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The effect of environmental temperature variation, on milk yield and composition, in dairy cows
Abstracts / Journal of Biotechnology 208 (2015) S5–S120
Researches regarding reproduction activity in two pure breed Lipizzaner breeding units Mirela Cristina Enciu (matei) 1,∗ , Paul Rodian Tapaloaga 2 , Lenuta Fotea 3 , Georgeta Dinita 2 , Georgiana Litoi 1 , Georgeta Darla (talpus) 1 1 Engineering and Management of Vegetal and Animal Resources Doctoral School, UASVM Bucharest, Romania 2 Faculty of Animal Science, UASVM Bucharest, Romania 3 Department of Management of Animal Production, Faculty of Animal Science, UASVM Iasi, Romania
E-mail address: [email protected] (M.C. Enciu (matei)). Lipizzaner breed is a strong breed from the phenotypic and also genotypic point of view. Horses have an elegant and harmonious conformation, a good behaviour, being the main breed used for academic dressage and driving all over the world. The assessment of the reproduction activity efficiency in a farm by reproduction indices calculation gives the researchers the possibility of the permanent knowledge of reproduction status and meanwhile the elimination of some important economical losses. Evaluation of the breeding performance of horses in this way may be helpful for future breeding purposes. The present study is based upon the reproduction indices calculation in Lipizzaner mares bred in two units and also upon sexual behaviour and some reproduction indices calculated in stallions and these correlations with their productive performances. There were analyzed the performances recorded in competitions and there were calculated the reproduction indices in two breeding units, a private one and also a state one. There were studied the following indices: the age at first foal, at the second foal, the service period, the interval between foaling, the number of pregnancies, the length of pregnancy and the number of foals. In stallions there were recorded the intensity of sexual reflexes, the number of foals and mating. The indices were statistically processed and there were not recorded significant differences within lines (P < 0.01). The results concluded the fact that the best results were noticed in Favory line, in both stud-farms. http://dx.doi.org/10.1016/j.jbiotec.2015.06.108 Study regarding of intrauterine inoculation of semen in sow Georgeta Darla (talpus) 1,∗ , Paul Rodian Tapaloaga 2 , Dana Tapaloaga 3 , Adrian Dragan 1 , Ioan Albu 1 , Mirela Cristina Enciu (matei) 1 1 Engineering and Management of Vegetal and Animal Resources Doctoral School, UASVM Bucharest, Romania 2 Faculty of Animal Science, UASVM Bucharest, Romania 3 Faculty of Veterinary Medicine, UASVM Bucharest, Romania
E-mail address: [email protected] (G. Darla (talpus)). Herd fertility is critical to the success of any breeding pig unit. Artificial Insemination started to dominate the reproductive process on many farms because the procedure brings superior sire Iine genetics onto the unit and across many females, which could not normally be achieved cost-effectively by natural matings. The aim of our researches was the study of some reproductive processes in swine, using different insemination method in sows.
S39
Our researches were carried out on four homogenous physiologically batches of 25 artificial inseminated sows. In the first two batches there were done intra cervical inoculation, once at 24 h after heat detection and the second at 24 h interval and in the other two batches an intrauterine inoculation in the same pattern as above, once at 24 h after heat detection and twice at 24 h interval. The recorded data were statistically processed and there were noticed the differences in and within the four groups. Analyzing the results, the best performance was obtained in batch four. The insemination method stimulated the sow reflexes, increasing the fecundity and also prolificacy indices. By the recorded data we can conclude the fact that even the intrauterine insemination is more pretentious from the handling point of view, there is recorded the best ejaculate using, so it could be used in commercial farms as a substitution method comparatively the cervical inoculation. http://dx.doi.org/10.1016/j.jbiotec.2015.06.109 The effect of environmental temperature variation, on milk yield and composition, in dairy cows Gabriel Cotor ∗ , Gabriel Gâjâil˘a, Alexandru Bogdan Vitelaru, Marian Ghit¸a˘ , Cornel Br˘aslas¸u Department of Preclinical Sciences, The Faculty of Veterinary Medicine, Bucharest, Romania E-mail address: [email protected] (G. Cotor). In our experiment we used 10 dairy cows. Experimental period lasted 20 days. In this period the cows were milked twice daily, at 06.00 and 18.00. Milk yields were measured daily. Milk samples were collected at evening milking. These were used in order to determine the concentration of fat and milk protein. The ambient temperature was evaluated daily at 12.00. Fat and protein content of milk samples was determined using an analyzer Lactoscan type LCD 60. Data were statistically analyzed (ANOVA). The mean temperature ranged between 22 ◦ C and 33 ◦ C. The mean milk yields, was 6.81% higher (P < 0.05) on days with temperature lower than 26 ◦ C, compared to that achieved on days with temperature higher than 26 ◦ C. Medium milk fat content was 4.14% higher (P < 0.05) on days with temperature lower than 25 ◦ C, versus the days with temperature higher than 26 ◦ C. The average content of milk protein was 0.94% higher on days with temperature lower than 26 ◦ C, versus the days with temperature higher than 25 ◦ C. It can be concluded that the temperature lower than 26 ◦ C, induced a significant increase of the average milk yields, milk fat concentration and milk protein concentration, compared to that of days with temperatures higher than 26 ◦ C. Our results can help to improve technologies for exploiting dairy cows. http://dx.doi.org/10.1016/j.jbiotec.2015.06.110 Mutations in the TYRP1 gene and their effect on coat colour in dogs Evelina Turnova ∗ , Zuzana Firdova, Marcela Bielikova, Jan Turna, Andrej Dudas Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia E-mail address: [email protected] (E. Turnova). Coat colour has been the subject of interest for breeders as well as scientists for many years. A domestic animal like dog (Canis lupus
