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Importance of Vitamin A and D Supplement for Young Calves Fed Skimmilk

University of Tennessee, Knoxville

Abstract

Two matched groups of 41 Jersey and Holstein calves were used to compare the effects of feeding reconstituted skimmilk with and without vitamin A and D. A calf starter which was supplemented with 2721 units of vitamin A and 340 units of vitamin D₂ per pound was fed to both groups up to a maximum of 4 pounds per calf daily to 70 days of age. No difference in growth rates resulted from the milk supplementation. A very slight effect was noted on blood plasma vitamin A up to 5 weeks, but both groups were within ranges considered adequate. No effect of vitamin D supplementation was observed as measured by bone ash at different ages. The results indicate that when a starter is used which contains sufficient vitamin A and D, that skimmilk or milk replacers need not be supplemented with these vitamins on a limited-milk, calf starter and hay feeding program.

¹ Department of Dairying.

² Present address, Asst. Extension Dairyman, Miss. State University, State College, Mississippi.

³ Present address, Dairy Dept., Michigan State University, East Lansing, Michigan.

⁴ The authors wish to thank M. Hochberg, Nopco Chemical Co., Harrison, N. J., and H. D. Simpson, American Cyanamid Co., Princeton, N. J. for providing vitamin supplements and aureomycin used in these experiments.