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Zinc Content of feed ingredients and Dried egg Samples1
339
RESEARCH NOTES
ZINC C O N T E N T OF F E E D I N G R E D I E N T S AND D R I E D EGG SAMPLES1 T. W. Department
SULLIVAN
of Poultry Husbandry,
University
of Nebraska,
Lincoln
3
(Received for publication October 23, 1961)
T h e samples were wet-ashed with nitric and perchloric acids; zinc was determined by the A.P.H.A. (1955) dithizone method. Analytical data are presented in Table 1. These d a t a clearly show t h a t feed ingredients vary considerably as to zinc content. This was true of materials of both plant and animal origin. Dried whey contains only 3 parts per million (ppm.), while steamed bone meal contains 172.4 p p m . of zinc. Wheat bran and wheat middlings contain relatively high levels of zinc, 80 and 152.5 ppm., respectively. T a p water at Lincoln contains 1.9 ppm. of zinc, or about 19 times as much as singly distilled water. In the chicken egg zinc is concentrated in the yolk, which contains 88.5 p p m . on a dry weight basis as compared to 3.5 p p m . in dried white or albumen. These dried samples were obtained from eggs produced b y hens fed a ration containing the following per 100 p o u n d s : ground yellow corn, 60.5; wheat middlings, 13; soybean oil meal ( 4 4 % protein), 1 1 ; de1
Published with the approval of the Director as paper No. 1168, Journal Series, Nebraska Agricultural Experiment Station.
TABLE 1.—Zinc content of poultry feed ingredients, water and dried egg samples Material
Number Zi ° c ar c f on '™ t * of samples P " ^
Alfalfa meal, dehy. (17% protein) Corn, ground yellow Milo, ground Wheat middlings, standard Wheat bran Distillers dried solubles, corn Yeast culture, dried Soybean oil meal (44% protein) Soybean protein, isolated Whey, dried whole Meat and bone scraps (50% protein) Bone meal, steamed Fish meal, menhaden (60% protein) Water, singly distilled Water, tap Egg yolk, dried Egg white, dried
1 2 1 1 1 1 1 2 2 1 2 1 .1 2 2 2 2
23.8 21.6 17.0 152.5 80.0 85.0 78.4 59.0 36.0 3.0
98.2 172.4 112.4 0.1 1.9
88.5 3.5
* Each value is the average of two individual determinations per sample analyzed.
hydrated alfalfa meal, 3 ; meat and bone scrap, 4; dried whey, 2.5; steamed bone bone meal, 1.5; iodized salt, 0.5; ground limestone, 3.5; manganese sulfate 0.025 and vitamin premix, 0.5. ACKNOWLEDGMENT T h e author is indebted to Mr. Joe D a p pen for technical assistance in this work. REFERENCES American Public Health Association, 1955. Standard Methods for the Examination of Water, Sewage and Industrial Wastes. 10th ed. The Amer. Public Health Assn., 1790 Broadway, New York 19, N. Y. Norris, L. C, R. M. Leach, Jr. and T. R. Zeigler, 1958. Recent research on the mineral requirements of poultry. Proc. Twelfth Distillers Feed Conference 13: 61-71. Rahman, M. M., J. N. Baruah, H. D. Stelzner, R. E. Davies and J. R. Couch, 1959. Distribution of Zn65 in mature hens. Poultry Sci. 38: 1239. Sullivan, T. W., 1961. The zinc requirement of Broad Breasted Bronze poults. Poultry Sci. 40: 334-340.
Downloaded from http://ps.oxfordjournals.org/ at Univ of Iowa-Law Library on June 3, 2015
D a t a pertaining to the zinc content of certain poultry feed ingredients were reported by Norris et al. (1958). R a h m a n et al. (1959) described the distribution of Zn 66 in mature hens. I n conjunction with zinc requirement studies, previously reported (Sullivan, 1961), a number of practical feed ingredients and two samples of dried eggs were analyzed for zinc content.
