关键词: 灰仓鼠, 体重, 器官指数, 季节

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