J. Anim Sci.
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J. Anim Sci. 1971. 32:249-251.
© 1971 American Society of Animal Science
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Ascorbic Acid Requirement of Mature Horses1

M. C. Stillions, S. M. Teeter and W. E. Nelson

Theracon, Inc., Topeka, Kansas 66601

Abstract

Three mature geldings were fed pasture grass, a semi-purified diet with ascorbic acid and the semi-purified diet without ascorbic acid. The horses received the semi-purified diet without ascorbic acid for 6 months. The blood and plasma ascorbic acid levels during the feeding of the semi-purified diet without ascorbic acid were similar to that when the horses were receiving either pasture or the semi-purified diet with ascorbic acid.

The average mg % ascorbic acid in the blood and plasma when pasture, and the semi-purified diet with and without ascorbic acid were fed were 0.48, 0.40 and 0.35; 0.39, 0.40 and 0.32, respectively. Corresponding values for daily urinary excretion were 63, 278 and 248, respectively.

Footnotes

1 Financial support provided by the American Quarter Horse Association through the Morris Animal Foundation, Denver, Colorado.






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Copyright © 1971 by the American Society of Animal Science.