Genetic analyses had been carried out on reproduction and production traits both Zhenghong and Yiyang farm of Hunan. Multi-traits animal model BLUP and MTDFREML were used to estimate variance and covariance of estimate breeding value(EBV), additive effect, maternal effect, maternal permanent environmental effect, common litter effect, and residual effect on 4061 records of reproduction traits from 1998 to 2003, and 1171 records of production traits from 2000 to 2003 .The traits were analyzed including total...