CAJ | 학술논문

为阐明体重和能量代谢的生理调节对动物适应食物短缺的作用和意义,将成年KM小鼠按自由取食量的75%和50%随机限食四周,再重喂食四周.分别测定了摄食量、基础代谢率（BMR）和脂肪含量.限食75%和50%使BMR和消化道重量显著增加,体重、胴体重、脂肪含量显著降低;重喂食后,BMR和体重恢复到对照组水平,脂肪含量显著高于对照组.结果表明,动物通过能量代谢和体重调节以适应不同程度的食物资源短缺的应激环境,通过增加身体能量贮存以增强应对食物短缺的适应能力.
위천명체중화능량대사적생리조절대동물괄응식물단결적작용화의의,장성년KM소서안자유취식량적75%화50%수궤한식사주,재중위식사주.분별측정료섭식량、기출대사솔（BMR）화지방함량.한식75%화50%사BMR화소화도중량현저증가,체중、동체중、지방함량현저강저;중위식후,BMR화체중회복도대조조수평,지방함량현저고우대조조.결과표명,동물통과능량대사화체중조절이괄응불동정도적식물자원단결적응격배경,통과증가신체능량저존이증강응대식물단결적괄응능력.
The present study aimed to examine the significance and the role of physiological regulations of body mass and energy budget in small mammals in the adaptation to variations of food availability.Adult male KM mice were stochastically restricted to 75% and 50% of ad libitum food intake for four weeks and then refed ad libitum for another four weeks.Body mass,food intake,basal metabolic rate（BMR） and body composition were measured.Food-restricted mice increased BMR and the weight of gastrointestinal tracts,but decreased body mass,carcass mass,body fat content compared with controls.After 4 weeks of refeeding,BMR and body mass recovered to the levels of controls,whereas body fat content was significantly higher than control mice.These finding may suggest that the physiological regulations in energy budget and body mass are employed by small mammals to meet the environmental stress caused by different stochastic food restriction.Animals are able to increased fat storage when food is plentiful and then increase the capability to cope with lower food availability.