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Journal of Dairy Science Vol. 34 No. 11 1070-1072
© 1951 by American Dairy Science Association ®
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Influence of the Ration on the Excretion of Certain Vitamins by Ruminants1

A. E. Teeri, D. Josselyn, N. F. Colovos and H. A. Keener

New Hampshire Agricultural Experiment Station, Durham

ABSTRACT

The low quality, with respect to nieotinic acid and riboflavin, of late-cut hay, was reflected in the decreased excretion of these vitamins by cows fed the hay. For the other rations fed, nieotinic acid excretion was unaffected, while the excretion values for riboflavin indicated that silage, and possibly cane molasses, favor the rumen or intestinal synthesis of this vitamin. Bumen synthesis of thiamine probably is of considerable importance in ruminant nutrition, and the feeding of silage appears to favor this synthesis.

FOOTNOTES

1 Scientific contribution no. 142 of the New Hampshire Agricultural Experiment Station.






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Copyright © 1951 by the American Dairy Science Association ®.