冷驯化对中缅树能量代谢的影响

THE EFFECTS OF COLD-ACCLIMATION ON THE METABOLISM OF ENERGY IN TUPAIA BELANGERI

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 2 8d后 ,体重比对照组显著增加 7 3 3 % ;整体能值达到 3 0 47± 0 46kJ/g (N =8) ,比对照组增加4 98% ;摄入能比对照组增加 3 6 1 7% ;同化能比对照组增加 6 6 2 % ;生长能达到 6 98±0 5 3kJ/1 0 0g (N =7)体重·天 ,是对照组的 4 85倍 ;维持能比对照组增加 6 4 0 % ,达到3 5 2 96± 2 8 3 4kJ/1 0 0g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 。

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; 485% in productive energy reaching 6.98±0.53 kJ/100 g (N=7) body weight·day; 64% 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.