Abstract: The internal organs were measured in Cricetulus migratorius in the same age group of different seasons or in different age groups of one season under laboratory conditions. Results indicated that the growth of liver , heart , lung , spleen and kidney with body weight was conformed to relative growth formula (RGF) of Huxley Y = b x^k (aged from newborn to 25 days of fast growth period) , liver Y = 0.013 47 x^{1.515 9} ; heart Y = 0.000 18 x ^2.163 ; lung Y =0.028 48 x ^{0.798 2} ; spleen Y = 0.000 24 x ^{1.583 6} and kidney Y = 0.000 241 8 x ^{2.310 4} , which were all highly correlated. After the age of 25 d , the growth did not conform to the Huxleys RGF formula. The testis was similar to the formula before the age of 60 d , Y = 0.000 001 08 x ^3.0494 , r = 0.989 9. The organ indexes were highest before the age of 25 d except sex organs. The sex organ indexes were relatively stable in the different ages of sexual maturing , and the other organs varied significantly in the different sex and age groups in the sexual maturing (the female index were higher than the males) . The body weight and testis indexes varied significantly in different seasons in the age of 10 months while the other organs did not. It is suggested that the age factor is an important reference index for body weight to compare organ index whether it is significant or not.

Key words: Cricetulus migratorius, Body weight, Organ index, Season

摘要： 对室内培育的灰仓鼠进行同一季节不同年龄段和同一年龄段不同季节某些器官的测量。结果显示, 在初生至25 d 的高速生长期, 体重与肝脏、心脏、肺、脾脏和肾的生长非常接近Huxley 的相对生长公式Y = b x^k , 其回归方程分别为: 肝脏Y = 0.013 47 x^{1.515 9} ; 心脏Y = 0.000 18 x^2.163 ; 肺Y = 0.028 48 x^{0.798 2} ; 脾脏Y = 0.000 24 x^{1.583 6} ; 肾脏Y = 0.000 2418 x^{2.310 4} , 并高度相关。睾丸的回归方程在60 日内与Y = b x^k公式非常拟合, Y = 0.000 0108 x^{3.049 4} , r = 0.989 9。除性腺外, 肝脏、心脏、肺、脾脏和肾脏的比值最高值均在25 d 之前。在性成熟期不同年龄段, 性腺比值较稳定, 其它器官比值在性别和年龄段有显著性差异, 雌性普遍高于雄性。在10 月龄不同季节, 只有体重和睾丸比值有显著性差异(7 月最高) , 表示在不同季节利用相近体重比较器官指数差异应将年龄因素作为重要参考依据。

关键词: 灰仓鼠, 体重, 器官指数, 季节