Perry, B.N. (United Kingdom). Concepts of physiology which are relevant to pig breeding. P 1.5 Standal, N. (Norway). Hormonal responses in pigs selected for different traits. P 1.7 Unshelm, J. (Federal Republic of Germany). Physiological defects in pigs resulting from selection. P 1.8 Land, R.B. (United Kingdom). Physiological criteria and genetic selection. II. P P P P P P P P P P P
Improving sow fertility
2.1 Smith, D.H. (United Kingdom). The financial implications of sow productivity. 2.2 Wrathall, A.E. (United Kingdom). Reproductive failure mechanisms in pigs. 2.3 O'Grady, J.F. (Ireland). Nutritional influences on fertility in sows. 2.4 Te Brake, J.H.A. (The Netherlands). Management and environment in relation to fertility in the female pig. 2.5 Johansson, K. (Sweden). Some notes concerning the genetic possibilities for improving sow fertility. 2.6 Legault, C. (France). Genetics and reproduction in pigs. 2.7 Danielsen, V. (Denmark). The effect of weaning age on reproductive performance in the pig. 2.8 Van der Heyde, H. and Lievens, R. (Belgium). Litter size following early weaning. Evolution 1970--1978 in a herd of 150 sows. 2.9 Milojid, M. (Yugoslavia). Improvement of sow fertility based on different crossing systems. 2.10 Stur, I. (Austria). Influence of the boar on number of piglets and gestation length. 2.11 Fiedler, J. (Czechoslovakia). Analysis of reproduction traits under large-scale conditions of pig breeding.
183
IV. (a) The use of bulk feeds for pig feeding
(b ) Long Range Study on future developments in European pig production P 4.1 Livingstone, R.M. (United Kingdom). The digestion of succulent feeds b y pigs. P 4.2 Hanrahan, T.J. (Ireland). Problems associated with feeding whey and delactosed whey to pigs. P 4.3 Fevrier, C. (Switzerland). Physiological limits to the use of bulky feeds: dairy byproducts and maize silage. P 4.4 Zoiopoulos, P.E. (Greece), English, P.R. and Topps, J.H. (United Kingdom). Preliminary studies on feeding the breeding gilt to appetite on a fibrous diet. P 4.5 Wenk, C., Pfirter, H.P., Halter, H.M., Stoll, P. and Messikommer, R. (Switzerland). Nutritional value of maize plants and of differently preserved maize cobs for fattening ni~s. P 4.6 Bodart, C., Thielemans, M.F. and Vandenbyvang, P. (Belgium). Incorporation of fibrous feeds in the ration of the growing/finishing pig. P 4.7 Aumaitre, A. (France). Long-Range Study on the future of pig production in Europe; preliminary reflections.
V and VI. Free communications and business meeting P 5 / 6 . 1 Le Denmat, M., Runavot, J.P. and Albar, J. (France). Results of an investigation on breeding boars' characteristics in a sample of 293 commercial herds. P 5 / 6 . 2 Naveau, J. and Fleho, J.Y. (France). Heritability of performance controlled on a specific farm; choice of a growth trait. P 5 / 6 . 3 Bohnenkemper, O. and Glodek, P. (Federal Republic of Germany). Effects of varying sampling in parental populations on comparisons of their progeny groups. P 5 / 6 . 5 M6sz~ros, Z. and Radnai, I. (Hungary). Negative correlations among production traits of purebred and hybrid swine populations. P 5 / 6 . 6 Kov~ics, J. (Hungary). Effects of paternal heredity of sows on their fertility. P 5 / 6 . 7 Sredkovi6, A., Nikolid, M., Brundza, V. and Uremovi6, M. (Yugoslavia). The effect of crossbreeding different breeds of pigs on increasing the meat yield in fatteners. P 5 / 6 . 1 0 Pavl~k, J. and ~iler, R. (Czechoslovakia). Application of the least-squares method for the expression of the heterosis effect in the pig. P 5 / 6 . 1 1 Majer~iak, P. (Czechoslovakia). Reproductive and meat performance of different kinds o f pigs in a hybridisation programme. P 5 / 6 . 1 2 Brascamp, E.W. and Buiting, G.A.J. (The Netherlands). Preliminary results of Duroc as maternal grandsire of fattening pigs. P 5 / 6 . 1 3 Ehrensv~rd, U., Berschauer, F., Gaus, G. and Menke, K.H. (Federal Republic of Germany). Insulin and glucose concentrations in Pi6train, German Landrace and German Edelschwein breeds of pigs. P 5 / 6 . 1 4 Berschauer, F., Gaus, G., Ehrensv~ird, U. and Menke, K.H. (Federal Republic of Germany). Protein and energy utilization and blood urea concentration in Pi6train, German Landrace and German Edelschwein breeds of pigs. P 5 / 6 . 1 5 Wiseman, J., Cole, D.J.A. and Lewis, D. (United Kingdom). Determination and prediction of the DE and ME contents of cereals for pigs. P 5 / 6 . 1 6 Hyldgaard-Jensen, J., J~brgensen, P.F. and Wegger, I. (Denmark). Nutrition and immune response in pigs. P 5 / 6 . 1 7 Madsen, A., Elling, F., Hald, B. and Mortensen, H.P. (Denmark). Ochratoxincontaminated barley for bacon pigs. P 5 / 6 . 1 8 Rogdakis, E., Ensinger, U. and Von Faber, H. (Federal Republic of Germany). Hormone levels in relation to the halothane reaction of pigs. P 5 / 6 . 1 9 Dzapo, V. (Federal Republic of Germany). Status of the mitochondrial energy metabolism in pigs with different halothane sensitivity, and pale colour of meat.
184 P 5 / 6 . 2 0 Finger, K.W., Dzapo, V. and Wassmuth, R. (Federal Republic of Germany). Changes in muscle fibre structure in relation to pale colour and vitality of meat. P 5 / 6 . 2 1 Henning, M. and Kallweit, E. (Federal Republic of Germany). The influence of CO: in the narcotic system on the halothane reaction. P 5 / 6 . 2 2 Webb, A.J. (United Kingdom). The effect of age on the expression of the halothane gene in pigs. P 5 / 6 . 2 3 Michos, G., Matsoukas, I. and Alifakiotis, T. (Greece). Maintenance of pregnancy with exogenous hormones in prepuberal gilts. P 5 / 6 . 2 4 Alifakiotis, T., Matsoukas, I., Gavrilidis, G. and Matzaris, E. (Greece). Hormonal induction of breeding in the lactating sow. P 5 / 6 . 2 5 Schneider, A., Schmidlin, J. and Gerwig, C. (Switzerland). Investigation of reproductive performances of purebred and crossbred sows from a pig production organization. P 5 / 6 . 2 6 PTonka, S. and KapTon, M. (Poland). Reproductive performance of sows in a large-scale swine operation in Poland. P 5 / 6 . 2 7 Seve, B. (France). Age at weaning and development of body components of piglets from 3 to 25 kg liveweight. P 5/6. 28 Werhahn, E., Klobasa, F. (Federal Republic of Germany) and Habe, F. (Yugoslavia). Passive immunization of hand-raised piglets with heterologous immunoglobulins. P 5/6. 29 Valle-Zarate, A. and Rogdakis, E. (Federal Republic of Germany). Population genetic parameter of feed intake in pigs. P 5 / 6 . 3 0 Rothfuss, U. and Rogdakis, E. (Federal Republic of Germany). Metabolic parameters of adipose tissue in Pi4train and Large White pigs. P 5/6.31 Geri, G. and Poli, B.M. (Italy). Some characteristics of intramuscular fat in pigs of 80 and 160 kg liveweight. P 5 / 6 . 3 2 ~iler, R. and Pavllk, J. (Czechoslovakia). Analysis of the growth intensity of Hampshire, Duroc and Belgian Landrace pigs. P 5 / 6 . 3 3 Desmoulin, B. and Pommeret, P. (France). Total or partial dissection of pig carcasses: signification of EEC references. P 5 / 6 . 3 4 Artioli, D. and Chizzolini, R. (Italy). Soft fat in Parma ham. P 5 / 6 . 3 5 Geri, G. and Zappa, A. (Italy). Cellularity of fatty tissue in swine: its evolution for weight classes of 20 kg, from 40 to 200 kg liveweight. P 5 / 6 . 3 6 Blendl, H.M. and Husslein, E. (Federal Republic of Germany). Muscle thickness/ fat quotients and their correlations with carcass value in the pig. P 5 / 6 . 3 8 Andersson, U. (Sweden). A new integrated data-base for pig recording. P 5 / 6 . 3 9 Hughes, P.E. and Kirkwood, R.N. (United Kingdom). Boar-induced precocious puberty in the gilt. P 5 / 6 . 4 0 Waterworth, D.G., Heath, M.E. and Robinson, M. (United Kingdom). The inclusion of "pruteen" in the diet of fattening pigs. P 5 / 6 . 4 1 Thielemans, M.F. and Bodart, Ch. (Belgium). Effect of monensin on the performance of finishing swine. COMMISSION ON HORSE PRODUCTION
I. Performance testing and breeding planning H 1.1 Langlois, B. (France). Efficiency and precision of the selection index for sport horses in France. H 1.2 Bruns, E. (Federal Republic of Germany). Estimation of breeding value of stallions on the basis of tournament performance of their offspring. H 1.3 Thafvelin, B., Philipsson, J. and Darenius, A. (Sweden). Genetic studies on ridinghorse traits under field conditions. H 1.4 Sasimowski, E. and Pietrzak, S. (Poland). Obstacle-jump competition as a measure of utility of saddle-horses.
