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Journal of Dairy Science Vol. 25 No. 7 571-583
© 1942 by American Dairy Science Association ®
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Carotene in Calf Nutrition1

H. A. Keener and S. I. Bechdel

Department of Dairy Husbandry

N. B. Guerrant and W. T. S. Thorp

Department of Agricultural and Biological Chemistry
Department of Animal Husbandry, The Pennsylvania State College

ABSTRACT

The indispensable nature of vitamin A in the ration of dairy calves was shown by Jones, Eckles and Palmer (8) as early as 1926. Bechdel, Eckles and Palmer (1) reported similar findings the same year. Hart and Guilbert (7) found that a vitamin A deficiency developed in cattle under range conditions during unusually long seasons of dry feeding. Guilbert and Hart (4) reported that 26-33 micrograms of carotene from alfalfa per day per kilogram of body weight was sufficient to prevent or cure vitamin A deficiency in cattle. Guilbert, Miller and Hughes (5) also reported the minimum carotene requirement for cattle, sheep and swine to be between 25 and 30 micrograms per day per kilogram of body weight. The vitamin A requirement was found to be 6–8 micrograms daily per kilogram of body weight. However, data obtained by Halverson, Hostetler, Foster and Sherwood (6) indicated that the minimum daily carotene requirement of cattle was 43 to 55 I. U. per kilogram of body weight.

FOOTNOTES

1 Authorized for publication on March 4, 1942, as a paper No. 1089 in the Journal Series of the Pennsylvania Agricultural Experiment Station. The data presented in this paper are taken from a thesis submitted by Harry A. Keener to the Graduate School of The Pennsylvania State College in a partial fulfillment of requirements for the degree of Doctor of Philosophy.






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Copyright © 1942 by the American Dairy Science Association ®.