DIETARY MODIFICATIONS OF COLD-INDUCED METABOLIC EFFECTS.
Summary rept. for 15 Jan-1 Apr 65,
ARCTIC AEROMEDICAL LAB FORT WAINWRIGHT ALASKA
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Cold-exposed male Sprague-Dawley rats were forced to obtain their extra caloric requirements from either carbohydrate sucrose or fat Crisco. Rats were killed, one, four and eight weeks after initiation of the feeding regimen. Carcass fat, protein, and moisture analyses were made. Liver glucose-6-phosphatase G-6-Pase, hexose monophosphate HMP dehydrogenase, and glycogen were assayed. At the end of four weeks and eight weeks the percentages of fat in the carcasses of rats were significantly higher than in the cold-exposed rats receiving a mixed complete diet ad libitum. The two enzymes studied showed differing responses, HMP dehydrogenase increasing as a result of higher input of carbohydrate in the cold, and G-6-Pase increasing as an apparent result of cold exposure per se. Author
- Anatomy and Physiology
- Stress Physiology