Researches regarding reproduction activity in two pure breed Lipizzaner breeding units Mirela Cristina Enciu (matei) 1,∗ , Paul Rodian Tapaloaga 2 , Lenuta Fotea 3 , Georgeta Dinita 2 , Georgiana Litoi 1 , Georgeta Darla (talpus) 1 1 Engineering and Management of Vegetal and Animal Resources Doctoral School, UASVM Bucharest, Romania 2 Faculty of Animal Science, UASVM Bucharest, Romania 3 Department of Management of Animal Production, Faculty of Animal Science, UASVM Iasi, Romania
E-mail address: [email protected] (M.C. Enciu (matei)). Lipizzaner breed is a strong breed from the phenotypic and also genotypic point of view. Horses have an elegant and harmonious conformation, a good behaviour, being the main breed used for academic dressage and driving all over the world. The assessment of the reproduction activity efficiency in a farm by reproduction indices calculation gives the researchers the possibility of the permanent knowledge of reproduction status and meanwhile the elimination of some important economical losses. Evaluation of the breeding performance of horses in this way may be helpful for future breeding purposes. The present study is based upon the reproduction indices calculation in Lipizzaner mares bred in two units and also upon sexual behaviour and some reproduction indices calculated in stallions and these correlations with their productive performances. There were analyzed the performances recorded in competitions and there were calculated the reproduction indices in two breeding units, a private one and also a state one. There were studied the following indices: the age at first foal, at the second foal, the service period, the interval between foaling, the number of pregnancies, the length of pregnancy and the number of foals. In stallions there were recorded the intensity of sexual reflexes, the number of foals and mating. The indices were statistically processed and there were not recorded significant differences within lines (P < 0.01). The results concluded the fact that the best results were noticed in Favory line, in both stud-farms. http://dx.doi.org/10.1016/j.jbiotec.2015.06.108 Study regarding of intrauterine inoculation of semen in sow Georgeta Darla (talpus) 1,∗ , Paul Rodian Tapaloaga 2 , Dana Tapaloaga 3 , Adrian Dragan 1 , Ioan Albu 1 , Mirela Cristina Enciu (matei) 1 1 Engineering and Management of Vegetal and Animal Resources Doctoral School, UASVM Bucharest, Romania 2 Faculty of Animal Science, UASVM Bucharest, Romania 3 Faculty of Veterinary Medicine, UASVM Bucharest, Romania
E-mail address: [email protected] (G. Darla (talpus)). Herd fertility is critical to the success of any breeding pig unit. Artificial Insemination started to dominate the reproductive process on many farms because the procedure brings superior sire Iine genetics onto the unit and across many females, which could not normally be achieved cost-effectively by natural matings. The aim of our researches was the study of some reproductive processes in swine, using different insemination method in sows.
S39
Our researches were carried out on four homogenous physiologically batches of 25 artificial inseminated sows. In the first two batches there were done intra cervical inoculation, once at 24 h after heat detection and the second at 24 h interval and in the other two batches an intrauterine inoculation in the same pattern as above, once at 24 h after heat detection and twice at 24 h interval. The recorded data were statistically processed and there were noticed the differences in and within the four groups. Analyzing the results, the best performance was obtained in batch four. The insemination method stimulated the sow reflexes, increasing the fecundity and also prolificacy indices. By the recorded data we can conclude the fact that even the intrauterine insemination is more pretentious from the handling point of view, there is recorded the best ejaculate using, so it could be used in commercial farms as a substitution method comparatively the cervical inoculation. http://dx.doi.org/10.1016/j.jbiotec.2015.06.109 The effect of environmental temperature variation, on milk yield and composition, in dairy cows Gabriel Cotor ∗ , Gabriel Gâjâil˘a, Alexandru Bogdan Vitelaru, Marian Ghit¸a˘ , Cornel Br˘aslas¸u Department of Preclinical Sciences, The Faculty of Veterinary Medicine, Bucharest, Romania E-mail address: [email protected] (G. Cotor). In our experiment we used 10 dairy cows. Experimental period lasted 20 days. In this period the cows were milked twice daily, at 06.00 and 18.00. Milk yields were measured daily. Milk samples were collected at evening milking. These were used in order to determine the concentration of fat and milk protein. The ambient temperature was evaluated daily at 12.00. Fat and protein content of milk samples was determined using an analyzer Lactoscan type LCD 60. Data were statistically analyzed (ANOVA). The mean temperature ranged between 22 ◦ C and 33 ◦ C. The mean milk yields, was 6.81% higher (P < 0.05) on days with temperature lower than 26 ◦ C, compared to that achieved on days with temperature higher than 26 ◦ C. Medium milk fat content was 4.14% higher (P < 0.05) on days with temperature lower than 25 ◦ C, versus the days with temperature higher than 26 ◦ C. The average content of milk protein was 0.94% higher on days with temperature lower than 26 ◦ C, versus the days with temperature higher than 25 ◦ C. It can be concluded that the temperature lower than 26 ◦ C, induced a significant increase of the average milk yields, milk fat concentration and milk protein concentration, compared to that of days with temperatures higher than 26 ◦ C. Our results can help to improve technologies for exploiting dairy cows. http://dx.doi.org/10.1016/j.jbiotec.2015.06.110 Mutations in the TYRP1 gene and their effect on coat colour in dogs Evelina Turnova ∗ , Zuzana Firdova, Marcela Bielikova, Jan Turna, Andrej Dudas Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia E-mail address: [email protected] (E. Turnova). Coat colour has been the subject of interest for breeders as well as scientists for many years. A domestic animal like dog (Canis lupus