Effects of high carbohydrate and high fat diet on plasma metabolite levels and on iv glucose tolerance test in intact and neutered male cats

Journal of Feline Medicine and Surgery - Tập 6 - Trang 207-218 - 2004
S Thiess1, C Becskei2, K Tomsa3, T.A Lutz2, M Wanner1
1Institute of Animal Nutrition, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
2Institute of Veterinary Physiology, University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland
3Clinic of Small Animal Internal Medicine, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland

Tóm tắt

To elucidate the impact of dietary influence on carbohydrate and lipid metabolism and on the development of diabetes mellitus in the carnivorous cat, a 3 weeks feeding trial was carried out on six sexually intact and six neutered adult male cats. The effects of two isonitrogenic diets, differing in carbohydrate and fat content, were investigated on plasma metabolite levels in a 24-h blood sampling trial. Plasma leptin concentrations were also determined at the beginning and at the end of the 24-h trial. Glucose and insulin response was measured in an iv glucose tolerance test. A 5 days long digestion trial was also performed, which revealed a high digestion capacity of both fat and carbohydrates in cats. The high fat diet induced a significant rise in the plasma triglyceride, FFA, β-hydroxybutyrate and cholesterol concentration, while the elevation in the glucose level did not reach significance. In the glucose tolerance test no significant difference was found between the neutered and intact cats. However, independently of the sexual state, the cats on the high fat diet showed a slightly elongated glucose clearance and reduced acute insulin response to glucose administration. This is indicative of diminished pancreatic insulin secretion and/or β-cell responsiveness to glucose. The results of this preliminary study may be the impetus for a long-term study to find out whether it is rather the fat rich ration than carbohydrate rich diet that is expected to impair glucose tolerance and thus might contribute to the development of diabetes mellitus in cats. Whether the alteration in glucose metabolism is due to altered leptin levels remains to be determined.

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Thông tin xuất bản

Journal of Feline Medicine and Surgery

Tập 6

207-218

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