Abstract: Samples were obtained from Dalian Ming Wei Marten Industry Company, based on 1686 sliver blue mink of six generation from 2005 to 2011. The phenotypic trends of body weight, body length, guard hair length, under fur length, and the rate of two hairs were analyzed by year and sex. Genetic parameter of growth and fur traits in the sliver blue mink was estimated with multi-traits animal model. The fixed effects, which were included the year, sex effects and the animal additive genetic effects were calculated. The results showed as following: Heritability estimates for body weight body length, guard hair length, under fur length and the rate two hair lengths was 0.41, 0.53, 0.53, 0.52 and 0.52. Except for the phenotypic correlation between the rate of two hair lengths and body weight, body length, guard hair length and under fur length were negatively (-0.218,-0.178, -0.074,-0.425), among the other four traits were positively (0.289, 0.882, 0.869, 0.806, 0.788, 0.930). The genetic correlation between body length and under fur length and the rate of two hair length were negatively (-0.941, -0.983), others were positively (0.983, 0.731, 0.972, 0.981, 0.622, 0.992, 0.641, 0.987).

Key words: sliver blue mink; growth trait; fur trait; genetic parameter