185 H 1.50csag, I. (Hungary). Adoption of discriminance analysis in examinations of sport colts. H 1.6 Ojala, M.J. (Finland). Measures of racetrack performance with regard to breeding evaluation of trotters. H 1.7 Katona, (). (Federal Republic of Germany). Index selection in the German trotter. H 1.8 Arnason, T., Darenius, A. and Philipsson, J. (Sweden). Genetic studies on the Swedish trotting-horse. H 1.11 Sasimowski, E., Budzyfiski, M. and Kolstrung, R. (Poland). Purebred Arab horses as winners in classic horse-racing and their utilization in breeding. H 1.12 Telalba~i6, R. and Pajanovi~, R. (Yugoslavia). Present situation in inbreeding as a phase of breeding formation in the modern type of mountain horse. H 1.14 Zaruska, J. and Ciesielski, W. (Poland). Continuation of the "Trakehner" in the stud farm Rzeczna with regard to relationship and inbreeding. H 1.15 Arnason, Th. (Iceland). Genetic studies on the Icelandic Toelter horse. H 1.16 Kiener, A. (Switzerland). Studies for the determination of the specific breeding value of different stallions and broodmares in Swiss warm-blood and heavy horse breeding.
II. Aspects o f diseases in horses H 2.1 Bergsten, G. (Sweden). The durability of the Swedish standardbred riding horse judged from material of insured horses. H 2.4 Magnusson, L.-E. (Sweden). Health control of horses in riding establishments. H 2.5 Graaf, K. and Magnusson, L.-E. (Sweden). Upward fixation and retention of the patella in the horse. H 2.7 Muuss, H. and Meyer, H. (Federal Republic of Germany). Investigations of the passage of intestinal contents from the ileum into the caecum, and intestinal circulation of water and sodium in the horse. H 2.8 Staun, H. (Denmark). Long Range Study on future developments in European horse production; preliminary report:
IV. Free papers H 4.1 Hartwig, W. (Federal Republic of Germany). Organisation of horse breeding in Germany. H 4.3 SchSn, D. (Federal Republic of Germany). Draft-horse breeding in the Federal Republic of Germany. H 4.4 Bormann, P. (Federal Republic of Germany). Horsebreeding in Germany. Thoroughbreds and trotters. H 4.5 Dattilo, M. (Italy). Variations of glucose and lactic acid in the blood-stream before and after the race. H 4.6 Senft, B. and Meyer, F. (Federal Republic of Germany). Modifications in the concentrations of protein fractions in the blood and milk of mares, as well as in the blood of their foals. H 4.7 Budzyhski, M. (Poland). The evaluation of excitability and sedateness of the nervous system of thoroughbreds at the time of their growth and development. H 4.8 Pettonen, T., Kossila, V., Antila, V. and Huida, L. (Finland). Effect of protein supplement on milk composition of the mares and growth rate of their foals. H 4.9 Galizzi Vecchiotti, G. (Italy). Observations on mares' fertility in thoroughbred horses raised in Italy. H 4.10 Minning, E. and Wenniger, J.H. (Federal Republic of Germany). Influences on becoming pregnant and pregnancy duration for Hanoverian broodmares. H 4.12 Ubbenjans, M. (Federal Republic of Germany). Examinations on horse-keeping on artificial ground-coverings.
186
VI. Business meeting and short papers H 6.1 Preuschoft, H. (Federal Republic of Germany). On the quality and magnitude of stresses in the metapodials and phalanges of saddle horses in various gaits. H 6.2 SchSn, D. and SchSn, E. (Federal Republic of Germany). Withers height of twoyear-old colts of German light horse breeds at the date of presentation for licensing and its relation to sire and month of birth. H 6.6 Ki~nzi, A. (Switzerland). Analytical and statistical examinations on Swiss "Freiberger" and warm-blood breeding horses. H 6.7 Stranzinger, G. (Switzerland). Determination of sex chromosomes in horses. H 6.8 Martin-Rosset, W. and Doreau, M. (France). Effect of variations in level of feeding of heavy mares during late pregnancy.
PAPERS PRESENTED IN THE STUDY COMMISSIONS AT THE 31ST A N N U A L M E E T I N G O F T H E E.A.A.P. IN M U N I C H , 1 9 8 0
(The Roman Numerals refer to the number of the session. In addition each paper has a code number. Individual papers may be obtained via the Secretariat General of the E.A.A.P., Corso Trieste 67, 1-00198 Roma, Italy. Readers should note that the abstracts of papers presented in the Commission on Animal Genetics will be published in the "Annales de G~n~tique et de S~lection Animale".) JOINT SESSION: ANIMAL GENETICS/CATTLE PRODUCTION II.
Improvement of fertility in cattle
GC 2.1 Karg, H. (Federal Republic of Germany). Physiological impact on fertility in cattle. GC 2.2 Sreenan, J.M. (Ireland). Biotechnical measures for improvement of fertility in cattle. GC 2.3 Philipsson, J. (Sweden). Genetic aspects of fertility in cattle. GC 2.4 Syrstad, O. (Norway). Selection for fertility on the basis of AI data. GC 2.5 Bar-Anan, R. (Israel). Genetic inferences from the frequency distribution of return intervals in dairy cows. GC 2.6 Piper, L.R., Bindon, B.M. (Australia) and Barlow, R. (Ireland). Selection for twins in beef herds. GC 2.7 Gaillard, C. (Switzerland). Effects of calving difficulty and birth weight of the calf on the subsequent fertility in Simmental cattle. GC 2.8 Drees, B., Claus, J., Bergmann, J., M~ickle, N. and Kalm, E. (Federal Republic of Germany). Comparison of parameters for the evaluation of insemination success. GC 2.9 Schlote, W. and Miinks, J. (Federal Republic of Germany). Population parameters of semen characteristics and non-return rate of test bulls. GC 2.10 Gasteiger, J. and Specker, C. (Federal Republic of Germany). Analysis of fertility data in AI populations. GC 2.13 Zarnecki, A. and Mrowiec, S. (Poland). Preliminary analysis of fertility traits in Polish Lowland cattle. GC 2.14 Berglund, B., Edqvist, L.-E., Jansson, L., Kindahl, H., Larsson, K., Malmqvist, A. and Swensson, C. (Sweden). Reproductive performance of dairy cows from parturition to conception. GC 2.15 Poga~ar, J. (Yugoslavia). Environmental influence on calving interval and selection possibilities. GC 2.16 Kilkenny, J.B. and Allen, D.M. (United Kingdom). Improving fertility in cattle -management aspects. GC 2.17 Kelem~ri, G. and Horn, A. (Hungary). Comparative study on maternal performance of different suckler cow genotypes. GC 2.18 Gravert, H.O. and Pabst, K. (Federal Republic of Germany). Protein content in milk and fertility in cows. GC 2.19 Chavaz, J. and Hagger, Ch. (Switzerland). Effect of herd environment and milk yield on various fertility traits in Swiss Brown cattle. GC 2.20 Hagger, Ch. and Chavaz, J. (Switzerland). Influence of reproductive performance on 305-day lactation records in Swiss Brown cattle.
