草原红牛主要经济性状的遗传参数估计

Estimation of genetic parameters for economic traits in red steppe

采用动物模型和DFREML,估测了1988年12月至1994年12月期间出生的1 050头草原红牛的主要经济性状的遗传参数。结果表明,草原红牛的初生重的遗传力为0.361,6个月龄体重的遗传力为0.360,18个月龄体重的遗传力为0.251,体高的遗传力为0.409,体长的遗传力为0.426,尻长的遗传力为0.561,胸围的遗传力为0.374,管围的遗传力为0.592;初生重和6个月龄体重之间的遗传相关为0.491,与18月龄体重之间的遗传相关为0.667,6个月龄体重与18月龄体重之间的遗传相关为0.556。18个月龄体重与18个月龄体尺的遗传相关在0.673～0.993范围内。

This study was genetic parameters by animal model using MTDFREML Records of performance data were obtained from 1 050 heads of red steppe breed tested at Sanjiazi breeding farm in Tongyu City Jilin Province between December 1988 and December 1994 The heritabilities of the red steppe were 0 361 for birth weight,0 360 for body weight at 6 months,0 251 for body weight at 18 months, 0 409 for withers height, 0 426 for body length, 0 561 for rump length, 0 374 for chest girth, 0 592 for shank circum The genetic correlation were 0 491 between birth weight and body weight at 6 months, 0 667 between birth weight and body weight at 18 months,0 556 between body weight at 6 months and body weight at 18 months The genetic correlation between body weight at 18 months and body measurement at 18 months were from 0 673 to 0 993