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Cornell University, Ithaca, New York
Abstract
Factors affecting glucose tolerance and the effect of volatile fatty acids on plasma glucose were studied with five ponies in two 5x5 latin square trials. The treatments were equimolar infusions of glucose, acetate, propionate, butyrate and isontonic saline in fed or fasted ponies.
Animals fasted for 72 hr. exhibited a markedly lower glucose tolerance than those fed ad libitum. Propionate appeared to be the only VFA stimulating a significant glucose response in the fasted animals, but no response was noted in the fed animals. The data suggest that length of fast is an important variable in evaluating glucose tolerance in the horse, and that plasma glucose control may be mediated in part by different mechanisms than in the ruminant species.
1 Equine Research Program, College of Agriculture and College of Veterinary Medicine.
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