171
GC 2.21 Pape, H.Ch., Claus, J. and Kalm, E. (Federal Republic of Germany). Genetical analysis of life-time production of dairy cows. GC 2.22 Stolzenburg, U. and SchSnmuth, G. (German Democratic Republic). First results of an experiment for increasing the frequency of twinning in cattle. GC 2.23 Solbu, H. (Norway). Influence of twinning on retained placenta and calving difficulties in Norwegian dairy cattle. GC 2.24 KSgel, S., Strasser, H. and Lampeter, W.W. (Federal Republic of Germany). Twins in a Simmental suckler herd. GC 2.26 F6rster, M. (Federal Republic of Germany). Chromosome aberrations as indicator of cattle fertility. GC 2.27 Lampeter, W.W., Graf, F. and Kruff, B. (Federal Republic of Germany). Experiences with non-surgical transfer of deep-frozen embryos. GC 2.28 Schilling, E., Smidt, D. and Sacher, B. (Federal Republic of Germany). Quality of ova and embryos from superovulating cows. GC 2.29 Voss, H.-J. and Holtz, W. (Federal Republic of Germany). Oestrus synchronization in dairy cows with prostaglandins or gestagens -- a comparative field study. GC 2.30 Schilling, E. and Smidt, D. (Federal Republic of Germany). Oestrus synchronization in heifers with prostaglandins. GC 2.31 Elsaesser, F., Sacher, B., Thielscher, H.H., Unshelm, J. and Smidt, D. (Federal Republic of Germany). Use of milk progesterone measurements in embryo transfer programs. GC 2.32 Zwiauer, D. and Claus, R. (Federal Republic of Germany). Relationship between cow fertility and milk progesterone values. GC 2.33 Drew, B. (United Kingdom). The effect of progesterone treatment on the fertility of dairy cows. JOINT SESSION: ANIMAL GENETICS/PIG PRODUCTION I I I . The effect of monofactorial factors on quantitative traits in pig production GP 3.1 Simon, D.L. (Federal Republic of Germany). Is halothane isusceptibility caused by a single locus, and what other single-locus traits are important in the pig? GP 3.2 Franceschi, P.F. and Ollivier, L. (France). Frequencies of important single genes in pig populations. GP 3.3 Andresen, E. and Jensen, P. (Denmark). Helpful linkage relations between identifiable single-locus traits in the pig, including the Hal-locus. GP 3.4 Brascamp, E.W., Eikelenboom, G. and Minkema, D. (The Netherlands). The effect of a single locus (halothane) on variances of and correlations among quantitative production traits. GP 3.5 Smith, C. and Webb, A.J. (United Kingdom). Effects of major genes on animal breeding strategies. GP 3.6 S6nnichsen, M.L., Claus, J. and Kalm, E. (Federal Republic of Germany). Halothane susceptibility in relation to growth and carcass performance of Pi~train and Belgium Landrace sirelines. GP 3.7 Kov~ch, G. (Hungary). Phenotypic correlations among fattening performances and meat quality o f halothane positive and negative KA--HYB hybrid swine populations. GP 3.8 Guerin, G., Ollivier, L. and Sellier, P. (France). Gene frequencies and linkage disequilibria at the Hal, PHI and 6-PGD loci in some French pig breeds. Preliminary results. GP 3.9 Schneider, A., SchwSrer, D. and Blum, J. (Switzerland). Production and reproduction traits of Swiss Landrace pigs in relation to their genotype for halothane sensitivity. GP 3.10 Edfors-Lilja, I., Petersson, H. and Gahne, B. (Sweden). Adhesion of K88 positive E. coli to the small intestine of Swedish Landrace × Swedish Yorkshire pigs.
172 JOINT SESSION: ANIMAL NUTRITION/SHEEP AND GOAT PRODUCTION IV. Developments in sheep nutrition NS 4.3 Qrskov, E.R. and Robinson, J.J. (United Kingdom). The application of modern concepts of ruminant protein nutrition to sheep production systems. NS 4.4 Visscher, A.H., Garssen, G.J. and Zaalmink, W. (The Netherlands). Relationship between concentrates fed and the copper concentration in liver dry matter in five sheep genotypes. NS 4.5 Cumlivski, B. (Czechoslovakia). Taste and dietary effects of taken dry bulky feeds in Merino breeds. NS 4.6 Sauvant, D., Giger, S. and Morand-Fehr, P. (France). Influence of the carbohydrate composition on the bulkiness of feed compounds.
JOINT SESSION: ANIMAL NUTRITION/HORSE PRODUCTION III. Digestion in the non-ruminant herbivore NH 3.1 Tisserand, J.L. (France). Protein requirements and digestion in the horse. NH 3.2. Meyer, H. (Federal Republic of Germany). Metabolism and requirement of sodium and magnesium in horses. NH 3.3 HSrnicke, H. (Federal Republic of Germany). Utilization of caecal digesta by caecotrophy (soft-faeces ingestion) in the rabbit. NH 3.4 BjSrnhag, G. (Sweden). Separation and retrograde transport in the large intestine of herbivores. NH 3.5 Johansson, K. (Sweden). Digestion experiment with a pelleted feed mixture and straw to adult horses. NH 3.8 Jurkovi~, J. (Yugoslavia). About Bl°avitaminosis in horses.
JOINT SESSION: ANIMAL MANAGEMENT AND HEALTH/HORSE PRODUCTION
V. Ethological problems in horse management MH 5.1 Keiper, R.R. and Houpt, K.A. (U.S.A.). Dominance hierarchies in feral and domestic horses. MH 5.2 Blendinger, W. (Federal Republic of Germany). Ethology and psychology as antithesis and synthesis shown by the behaviour of horses. MH 5.3 Kiley-Worthington, M. (United Kingdom). The behaviour of horses in relation to management and training. MH 5.4 Schnitzer, U. and Kolter, L. (Federal Republic of Germany). Effects of social behaviour of horses on stable construction. MH 5.5 Kurtz, A. (Switzerland). Horse-handling in a loose housing system. MH 5.6 Prinz yon Bayern, R. (Federal Republic of Germany). Horse management and handling of a family-group in a small space. MH 5.7 Williams, M. (United Kingdom). Laterality of perception in horses. MH 5.8 Volf, J. (Czechoslovakia). On the reproductive biology of Przewalski horses in captivity. MH 5.9 Tschanz, B. and K~immer, P. (Switzerland). Reproductive behaviour in natural and artificial herds of Camargue horses.
173 COMMISSION ON ANIMAL GENETICS
I. Selection and antagonistic traits G 1.1 Pirchner, F. (Federal Republic of Germany). Experience with and prospects of antagonistic selection. G 1.3 Hanset, R. (Belgium). Selection problems when antagonistic effects exist between production characteristics and calving difficulties. G 1.4 Steane, D.E. (United Kingdom). Antagonistic traits in pig breeding. G 1.6 Essl, A. (Austria). Simultaneous selection with fixed culling levels in the case of correlated traits. G 1.8 ~iler, R. and Plocek, F. (Czechoslovakia). Correlated effects of extreme selection on fattening and carcass traits in pigs. G 1.9 Owen, J.B., Brown, K. and Flint, R. (United Kingdom). Selection for prolificacy in sheep in relation to meat production characters. G 1.10 Von Butler, I., Willeke, H. and Pirchner, F. (Federal Republic of Germany). Antagonistic selection for correlated bodyweight traits of mice. G 1.11 HSrstgen, G., Meyer, J.-N., Rapp, K. and Glodek, P. (Federal Republic of Germany). Effect of selection for different quantitative traits upon genetic differentiation among lines of mice. G 1.12 Kownacki, M. and Jezierski, T. (Poland). Effect of selection on some physiological and biochemical traits in mice. G 1.13 Pl'cha, J. and Pfchov~, D. (Czechoslovakia). Correlation among performance, hormonal and some biochemical indices in nine lines of Prestice pig.
IV. The use o f systems analysis in animal production G 4.1 Fewson, D. (Federal Republic of Germany). Systems analysis approach in breeding programs. G 4.2 Christensen, L.G. (Denmark). Direct updating as a method for estimating. G 4.3 Danell, (). (Sweden). Long- and short-term considerations in breeding goals and economic weights. G 4.4 Wilton, J.W. (Canada). Systems analysis approach in management programs. G 4.6 Momm, H. (Federal Republic of Germany). Systems analysis approach to organization of animal breeding. G 4.7 Schneeberger, M., Freeman, A.E. and Berger, P.J. (U.S.A.). Income and risk for dairymen selecting sires for artificial insemination. G 4.9 Steane, D.E. and Guy, D.R. (United Kingdom). The analysis of the use of AI in pig breeding. G 4.10 Owen, J.B. and Williams, G.L. (United Kingdom). The evaluation of group breeding schemes in relation to the structure of the breeding system. G 4.11 Klewiec, J. and Radomska, M.J. (Poland). Comparison of two selection methods for sheep. G 4.12 Guy, D.R. and Steane, D.E. (United Kingdom). The optimisation of group breeding schemes.
V. Open session and business meeting G 5.1 Pirchner, F. (Federal Republic of Germany). Classic vs. desired gain index -- a critique. G 5.2 Williamson, B.G., Kassah, J.Y. and McIver, R.M. (United Kingdom). Non-random, stationary time series o f phenotypic statistics. G 5.4 Zarnecki, A. and Strzalkowski, W. (Poland). Genetic variation between herds of Polish Lowland cattle.
