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Journal of Dairy Science Vol. 32 No. 7 671-678
© 1949 by American Dairy Science Association ®
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The Amino Acid Composition of Bovine Colostrum and Milk1,2

B. C. RAY Sarkar3, R. W. Luecke, C. W. Duncan and R. E. Ely1

Departments of Agricultural Chemistry and Dairy, Michigan Agricultural Experiment Station, Michigan State College, East Lansing

Mrs. Gertrude I. Watson and Alice J. Rykala

ABSTRACT

The concentration of ten amino acids in bovine colostrum and milk has been determined.

The colostrum collected within 1 hr. after parturition is higher in total protein than the 24-hr, composite sample and thus contained" larger amounts of the ten amino acids. The amino acid composition of the colostrum, based on total proteins, is similar.

No essential difference was obtained in the amino acid composition of the proteins of milk collected at the 60th and 90th days of lactation.

Data on the output of ten amino acids in colostrum and milk have been calculated and the approximate ingestion of these amino acids by the calf has been computed.

FOOTNOTES

1 Published with the approval of the director of the Michigan Agricultural Experiment Station as journal article no. 923 (n. s.).

2 This work was supported in part by a grant from the National Dairy Council on behalf of the American Dairy Association. Grateful acknowledgement also is made to Dr. Margaret A. Ohlson, head of the Department of Foods and Nutrition, for financial support in the conduct of this work.

3 Formerly visiting professor in the Department of Agricultural Chemistry. Present address: Indian Veterinary Research Institute, Izatnagar, U. P., India.

4 Present address: Bureau of Dairy Industry, Agricultural Research Administration, United States Department of Agriculture.






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Copyright © 1949 by the American Dairy Science Association ®.