中文摘要：

动物的生命活动与光照周期息息相关,为了阐明光照对于横断山区特有种大绒鼠（Eothenomys miletus）的身体组成和消化道形态的影响。将两组动物分别在长光照和短光照条件下驯化28d,分别测定了动物的体重、身体组成,消化道器官鲜重及干重和消化道长度。实验结果表明：驯化后体重、肝脏重量、小肠与盲肠重量等指标均为短光照组低于长光照组。以上结果说明短光照可以降低大绒鼠的体重,而短光组条件下大绒鼠体重的下降可能和其身体组成和消化道形态变化有关。

英文摘要：

The life activities of animals are closely related to the light cycle. In this study, in order to elucidate the effect of light on the body composition and digestive tract morphology of Eothenomys miletus in Hengduan Mountain, two groups of animals were in long photoperiod and short photoperiod acclimatization conditions 28d. The body weight, body composition, fresh weight, dry weight and digestive tract length of the alimentary organs were meas- ured. Experimental results showed that： The body weight, liver weight, small intestine and cecum weight index af- ter domestication was lower than that of the long photoperiod group. The above results showed that short photoperi- od can reduce the weight of E. miletus. The decrease of body weight of the E. miletus in the short light group may be related to the body composition and the morphological changes of the digestive tract.