174 G 5.5 Graml, R., Buchberger, J. and Pirchner, F. (Federal Republic of Germany). Theoretical and empirical correlations between relatives for milk protein content. G 5.6 Lazarevid, L., Rom~evid, L. and Katie, M. (Yugoslavia). Introduction of Holstein-Friesian genes into the Black--Pied population. G 5.7 Schmidlin, J. (Switzerland). Genetic parameters for milk and beef traits in a Simmental x Red-Holstein crossbred population. G 5.8 Ptak, E. (Poland). Nonlinear models describing the differences in growth curves of cattle strains. G 5.9 Leuenberger, H. and Kfinzi, N. (Switzerland). Carcass value and meat quality in different beef X dual-purpose breed crosses. G 5.10 Steinwender, R. (Austria). Fattening performance and carcass value of calves and young bulls of Braunvieh X Brown Swiss and Holstein--Friesian -- F I and R, crossings. G 5.11 Schlote, W., H~issig, H., Miinz, M. and Holzer, T. (Federal Republic of Germany). Investigations on the individual and maternal components of calving performance in cattle. G 5.12 Philipsson, J., Thafvelin, B. and Hedebro-Velander, I. (Sweden). Analysis of veterinary-recorded diseases in first-lactation cows. G 5.13 Hoffmann, J.P., Sellier, P. and Ollivier, L. (France). Genetic aspects of splayleg in Large White and Pi~train pig lines and their crosses. G 5.15 Von Lukowicz, M. (Federal Republic of Germany). Problems of early nutrition of carp molt in the hatchery. G 5.16 Kinghorn, B.P. (Norway). The use of oxygen consumption as an indicator of energy assimilation in full-sib groups of Rainbow trout. G 5.17 Stein, H. (Federal Republic of Germany). Conservation of gametes from freshwater fish. G 5.19 Osterhoff, D.R. (Republic of South Africa). Results of twenty years of blood group research in South Africa. G 5.20 F6rster, M. (Federal Republic of Germany). Localisation of the genes for G6PD, HGPRT and PGK in cattle and pigs by means of cattle--mouse- and swine--mousehybrid cells. G 5.22 F~si~s, L. (Hungary). Association between hemoglobin type, trace element status and reproductive performance in Hungarian Merino ewes. G 5.23 Buschmann, H., Meyer, J. and Entringer, G. (Federal Republic of Germany). Studies on the variability and heritability of the mitogenic response of cattle lymphocytes towards plant lectins. G 5.25 Meyer, E.H.H. (Republic of South Africa). A submetacentric Y chromosome and haemoglobin I: unique genetic markers of South African Bos indicus cattle breeds. G 5.26 Brodacki, A., G~uchowski, W. and Niespodziewa/lski, M. (Poland). Relationship of the serum protein fraction (R = 68%) and egg numbers in hens. G 5.27 Major, F. and Tawfik, E.S. (Federal Republic of Germany). Relationship between body weight and alkaline phosphatase activity in blood plasma of mice selected for protein deposition. G 5.28 Wilhelmson, M. (Sweden). Meat production from moose -- possibilities and problems. G 5.29 Atroshi, F., ()sterberg, A. and Lindstr6m, U.B. (Finland). A note on erythrocytereduced glutathione levels and their relationship with weight gain in Finn sheep. VI. Report o f the Working Group on the possible use o f computers in the
teaching o f animal breeding G 6.1 Hocking, P.M. (United Kingdom), Foully, J.L. (France), Petersen, P.H. (Denmark), Schulte-Coerne, H. (Federal Republic of Germany) and Zarnecki, A. (Poland). Computer aids for teaching animal breeding.
175 G 6.2 Schulte-Coerne, H. (Federal Republic of Germany). Experience with computer simulation of a dairy population in teaching animal breeding. COMMISSION ON ANIMAL NUTRITION I a n d II.
Evaluation o f energy systems for ruminants
N 1]2. l a Sutton, J.D. (United Kingdom). Faecal losses and products of digestion in energy evaluation systems for ruminants. N 1/2. l b Just, A. (Denmark). Factors influencing energy losses during metabolism -faecal losses in pigs. N 1/2. l d Thorbek, G. (Denmark). Energy losses in methane. N 1[2. l e MacRae, J.C. and Lobley, G.E. (United Kingdom). Factors influencing energy losses during metabolism -- thermal losses in ruminants. N 1/2. i f Verstegen, M.W.A. (The Netherlands) and Close, W.H. (Federal Republic of Germany). Factors influencing energy losses during metabolism -- thermal losses in non-ruminants. N 1 / 2 . 3 Menke, K.H., Bayer-Eberle, A. and Susenbeth, A. (Federal Republic of Germany). ME requirements of growing cattle of different sexes and breeds. N 1 / 2 . 4 Gundel, J. (Hungary). Effect of carbadox supplementation on performance of barrows, gilts and young boars at different age. N 1]2.5 Cappa, V. and Calamari, L. (Italy). The influence of different energy and protein levels on growth and carcass quality of bulls fed corn silage. N 1 / 2 . 6 Kossila, V., Rissanen, H., Kommeri, M., Heikkil~i, T. and Lampila, M. (Finland). Nutritive value of ammonized straw in the feeding of growing and lactating dairy cattle. N 1/2.7 Foldager, J., Sejrsen, K. and Larsen, J.B. (Denmark). Milk production in heifers reared on ad libitum intake of rations with different energy concentrations. N 1 / 2 . 8 De Brabander, D.L., Aerts, J.V., Moermans, R.J., Ghekiere, P_M. and Buysse, F.X. (Belgium). Comparison of several feed evaluation systems for dairy cows, based on results of feed intake trials. N 1 / 2 . 9 Boucqu~, Ch.V., Fiems, L.O., Moermans, R.J., Cottyn, B.G. and Buysse, F.X. (Belgium). Applicability of different energy systems for fattening to predict liveweight gain of bulls. N 1/2. 10 Rus, V. and Burlacu, G. (Romania). The efficiency of the utilization of diets with different energy concentrations in young growing and fattening cattle. N 1 / 2 . 1 1 Burlacu, G. (Romania). A new system for feed evaluation in ruminants. N 1 / 2 . 1 2 Szentmih~lyi, S., V~rhegyi, I. and V~rhegyi, J. (Hungary). Comparison of feed-energy systems of heifers fed different energy levels.
V. Chemical analysis for the prediction o f nutritive value N 5.1 Alderman, G. (United Kingdom). Methods of feed analysis and their application to ruminant husbandry. N 5.2 Jarrige, R. (France). Chemical methods for predicting the energy and protein value of forages. N 5.3 Sauvant, D. (France). Prediction of the nutritive value of concentrates. N 5.4 Van Es, A.J.H. and Van der Meer, J.M. (The Netherlands). Precirculated discussion notes and survey of the discussion of the CEC Workshop on Methodology of Analysis of Feedingstuffs for Ruminants. N 5.5 J~rgensen, H. (Denmark). The value of soluble carbohydrate for the prediction of metabolizable energy in pigs. N 5.7 Raab, L., Steingass, H. and Menke, K.H. (Federal Republic of Germany). A new in vitro technique for the estimation of digestibility and the ME content of roughages and concentrates for ruminants.
176 N 5.8 Aerts, J.V., De Brabander, D.L., Moermans, R.J., Cottyn, B.G. and Buysse, F.X. (Belgium). Prediction of nutritive value of grass hay, grass silage and maize silage. N 5.9 Giger, S., Sauvant, D., Hervieu, J. and Dorleans, M. (France). Comparison of various methods of prediction of diet digestibility. N 5.10 Sauvant, D. and Giger, S. (France). Variations of the cell-wall components of compound feed having the same nutritive value. VI.
