Glucose utilization in the horse

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 a...

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Bibliographic Details
Published in:British journal of nutrition 1982-07, Vol.48 (1), p.111-117
Main Authors: Ford, E. J. H., Evans, Joan
Format: Article
Language:English
Subjects:
animal nutrition
Animals
Blood Glucose - metabolism
Female
Glucose - metabolism
Horses - metabolism
Ketone Bodies - blood
Kinetics
Papers on General Nutrition
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Summary: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.
ISSN:0007-1145
1475-2662
DOI:10.1079/BJN19820093