兽类学报2012，Vol.32Issue(4)：297-305,9.
食物限制对黑线仓鼠能量代谢和产热的影响
Effect of food restriction on energy metabolism and thermogenesis in striped hamster (Cricetulus barabensis)
摘要
Abstract
To examine the relationship between the energy strategy in response to food restriction and the levels of metabolism in small mammals, body mass, basal metabolic rate (BMR) and nonshivering thermogenesis ( NST) were measured in striped hamsters ( Cricetulus barabensis) that were subjected to different levels of food restriction ( FR). The data showed that BMR, NST and cytochrome c oxidase activity of brown adipose tissue all were significantly decreased in FR hamsters. Eighty percent of hamsters survived for 4 weeks after being restricted to 90% of ad libitum food intake, but survival rate was 30% in hamsters restricted to 60% of ad libitum food intake. Cold-exposed hamsters had significantly increased BMR and NST, but had decreased body mass and survival rate after being restricted to 80% of ad libitum food intake compared with their counterparts maintained at room temperature. Hamsters with higher BMR consumed 23. 8% higher food than individuals with lower BMR, whereas no differences were observed in body mass and survival rate between the two groups after being restricted to 80% of ad libitum food intake. This suggests that striped hamsters characterized by higher levels of metabolism are sensitive to periods of FR, providing a support for the ' metabolism switch hypothesis'. Finally, the present study is consistent with the prediction that small mammals showing food shortage behavior may have less ability to cope with decreases in food availability.关键词
基础代谢率/体重/食物限制/黑线仓鼠/产热Key words
Basal metabolic rate ( BMR) / Body mass/ Food restriction/ Striped hamster/ Thermogenesis分类
生物科学引用本文复制引用
赵志军..食物限制对黑线仓鼠能量代谢和产热的影响[J].兽类学报,2012,32(4):297-305,9.基金项目
国家自然基金资助项目(30800130,31070367) （30800130,31070367）
山东省教育厅项目(J09LC70) （J09LC70）