Original communications
N 6.2 Zeremski, D., Milo~evi6, M. and Popovi6, N. (Yugoslavia). Effect of roughage to concentrate ratio in the diet on milk production responses of dairy cows in early, mid and late lactation. N 6.3 Pavli~evid, A., Zeremski, D., Bekri~, V. and Negovanovi6, D. (Yugoslavia). High oil maize in the diet for calves. N 6.4 Koljajid, V. and Zeremski, D. (Yugoslavia). The influence of methods of conservation and physical form of maize grain on the performance of fattening young cattle. N 6.5 Daenicke, L., Rohr, K. and Oslage, H.J. (Federal Republic of Germany). Effect of monensin on rumen fermentation, performance and body composition of growing bulls. N 6.6 Pallauf, J., Brune, H. and G6ttert, W. (Federal Republic of Germany). The effects of fumaric acid and citric acid as feed additives on early-weaned piglets. N 6.9 Thomke, S., Rundgren, M. and Hesselman, K. (Sweden). The effect of feeding highviscosity barley to pigs. N 6.10 Richter, W.I.F., Gross, F. and Beck, T.H. (Federal Republic of Germany). Highmoisture hay treated with ammonia. N. 6.11 Leitgeb, R. and Lettner, F. (Austria). Influence of the pH-value in the rumen on the protein content in the digestive tract of bulls. N. 6.13 Sziics, E., Kemenes, M. and SzSllSsi, I. (Hungary). Dry matter, acetic acid, and ethanol in maize silage as factors affecting eating behaviour of young fattening bulls. N 6.14 Korniewicz, A. (Poland). Different levels of beet slices in complete mixtures for pigs. N 6.15 Wawrzyficzak, S. and Cies'lar, P. (Poland). The effect of using krill meal containing concentrates in feeding calves on the fattening performance and carcass quality of bulls. N 6.16 Zywczok, H. (Poland). The effect of feeding green forages and hay from pasture fertilized at the rate of 100, 300 and 500 kg N/ha on yield, composition and some characteristics of milk. N 6.17 Antongiovanni, M. and Giorgetti, A. (Italy). Nutritive value of alkali-treated wheat straw integrated with urea or molasses protein concentrate. N 6.18 Herold, I., Szab6, P., B4ri, B., J~vor, A., Csernus, I., Kov~its, K., Koch, Gy. and Ilosvay, A. (Hungary). The effect of a bentonite supplement of the feedstuff on the production of swines and on their feed utilization. N 6.19 Falkowski, J. (Poland). A field-bean--whey preparation as an ingredient of milkreplacing mixtures for early-weaned piglets. N 6.20 Pejid, N. (Yugoslavia), Kay, M. (United Kingdom) and Jovanovid, R. (Yugoslavia). Growth, digestibility, nitrogen-retention and flow of nutrients by calves fed milkreplacers containing soyabean proteins. COMMISSION ON ANIMAL MANAGEMENT AND HEALTH
I. Current and future implications o f international legislation and other directives in health, welfare and production M 1.1 Adler, H.C. (Denmark). European conventions for protection of farm animals.
177 M 1.3 Grommers, F.J. (The Netherlands). Evaluation procedure for the assessment of acceptability of systems and methods to which animals are submitted. M 1.4 Brown, Ph.L. (United Kingdom). Welfare aspects. M 1.5 Hinrichs, P. (Federal Republic of Germany). Effects of the Animal Welfare Act and the Environmental Protection Act on the regional competitive power of animal production enterprises. M 1.6 SchSn, H. and Hammer, W. (Federal Republic of Germany). Possible effects of animal welfare measured on animal production systems. II. External environmental factors to be considered in health control and operation of intensive production systems M 2.1 Andreae, U., Unshelm, J., Pougin, M. and Smidt, D. (Federal Republic of Germany). Ethological and physiological criteria for assessing the adaptation of young cattle to slatted floors. M 2.2 Unshelm, J., Andreae, U. and Smidt, U. (Federal Republic of Germany). Biological measures for assessing management conditions of fattening bulls. M 2.3 Pichler, O. (Federal Republic of Germany). Some environmental effects on the incidence of infectious mastitis in dairy cows. M 2.4 Rabold, K. and Harr, M. (Federal Republic of Germany). Studies of the effect of repeated disturbances of vacuum regulation on health criteria of the udder. M 2.5 Grimm, H. (Federal Republic of Germany). Behaviour of cows fed concentrates in the Transponder system and milked ever again in the feeding station. M 2.6 Oosterlee, C.C., Van Dijk, J.H.C., Metz, J.H.M. and De Wilt, J.G. (The Netherlands). Influence of housing systems on the immune response of sows, colostral transfer of antibodies and behaviour of piglets. M 2.7 Schubert, U. and Ernst, E. (Federal Republic of Germany). Management systems and health of milking cows. M 2.8 Blom, J.Y. (Denmark). The influence of housing on traumatic injuries, subsequent disease and culling in dairy herds. M 2.9 Kov~cs, F. and Rafai, P. (Hungary). Influence of environmental factors on resistance to disease in young animals. M 2.10 Blendl, H.M. and Kalich, J. (Federal Republic of Germany). Ultraviolet irradiation in intensive pig production. M 2.11 Owen, J.B. (United Kingdom). Influence of environmental factors on intensive sheep production. M 2.12 Sambraus, H.H. (Federal Republic of Germany). Social behaviour of sows kept in groups. III. The use o f growth-promoting implants and feed additives; effects on productivity and human health considerations M 3.1 Heitzmann, R.J. (United Kingdom). Growth promoting implants with reference to residue studies and field use. M 3.2 Best, J.M.J. and McBeath, D.G. (United Kingdom). Implants of trenbolone acetate and oestradiol for growth promotion in cattle. M 3.4 Frahm, K., Claus, R. and KSgel, S. (Federal Republic of Germany). Possibilities of growth promotion of bulls using unilateral orchidectomy and histological findings in the remaining gonad. M 3.5 Mussa, P.P. and Sarra, C. (Italy). Effects of monensin sodium on the growth of fattening calves and on the fatty acid composition of certain carcass tissues. M 3.6 Davey, L.A. (United Kingdom). The rational use of feed additives in animal production.
178 M 3.7 Willemart, J.P. (France). The anabolic association zeranol (Z) + trenbolone acetate (TBA). Effect on N-retention and growth. M 3.8 Gropp, J. and Schulz, V. (Federal Republic of Germany). Study on the relay toxicity of estradiol-17~ and trenbolone acetate. M 3.9 Brown, R.G. (U.S.A.). The role of zeranol in beef cattle management. M 3.10 Ross, D.B. (United Kingdom). Human health considerations with the use of trenbolone acetate, with or without oestradiol, as a growth promotor in cattle. IV. Recent advances in techniques for oestrus detection in farm animals M 4.1 Schilling, E. and Smidt, D. (Federal Republic of Germany). Techniques for the diagnosis of oestrus in domestic animals. M 4.2 Esslemont, R.J. (United Kingdom). Recent advances in techniques of oestrus detection in cattle. M 4.3 Paul, W. and Schli~nsen, D. (Federal Republic of Germany). Use of automatic recording of milk temperature related to oestrus. M 4.4 Booth, J.M. (United Kingdom). Use of milk progesterone assay. M 4.5 Harker, D.B. (United Kingdom). The use of paints for oestrus detection in cattle. M 4.6 Hemsworth, P.H. (Australia), Hoogerbrugge, A. and Salden, N.T.C.J. (The Netherlands). Oestrus stimulation in sows after weaning of piglets. M 4.7 Schumm, H.R., Bostedt, H., Matzke, P., Bogner, H., Averdunk, G. and Berner, H. (Federal Republic of Germany). Reproduction traits following hormonal-induced oestrus during lactation in sows. M 4.8 Leidl, W., Braun, U. and Blachetta, W. (Federal Republic of Germany). Telemetric measurements of electric resistance of the vaginal mucus as an aid for heat detection in cattle. M 4.9 Aizinbud, E., Schindler, H. and Adam, L. (Israel). Impedometry of the bovine vagine for oestrus detection; present state of research and prospects. M 4.10 Darroch, R.A. (United Kingdom). Increased oestrus detection rates through improved on-farm skills. COMMISSION ON CATTLE PRODUCTION
I. Milk recording and herd management c 1.1 Craven, J.A. and Warren, M.E. (United Kingdom). Economic interpretation of management information derived from milk records. C 1.2 Herland, P.J. (Sweden). Milk records for feeding management. C 1.3 Wismans, W.M.G. (The Netherlands). Utilization of milk records for selection work in the herd. C 1.4 Pabst, K. and Gravert, H.O. (Federal Republic of Germany). Testing of milk composition in milk recording. C 1.6 Champy, R. (France). Use of milk records for control of the reproduction of the herd : the fecundity balance. C. 1.7 Blau, G. (Federal Republic of Germany). Importance of return/cost factors for the rentability in dairy cattle keeping. C 1.8 Kuipers, A. (The Netherlands) and Shook, G.E. (U.S.A.). Development of an economic cow-culling index and comparison with traditional ranking methods. C 1.9 Thamling, C.-H. (Federal Republic of Germany). How is the performance of individual animals to be judged under milk performance tests by means of the value of exploitation?
