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The Effect of Vitamin A and Certain Members of the B-Complex upon Calf Scours¹

Departments of Biochemistry and Dairy Husbandry, University of Wisconsin, Madison, Wisconsin

ABSTRACT

Conclusions: These studies indicate that the calf diarrhea encountered was largely nutritional in origin. The administration of high vitamin A potency shark liver oil and certain members of the vitamin B complex eliminated the diarrhea and the resulting mortality from pneumonia. Preliminary evidence would suggest that nicotinic and pantothenic acids may be the factors of the B complex which were lacking.

New-born calves were found to be amply fortified with ascorbic acid but they were uniformly deficient in vitamin A. The ingestion of colostrum milk rich in vitamin A quickly brought about normal blood plasma levels. The ration of the dam only slightly influenced the amount of vitamin A found in the blood plasma of the new-born calf. Winter rations tend to reduce it while rations with ample carotene or fortified with vitamin A tend to raise it. Low ascorbic acid values in the blood plasma were increased by feeding shark liver oil rich in vitamin A.

¹ Published with the approval of the direetor of the Wisconsin Agricultural Experiment Station. These studies were supported in part by a grant from the Wisconsin Alumni Eesearch Foundation.