Nine half-dam families and 34 full-sib families were established by nest design using one female parent mated to four male parents. Nineteen of 34 full-sib families were raised under (℃. Phenotypic variance components under different period were calculated with the GLM procedure of SPSS software. The estimated narrow-sense heritabilities were 0.413–0.675 for body weight and 0.297–0.777 for body length under low temperature, while those were 0.396–0.558 and 0.194–0.624 for body weight and body length respectively under high temperature. All of them were relatively high. Variance components between female parents were larger than those between male parents for each growth trait, indicating that large maternal effect or other non-additive genetic effects exist, and heritability estimation of variance components between male parents were relatively unbiased. The estimates of narrow-sense heritability under low temperature were larger than that under high temperature, suggesting that G×E interaction existed and phenotypic selection under low temperature could result in better effect. Genetic and phenotypic correlation of body weight and body length was extremely significant under different temperature and in different growth periods (<0.01). The estimates of genetic correlation were 0.7940.939 and those of phenotypic correlation were 0.8150.939. Relatively high heritability estimates and positive genetic correlation indicate that growth traits of could be improved favorably through selection either on body weight or on body length.