179 I I I . Performance testing of beef and dual-purpose bulls in AI C 3.1 Bech Andersen, B. (Denmark), de Baerdemaeker, A. (Belgium), Bittante, G. (Italy), Bonaiti, B., Colleau, J.J. (France), Fimland, E. (Norway), Jansen, J. (The Netherlands), Lewis, W.H.E. (United Kingdom), Politiek, R.D. (The Netherlands), Seeland, G. (German Democratic Republic), Teehan, R.J. (Ireland) and Werkmeister, F. (Federal Republic of Germany). Performance testing of bulls in AI. Report on an EEC/EAAP Working Group. C 3.2 Cuthbertson, A. (United Kingdom), Bech Andersen, B. (Denmark) and Miles, C.A. (United Kingdom). Progress report on a study of ultrasonic techniques for the description of beef carcass characteristics. C 3.3 Busk, H. (Denmark). A new technique for measuring b o d y composition on live animals. C 3.4 Almlid, T. (Norway). The possibilities of including constitutional traits into performance tests of bulls. C 3.6 Averdunk, G., Alps, H., Gottschalk, A. and Fusseder, J. (Federal Republic of Germany). Relationship between sire performance test results and the results of the progeny test for fattening and carcass merit. C 3.7 Raschel, H., Walz, J. and Schneider, P. (Federal Republic of Germany). Possibilities for evaluating the claw of test bulls and for using claw parameters for selection. C 3.8 Wenzler, H., Haussmann, H. and Schlote, W. (Federal Republic of Germany). BLUPevaluation of performance-tested young bulls. C 3.9 Jongeling, C., Goudschaal, H. and Langholz, H.-J. (Federal Republic of Germany). Performance testing of Friesian bulls for growth rate with special reference to shortperiod testing. C 3.11 Bonaiti, B. and B~ranger, C. (France). Some considerations on performance testing of beef cattle in France. IV. Long Range Study on future developments in European cattle production c 4.1 Van Dijk, G. (The Netherlands). Future developments in production, consumption, trade and policies for the animal production industries. C 4.3 Jasiorowski, H.A. (Poland). Developments in the cattle production sectors in Eastern Europe. C 4.4 Politiek, R.D. (The Netherlands). Long Range Study on future developments in European animal production. A progress report. C 4.5 Langholz, H.-J. (Federal Republic of Germany). Outline for studies in cattle production.
V. Short papers C 5.1 Pfau, A.A. (Federal Republic of Germany) and Shebaita, M.K. (Egypt). Studies on bodywater in bulls under heat stress. C 5.4 Khalil, H. and Pirchner, F. (Federal Republic of Germany). Genetic parameter estimates for feed efficiency in cattle. C 5.5 Dommerholt, J. (The Netherlands). Deviation from or percentage o f herd yield in breeding-value estimation for dairy traits. C 5.6 Meijering, A. (The Netherlands). Predictability of levels of calving difficulties and stillbirths in heifers from calving data from older cows. C 5.7 Brzozowski, A. (Poland). Behaviour of cows in industrial farms of various technologies. C 5.8 Juszczak, J., Dziadek, B., Krempa, T. and Szulc, T. (Poland). Interdependences between milk characteristics and their use for estimation of cows' yield on the basis of incomplete milk-testing. C 5.9 Juszczak, J., Dobicki, A., Hibner, A., Szulc, T., Szyszkowski, L., Ziemifiski, R., Zuk, B. and Romer, J. (Poland). The genetic aspects of evaluation of sires on the basis of their progeny being fattened outside the testing stations, in fattening houses.
180 C 5.10 Dymnicki, E., Jasiorowski, H., Grabiwski, R. and Wojtulewicz, B. (Poland). Breeding value of daughters from individual matings: sire dam x sire bull. C 5.11 Graf, F. and Tenhumberg, H. (Federal Republic of Germany). Genetic influences on the values of metabolites and enzymes in the blood of dairy cows. C 5.12 Kruff, B., Brem, G. and Lampeter, W.W. (Federal Republic of Germany). Economic and breeding aspects of embryo transfer in heifers. C 5.14 Erhardt, G. and Senft, B. (Federal Republic of Germany). Interaction between lactoferrin and citrate, and its relation to the health of the mammary gland. C 5.16 Trela, J., Dorynek, Z., Trela, E. and Rychlik, T. (Poland). Influences in a limited number of bull sires of immunogenetic changes in cattle. C 5.17 Alifakiotis, T. and Kiriafinis, B. (Greece). Breeding cows at a pre-determined time by using an intravaginal silastic coil impregnated with progesterone with or without PMSG and prostaglandin F:a. C 5.18 Nagy, N. (Hungary). Results and methods of progeny-testing of cattle in Hungary. C 5.19 Huth, F.-W. and Schutzbar, W. (Federal Republic of Germany). Changes of carcass composition in young fattening bulls dependent on feeding intensity and age of the animals respectively. C 5.20 Drozdz, A.A. (Poland). Hoof box traits of 10 groups of crossbred Friesian cattle. C 5.21 Hill, R.E. (United Kingdom). The value of pyrethrum marc as a feed for three species of East African ruminants. C 5.22 Shook, G.E. and Ali, A.K.A. (U.S.A.). Heritability and repeatability of somatic cell concentration in herds on production testing. VI. S h o r t papers and business m e e t i n g C 6.1 Alps, H., Matzke, P. and Averdunk, G. (Federal Republic of Germany). Estimation of meat and bone content in the carcass using carcass measurement in progeny test stations. C 6.2 M~ihl, H. and Langholz, H.-J. (Federal Republic of Germany). Commercial crossbreeding at German Friesians with large-sized Italian sire breeds. C 6.3 Pirchner, F. and El-Hakim, A. (Federal Republic of Germany). Prediction of carcass value from live measurements. C 6.5 Dobicki, A., Juszczak, J., Romer, J., Szulc, T., Tomaszewski, A. and Ziemifiski, R. (Poland). Fattening and slaughter value of crossbreds from Red and White cows with Charolais, Simental, Piemontese and Chianina bulls in half-intensive and intensive fattening. C 6.6 Stefler, J. (Hungary). Increase of calf crop in Hungarian Fleckvieh by pre-utilization. C 6.8 Urban, F. and Dvo]~a'~ek,M. (Czechoslovakia). Perspective types of cattle for the intensive large-scale production conditions. COMMISSION ON SHEEP AND GOAT PRODUCTION
I. Quality in lamb and kid carcasses S 1.1 Sch6n, I. and Sch6n, L. (Federal Republic of Germany). Quality in lamb carcasses. S 1.2 Kempster, A.J. (United Kingdom). Evaluation in lamb carcass composition in breeding schemes, population studies and experiments. S 1.3 Morand-Fehr, P., Sauvant, D., Hervieu, J. and Bas, P. (France). Kid carcass quality: technical and commercial aspects. S 1.4 ~umlivski, B. (Czechoslovakia). Effect of nutrition intensity on the size and quality of lamb carcasses -- Mutton Merino sibs. S 1.5 Zezza, L., Muscio, A., Celi, R., Marsico, G. and Centoducati, P. (Italy). On the carcass quality in sheep as affected by genetic type and age at slaughter. S 1.6 Burgkart, M. and Schwinghammer, A. (Federal Republic of Germany). Carcass quality of lambs from different crosses.
181
s 1.7 Finger, K.H., Wassmuth, R. and Beuing, R. (Federal Republic of Germany). Investigations on fat quality in purebred and crossbred lambs. S 1.8 Thorsteinsson, S.S. and BjSrnsson, H. (Iceland). Estimates of genetic parameters for carcass quality traits, live weight and carcass weight of twin ram lambs. S 1.10 Croston, D. and Kempster, A.J. (United Kingdom). The relevance of carcass evaluation to the future of the Texel sheep in Great Britain. S. 1.11 Arnason, Th. (Sweden) and Thorsteinsson, S.S. (Iceland). Analysis of the principal components of carcass traits of twin ram lambs and construction of a selection index. (An application of the bending procedure.) S 1.12 Bas, P., Morand-Fehr, P., Van Quackebeke, E. and Cazes, J.P. (France). Study on the soft aspects of subcutaneous fats of some lamb carcasses. S 1.13 Andersson, O. and Hansson, I. (Sweden). Swedish lamb carcass classification. III. The influence of prenatal development and postnatal environment on suckling behaviour and survival o f the neonate S 3.1 Robinson, J.J. (United Kingdom). Prenatal growth and development in the sheep and its implications for the viability of the newborn lamb. S 3.2 Jatsch, O., Flach, D. and Wassmuth, R., (Federal Republic of Germany). Changes in free fatty acid and glucose concentrations in the blood of newborn lambs. S 3.3 Flach, D., Jatsch, O. and Wassmuth, R. (Federal Republic of Germany). Pulse frequencies and body temperatures of newborn lambs and their relationship to survival. S 3.4 Slee, J. (United Kingdom). Genetic aspects of survival and resistance to cold in newborn lambs. S 3.6 Ojala, I., Tengroth, G. and Nilsson, B. (Sweden). Udder-health of ewes and crosssuckling by lambs. S 3.7 ~umlivski, B. (Czechoslovakia). Comparison of variability of prenatal and postnatal death-losses in Merino lambs. S 3.8 Morand-Fehr, P., Guillimin, P., Toussaint, G. and Hervieu, J. (France). Some data on perinatal mortality in young goats. S 3.9 ~umlivski, B. (Czechoslovakia). Correlation between liveweight and viability of East-Friesian lambs at birth and their prenatal and postnatal mortality. S 3.10 Jankowski, S. and Przerwa-Tetmajer, W. (Poland). Ease of care, survival rate and growth of lambs born and reared in two extremely different environments. S 3.12 Lawlor, M.J. (Ireland). The effects of perinatal undernutrition of ewes on lamb mortality, ewe milk yields and tailendness in lambs. S 3.13 Herold, I., J~vor, A., Csernus, I., Kov~ts, K. and K~llai, M. (Hungary). Data to the question of artificial rearing of lambs.
