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Journal of Dairy Science Vol. 50 No. 3 362-370
© 1967 by American Dairy Science Association ®
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Effect of Diet on Glucose Tolerance of Dairy Calves One to Thirteen Weeks Old1

Harry W. Colvin, Jr.2, John T. Attebery3 and Lathan B. Daniels

Department of Animal Industry and Veterinary Science, University of Arkansas, Fayetteville

ABSTRACT

Sixteen male Holstein-Friesian calves, three to four days old, were placed on one of four diets (four calves per diet) for a 13-wk experimental period. The diets included the following: Diet 1, milk and milk solids; Diet 2, milk and grain; Diet 3, milk, grain, and hay, inoculated (rumen ingesta from a mature cow introduced via stomach tube into the rumen of an experimental calf); and Diet 4, milk and grain, inoculated. Once each week after a 12–14 hr fast, 750 mg glucose/kg body weight were administered intravenously to each calf for a glucose tolerance test. Calves on Diet 1 had a constant glucose tolerance over the experimental period; a gradual decline in glucose tolerance was observed for calves on Diets 2 and 4; and calves on Diet 3 had a sharp decline. There may have been a slight difference in glucose tolerance between the calves of Diets 2 and 4. It was concluded that glucose tolerance of calves is dependent upon diet and the nature of the rumen fermentation activity.

FOOTNOTES

1 Published with the approval of the Director of the Arkansas Agricultural Experiment Station.

2 Present address: Department of Animal Physiology, TTniversity of California, Davis, California.

3 Present address: Department of Dairy Husbandry, University of Missouri, Columbia, Missouri.






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Copyright © 1967 by the American Dairy Science Association ®.