RESEARCH NOTES
ZINC C O N T E N T OF F E E D I N G R E D I E N T S AND D R I E D EGG SAMPLES1 T. W. Department
SULLIVAN
of Poultry Husbandry,
University
of Nebraska,
Lincoln
3
(Received for publication October 23, 1961)
T h e samples were wet-ashed with nitric and perchloric acids; zinc was determined by the A.P.H.A. (1955) dithizone method. Analytical data are presented in Table 1. These d a t a clearly show t h a t feed ingredients vary considerably as to zinc content. This was true of materials of both plant and animal origin. Dried whey contains only 3 parts per million (ppm.), while steamed bone meal contains 172.4 p p m . of zinc. Wheat bran and wheat middlings contain relatively high levels of zinc, 80 and 152.5 ppm., respectively. T a p water at Lincoln contains 1.9 ppm. of zinc, or about 19 times as much as singly distilled water. In the chicken egg zinc is concentrated in the yolk, which contains 88.5 p p m . on a dry weight basis as compared to 3.5 p p m . in dried white or albumen. These dried samples were obtained from eggs produced b y hens fed a ration containing the following per 100 p o u n d s : ground yellow corn, 60.5; wheat middlings, 13; soybean oil meal ( 4 4 % protein), 1 1 ; de1
Published with the approval of the Director as paper No. 1168, Journal Series, Nebraska Agricultural Experiment Station.
TABLE 1.—Zinc content of poultry feed ingredients, water and dried egg samples Material
Number Zi ° c ar c f on '™ t * of samples P " ^
Alfalfa meal, dehy. (17% protein) Corn, ground yellow Milo, ground Wheat middlings, standard Wheat bran Distillers dried solubles, corn Yeast culture, dried Soybean oil meal (44% protein) Soybean protein, isolated Whey, dried whole Meat and bone scraps (50% protein) Bone meal, steamed Fish meal, menhaden (60% protein) Water, singly distilled Water, tap Egg yolk, dried Egg white, dried
1 2 1 1 1 1 1 2 2 1 2 1 .1 2 2 2 2
23.8 21.6 17.0 152.5 80.0 85.0 78.4 59.0 36.0 3.0
98.2 172.4 112.4 0.1 1.9
88.5 3.5
* Each value is the average of two individual determinations per sample analyzed.
hydrated alfalfa meal, 3 ; meat and bone scrap, 4; dried whey, 2.5; steamed bone bone meal, 1.5; iodized salt, 0.5; ground limestone, 3.5; manganese sulfate 0.025 and vitamin premix, 0.5. ACKNOWLEDGMENT T h e author is indebted to Mr. Joe D a p pen for technical assistance in this work. REFERENCES American Public Health Association, 1955. Standard Methods for the Examination of Water, Sewage and Industrial Wastes. 10th ed. The Amer. Public Health Assn., 1790 Broadway, New York 19, N. Y. Norris, L. C, R. M. Leach, Jr. and T. R. Zeigler, 1958. Recent research on the mineral requirements of poultry. Proc. Twelfth Distillers Feed Conference 13: 61-71. Rahman, M. M., J. N. Baruah, H. D. Stelzner, R. E. Davies and J. R. Couch, 1959. Distribution of Zn65 in mature hens. Poultry Sci. 38: 1239. Sullivan, T. W., 1961. The zinc requirement of Broad Breasted Bronze poults. Poultry Sci. 40: 334-340.
Downloaded from http://ps.oxfordjournals.org/ at Univ of Iowa-Law Library on June 3, 2015
D a t a pertaining to the zinc content of certain poultry feed ingredients were reported by Norris et al. (1958). R a h m a n et al. (1959) described the distribution of Zn 66 in mature hens. I n conjunction with zinc requirement studies, previously reported (Sullivan, 1961), a number of practical feed ingredients and two samples of dried eggs were analyzed for zinc content.