V. Open papers S 5.1 D:~rmundsson, O.R. (Iceland). Out-of-season breeding in Icelandic sheep. S 5.2 Glahn-Luft, B. and Wassmuth, R. (Federal Republic of Germany). The influence of the 1/20-translocation in sheep on the efficiency of reproduction. S 5.3 Sengonca, M. (Turkey). An adaptation experiment with the German White Goat (Edelziege) in the Ege region of Turkey. S 5.4 ~au§evi6, Z. (Yugoslavia). The influence of acclimatization on some wool qualities of the Merinolandsehaf breed in Bosnia. S 5.5 Celi, R., Montemurro, O., Martemucci, G., Museio, A., Zezza, L. and De Santis, A. (Italy). The influence of shearing on the total bodywater and its turnover in Altamurana sheep. S 5.6 Kessler, J., Wanner, M. and Pfister, K. (Switzerland). Blood values of young and adult goats.
182 S 5.7 Trimarchi, G., Rossi, G., Secchiari, P. and Ferruzzi, G. (Italy). Intake of corn silage and production response in dairy sheep. S 5.8 Ga~l, M. (Hungary). Rearing early-weaned Hungarian Fine-Wool Merino lambs on milk-replacer and lamb-starter. S 5.9 Manfredini, M., Cavani, C. and Lenzi, P. (Italy). Distillery effluents as animal feed : the use of condensed carob stillage (CCS) in lambs' feeding. S 5.10 Vazhapilly, P., Bertoni, G. and Thuruthumaly, T. (Italy). Partial substitution of NaOH by NH 3 in the treatment of wheat straw : effects on growing lambs. S 5.11 Finger, K.H., Schmid, D.O., Jatsch, O., Sabo, I. and Flach, E. (Federal Republic of Germany). Investigation on the accuracy of pedigree information in breeding flocks. S 5.12 Trimarchi, G., Rossi, G., Secchiari, P. and Ferruzzi, G. (Italy). Suitability of different types of sheep-feeding cribs. S 5.14 Alvarez, P.J., Ovejero, F.J., Guada, J.A. and Gonz~les, J.S. (Spain). Prediction of the energy value of ewes' milk. S 5.15 Peters, K.J. (Federal Republic of Germany). Investigations on the socio-economic position of goats in low-income economic units in the humid tropics of Malaysia. S 5.18 Pappas, V. and Zervas, N. (Greece). Comparison of three methods of synchronization of ovulation in ewes during the breeding season. S 5.19 Alifakiotis, T., Katanos, I., Hatjiminaoglou, I. and Zervas, N. (Greece). Lactation in dairy ewes induced by short-term hormonal treatments. S 5.22 ZaTuska, K., Heller, K. and Bernacki, Z. (Poland). Correlations between the degree of relation in flocks of Polish Merino and the production traits of their offspring. COMMISSION ON PIG PRODUCTION
I. The physiology o f genetic change in pigs P 1.1 Herbst, K. (Federal Republic of Germany). Development, state and perspectives of pig production in the Federal Republic of Germany. P 1.2 Lister, D., Wood, J.D. and Perry, B.N. (United Kingdom). Concepts of physiology which are relevant to pig breeding. P 1.5 Standal, N. (Norway). Hormonal responses in pigs selected for different traits. P 1.7 Unshelm, J. (Federal Republic of Germany). Physiological defects in pigs resulting from selection. P 1.8 Land, R.B. (United Kingdom). Physiological criteria and genetic selection. II. P P P P P P P P P P P
Improving sow fertility
2.1 Smith, D.H. (United Kingdom). The financial implications of sow productivity. 2.2 Wrathall, A.E. (United Kingdom). Reproductive failure mechanisms in pigs. 2.3 O'Grady, J.F. (Ireland). Nutritional influences on fertility in sows. 2.4 Te Brake, J.H.A. (The Netherlands). Management and environment in relation to fertility in the female pig. 2.5 Johansson, K. (Sweden). Some notes concerning the genetic possibilities for improving sow fertility. 2.6 Legault, C. (France). Genetics and reproduction in pigs. 2.7 Danielsen, V. (Denmark). The effect of weaning age on reproductive performance in the pig. 2.8 Van der Heyde, H. and Lievens, R. (Belgium). Litter size following early weaning. Evolution 1970--1978 in a herd of 150 sows. 2.9 Milojid, M. (Yugoslavia). Improvement of sow fertility based on different crossing systems. 2.10 Stur, I. (Austria). Influence of the boar on number of piglets and gestation length. 2.11 Fiedler, J. (Czechoslovakia). Analysis of reproduction traits under large-scale conditions of pig breeding.
183
IV. (a) The use of bulk feeds for pig feeding
(b ) Long Range Study on future developments in European pig production P 4.1 Livingstone, R.M. (United Kingdom). The digestion of succulent feeds b y pigs. P 4.2 Hanrahan, T.J. (Ireland). Problems associated with feeding whey and delactosed whey to pigs. P 4.3 Fevrier, C. (Switzerland). Physiological limits to the use of bulky feeds: dairy byproducts and maize silage. P 4.4 Zoiopoulos, P.E. (Greece), English, P.R. and Topps, J.H. (United Kingdom). Preliminary studies on feeding the breeding gilt to appetite on a fibrous diet. P 4.5 Wenk, C., Pfirter, H.P., Halter, H.M., Stoll, P. and Messikommer, R. (Switzerland). Nutritional value of maize plants and of differently preserved maize cobs for fattening ni~s. P 4.6 Bodart, C., Thielemans, M.F. and Vandenbyvang, P. (Belgium). Incorporation of fibrous feeds in the ration of the growing/finishing pig. P 4.7 Aumaitre, A. (France). Long-Range Study on the future of pig production in Europe; preliminary reflections.
V and VI. Free communications and business meeting P 5 / 6 . 1 Le Denmat, M., Runavot, J.P. and Albar, J. (France). Results of an investigation on breeding boars' characteristics in a sample of 293 commercial herds. P 5 / 6 . 2 Naveau, J. and Fleho, J.Y. (France). Heritability of performance controlled on a specific farm; choice of a growth trait. P 5 / 6 . 3 Bohnenkemper, O. and Glodek, P. (Federal Republic of Germany). Effects of varying sampling in parental populations on comparisons of their progeny groups. P 5 / 6 . 5 M6sz~ros, Z. and Radnai, I. (Hungary). Negative correlations among production traits of purebred and hybrid swine populations. P 5 / 6 . 6 Kov~ics, J. (Hungary). Effects of paternal heredity of sows on their fertility. P 5 / 6 . 7 Sredkovi6, A., Nikolid, M., Brundza, V. and Uremovi6, M. (Yugoslavia). The effect of crossbreeding different breeds of pigs on increasing the meat yield in fatteners. P 5 / 6 . 1 0 Pavl~k, J. and ~iler, R. (Czechoslovakia). Application of the least-squares method for the expression of the heterosis effect in the pig. P 5 / 6 . 1 1 Majer~iak, P. (Czechoslovakia). Reproductive and meat performance of different kinds o f pigs in a hybridisation programme. P 5 / 6 . 1 2 Brascamp, E.W. and Buiting, G.A.J. (The Netherlands). Preliminary results of Duroc as maternal grandsire of fattening pigs. P 5 / 6 . 1 3 Ehrensv~rd, U., Berschauer, F., Gaus, G. and Menke, K.H. (Federal Republic of Germany). Insulin and glucose concentrations in Pi6train, German Landrace and German Edelschwein breeds of pigs. P 5 / 6 . 1 4 Berschauer, F., Gaus, G., Ehrensv~ird, U. and Menke, K.H. (Federal Republic of Germany). Protein and energy utilization and blood urea concentration in Pi6train, German Landrace and German Edelschwein breeds of pigs. P 5 / 6 . 1 5 Wiseman, J., Cole, D.J.A. and Lewis, D. (United Kingdom). Determination and prediction of the DE and ME contents of cereals for pigs. P 5 / 6 . 1 6 Hyldgaard-Jensen, J., J~brgensen, P.F. and Wegger, I. (Denmark). Nutrition and immune response in pigs. P 5 / 6 . 1 7 Madsen, A., Elling, F., Hald, B. and Mortensen, H.P. (Denmark). Ochratoxincontaminated barley for bacon pigs. P 5 / 6 . 1 8 Rogdakis, E., Ensinger, U. and Von Faber, H. (Federal Republic of Germany). Hormone levels in relation to the halothane reaction of pigs. P 5 / 6 . 1 9 Dzapo, V. (Federal Republic of Germany). Status of the mitochondrial energy metabolism in pigs with different halothane sensitivity, and pale colour of meat.
