Abstract: The metabolism of energy was determined in tree shrew ( Tupaia belangeri) under cold acclimation condition at 5 ±1 ℃. After 28 d of cold-acclimation , as compared to the control group, the body weight and energy metabolism of the tree shrews were significantly increased, i.e., 7.33 % in body weight; 4.98 % in caloric value of body reaching 30.47 ±0.46 J / g ( N = 8) ; 36.17 % in consumption ; 66.2 % in assimilation; 4.85 % in productive energy reaching 6.98 ±0.53 kJ / 100 g ( N = 7) body weight·day ; 64.0 % in maintenance energy reaching 352.96 ±28.34 kJ / 100 g body weight·day ( N = 7). The results indicated that tree shrews enhanced the capacity of adaptation to cold temperatures by increasing their body weight, consumption, energy intake, maintenance energy, assimilation and productive energy while decreasing physiological mechanisms such as excretion in faeces and urine under cold stress environment. In this way they could maintain the balance in their energy metabolism.

Key words: Tree shrew ( Tupaia belangeri), Cold-acclimation, Metabolism of energy, Capacity of adaptation

摘要： 在5 ±1 ℃条件下对中缅树鼠句进行冷驯化处理, 测定其能量代谢。冷驯化28 d 后, 体重比对照组显著增加7.33 %; 整体能值达到30.47 ±0.46 kJ / g (N = 8) , 比对照组增加4.98 %; 摄入能比对照组增加36.17 %; 同化能比对照组增加66.2 %; 生长能达到6.98 ±0.53 kJ / 100 g (N = 7) 体重·天, 是对照组的4.85 倍; 维持能比对照组增加64.0 % , 达到352.96 ±28.34 kJ / 100 g 体重·天(N = 7) 。以上结果表明中缅树鼠句在冷胁迫影响下, 以增加能量摄入、能量储存和维持能和降低排泄能量的生理机制来维持能量代谢平衡, 以此对策来提高低温环境适应能力。

关键词: 中缅树鼩, 冷驯化, 能量代谢, 适应能力