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Glucose utilization in the horse

Published online by Cambridge University Press:  09 March 2007

E. J. H. Ford  and
Joan Evans
E. J. H. Ford
Affiliation:
Department of Veterinary Clinical Studies, University of Liverpool, Leahurst, Neston, S. Wirral L64 7TE
Joan Evans
Affiliation:
Department of Veterinary Clinical Studies, University of Liverpool, Leahurst, Neston, S. Wirral L64 7TE
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Abstract

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1. Total entry, irreversible loss and recycling rates of glucose were measured in four non-pregnant female Shetland ponies before and after a 24 h fast by the continuous intravenous infusion of a mixture of [U-14C] glucose and [2-3H]glucose.

2. The post-fasting fall in the concentration of glucose and the rise in the concentration of ketones in plasma were not significant.

3. After fasting, the total entry rate fell from 1·44±0·11 (n 4) to 1·19±0·12 mg/min per kg body-weight (P > 0·01) and irreversible loss fell from 1·36±0·10 (n 4) to 1·05±0·10 mg/min per kg body-weight (P > 0·02). Recycling rate did not change significantly.

4. In one pony the intravenous infusion of glucose at rates of 0·52, 1·0 or 1·64 mg/min per kg body-weight had no appreciable effect on endogenous glucose production whereas in a second pony, similarly fed, total entry was depressed by 43% and irreversible loss by 54%.

5. Irreversible loss of glucose in the horse is similar to that of many other species.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 48 , Issue 1 , July 1982 , pp. 111 - 117
Copyright
Copyright © The Nutrition Society 1982

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