184 P 5 / 6 . 2 0 Finger, K.W., Dzapo, V. and Wassmuth, R. (Federal Republic of Germany). Changes in muscle fibre structure in relation to pale colour and vitality of meat. P 5 / 6 . 2 1 Henning, M. and Kallweit, E. (Federal Republic of Germany). The influence of CO: in the narcotic system on the halothane reaction. P 5 / 6 . 2 2 Webb, A.J. (United Kingdom). The effect of age on the expression of the halothane gene in pigs. P 5 / 6 . 2 3 Michos, G., Matsoukas, I. and Alifakiotis, T. (Greece). Maintenance of pregnancy with exogenous hormones in prepuberal gilts. P 5 / 6 . 2 4 Alifakiotis, T., Matsoukas, I., Gavrilidis, G. and Matzaris, E. (Greece). Hormonal induction of breeding in the lactating sow. P 5 / 6 . 2 5 Schneider, A., Schmidlin, J. and Gerwig, C. (Switzerland). Investigation of reproductive performances of purebred and crossbred sows from a pig production organization. P 5 / 6 . 2 6 PTonka, S. and KapTon, M. (Poland). Reproductive performance of sows in a large-scale swine operation in Poland. P 5 / 6 . 2 7 Seve, B. (France). Age at weaning and development of body components of piglets from 3 to 25 kg liveweight. P 5/6. 28 Werhahn, E., Klobasa, F. (Federal Republic of Germany) and Habe, F. (Yugoslavia). Passive immunization of hand-raised piglets with heterologous immunoglobulins. P 5/6. 29 Valle-Zarate, A. and Rogdakis, E. (Federal Republic of Germany). Population genetic parameter of feed intake in pigs. P 5 / 6 . 3 0 Rothfuss, U. and Rogdakis, E. (Federal Republic of Germany). Metabolic parameters of adipose tissue in Pi4train and Large White pigs. P 5/6.31 Geri, G. and Poli, B.M. (Italy). Some characteristics of intramuscular fat in pigs of 80 and 160 kg liveweight. P 5 / 6 . 3 2 ~iler, R. and Pavllk, J. (Czechoslovakia). Analysis of the growth intensity of Hampshire, Duroc and Belgian Landrace pigs. P 5 / 6 . 3 3 Desmoulin, B. and Pommeret, P. (France). Total or partial dissection of pig carcasses: signification of EEC references. P 5 / 6 . 3 4 Artioli, D. and Chizzolini, R. (Italy). Soft fat in Parma ham. P 5 / 6 . 3 5 Geri, G. and Zappa, A. (Italy). Cellularity of fatty tissue in swine: its evolution for weight classes of 20 kg, from 40 to 200 kg liveweight. P 5 / 6 . 3 6 Blendl, H.M. and Husslein, E. (Federal Republic of Germany). Muscle thickness/ fat quotients and their correlations with carcass value in the pig. P 5 / 6 . 3 8 Andersson, U. (Sweden). A new integrated data-base for pig recording. P 5 / 6 . 3 9 Hughes, P.E. and Kirkwood, R.N. (United Kingdom). Boar-induced precocious puberty in the gilt. P 5 / 6 . 4 0 Waterworth, D.G., Heath, M.E. and Robinson, M. (United Kingdom). The inclusion of "pruteen" in the diet of fattening pigs. P 5 / 6 . 4 1 Thielemans, M.F. and Bodart, Ch. (Belgium). Effect of monensin on the performance of finishing swine. COMMISSION ON HORSE PRODUCTION
I. Performance testing and breeding planning H 1.1 Langlois, B. (France). Efficiency and precision of the selection index for sport horses in France. H 1.2 Bruns, E. (Federal Republic of Germany). Estimation of breeding value of stallions on the basis of tournament performance of their offspring. H 1.3 Thafvelin, B., Philipsson, J. and Darenius, A. (Sweden). Genetic studies on ridinghorse traits under field conditions. H 1.4 Sasimowski, E. and Pietrzak, S. (Poland). Obstacle-jump competition as a measure of utility of saddle-horses.
185 H 1.50csag, I. (Hungary). Adoption of discriminance analysis in examinations of sport colts. H 1.6 Ojala, M.J. (Finland). Measures of racetrack performance with regard to breeding evaluation of trotters. H 1.7 Katona, (). (Federal Republic of Germany). Index selection in the German trotter. H 1.8 Arnason, T., Darenius, A. and Philipsson, J. (Sweden). Genetic studies on the Swedish trotting-horse. H 1.11 Sasimowski, E., Budzyfiski, M. and Kolstrung, R. (Poland). Purebred Arab horses as winners in classic horse-racing and their utilization in breeding. H 1.12 Telalba~i6, R. and Pajanovi~, R. (Yugoslavia). Present situation in inbreeding as a phase of breeding formation in the modern type of mountain horse. H 1.14 Zaruska, J. and Ciesielski, W. (Poland). Continuation of the "Trakehner" in the stud farm Rzeczna with regard to relationship and inbreeding. H 1.15 Arnason, Th. (Iceland). Genetic studies on the Icelandic Toelter horse. H 1.16 Kiener, A. (Switzerland). Studies for the determination of the specific breeding value of different stallions and broodmares in Swiss warm-blood and heavy horse breeding.
II. Aspects o f diseases in horses H 2.1 Bergsten, G. (Sweden). The durability of the Swedish standardbred riding horse judged from material of insured horses. H 2.4 Magnusson, L.-E. (Sweden). Health control of horses in riding establishments. H 2.5 Graaf, K. and Magnusson, L.-E. (Sweden). Upward fixation and retention of the patella in the horse. H 2.7 Muuss, H. and Meyer, H. (Federal Republic of Germany). Investigations of the passage of intestinal contents from the ileum into the caecum, and intestinal circulation of water and sodium in the horse. H 2.8 Staun, H. (Denmark). Long Range Study on future developments in European horse production; preliminary report:
IV. Free papers H 4.1 Hartwig, W. (Federal Republic of Germany). Organisation of horse breeding in Germany. H 4.3 SchSn, D. (Federal Republic of Germany). Draft-horse breeding in the Federal Republic of Germany. H 4.4 Bormann, P. (Federal Republic of Germany). Horsebreeding in Germany. Thoroughbreds and trotters. H 4.5 Dattilo, M. (Italy). Variations of glucose and lactic acid in the blood-stream before and after the race. H 4.6 Senft, B. and Meyer, F. (Federal Republic of Germany). Modifications in the concentrations of protein fractions in the blood and milk of mares, as well as in the blood of their foals. H 4.7 Budzyhski, M. (Poland). The evaluation of excitability and sedateness of the nervous system of thoroughbreds at the time of their growth and development. H 4.8 Pettonen, T., Kossila, V., Antila, V. and Huida, L. (Finland). Effect of protein supplement on milk composition of the mares and growth rate of their foals. H 4.9 Galizzi Vecchiotti, G. (Italy). Observations on mares' fertility in thoroughbred horses raised in Italy. H 4.10 Minning, E. and Wenniger, J.H. (Federal Republic of Germany). Influences on becoming pregnant and pregnancy duration for Hanoverian broodmares. H 4.12 Ubbenjans, M. (Federal Republic of Germany). Examinations on horse-keeping on artificial ground-coverings.
186
VI. Business meeting and short papers H 6.1 Preuschoft, H. (Federal Republic of Germany). On the quality and magnitude of stresses in the metapodials and phalanges of saddle horses in various gaits. H 6.2 SchSn, D. and SchSn, E. (Federal Republic of Germany). Withers height of twoyear-old colts of German light horse breeds at the date of presentation for licensing and its relation to sire and month of birth. H 6.6 Ki~nzi, A. (Switzerland). Analytical and statistical examinations on Swiss "Freiberger" and warm-blood breeding horses. H 6.7 Stranzinger, G. (Switzerland). Determination of sex chromosomes in horses. H 6.8 Martin-Rosset, W. and Doreau, M. (France). Effect of variations in level of feeding of heavy mares during late pregnancy.