The animal gut morphology is closed related to food habit,food quality and energy demand.The seasonal changes in length and weight of total digestive tract and separate parts of digestive tract in Rattus norvegicus,which lived in add environment of Xinjiang were determined.The results showed that the length of whole digestive and small intestine and large intestine had significant seasonal variations,which were higher in spring and winter than in autumn and summer.We also discovered that the length and weight of stomach of the species captured in Alashankou region had significant seasonal variations.
[11] Bao Y X,Du W G,Li Y and Jin W X.1998.Energy metabolism and the morphology of digestive tract in Rattus niviventer confucianus and Rattus norvegicus[J].Acta Theriologica Sinica,18(3):202~207
[12] Bozinovic F,Nova F F and Claudio V.1990.Seasonal changes in energy expenditure and digestive tract of Abrothrix andinus in the Andes Range[J].Physiological Zoology,63:1216~1231
[13] Gross J E,Wang Z and Wunder B A.1985.Effect of food quality and energy needs:changes in gut morphology and capacities of Microtus ochrogaster[J].Jornal of Mammalian,66:661~667
[14] Hommond K A and Wunder B A.1991.The role diet quality and energy need in the nutritional ecology of small herbivore,Microtus ochrogaster[J].Physiological Zoology,64:541~657
[15] Schieck J O & Millar J S.1985.Alimentary tract measurements as indicators of diets of small mammal[J].Mammalian,49:93~104
[16] Wunder B A.1992.Morphophysiological indicator of the energy state of small mammals.In:Tomasi T E,Horton T A,(ed).Mammalian energetics:interdisciplinary views of metabolism and reproduction[M].Comstock Public,Association,83~104