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Genetics and non-genetics parameters of body weight for post-weaning traits in Raini Cashmere goats

机译：瑞尼山羊绒断奶后性状体重的遗传和非遗传参数

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摘要

Genetic parameters were estimated for 6-month weight (W6), 9-month weight (W9), 12-month weight (W12), average daily gain from birth to 6 months old (ADG6), and Kleiber ratio at 6 months (KL6) traits using 6,442 records obtained from a Raini Cashmere goat flock. The parameters were estimated using the restricted maximum likelihood procedure and applying four animal models excluding or including maternal additive genetic and permanent environmental effects. Heritability estimates for W6, W9, W12, ADG6, and KL6, under the most appropriate model were 0.028, 0.26, 0.29, 0.02, and 0.25, respectively. The estimates of genetic and phenotypic correlations among W6, W9, W12, and ADG6 were high and ranged from 0.73 to 0.99. The estimates of genetic and phenotypic correlations among KL6 and others traits were negative and low. Thus, these estimates of genetic parameters may provide a basis for deriving selection indices for postweaning growth traits also low genetic correlation between growth traits with KL6, it is possible to increase efficiency in Raini kids by multitrait selection.
机译：估计了6个月体重（W6），9个月体重（W9），12个月体重（W12），从出生到6个月大的平均日增重（ADG6）和6个月时的Kleiber比率（KL6）的遗传参数）性状，使用从Raini开士米山羊羊群获得的6,442条记录。使用限制最大可能性程序并应用四种动物模型（不包括或包括母体加性遗传和永久环境影响）来估计参数。在最合适的模型下，W6，W9，W12，ADG6和KL6的遗传力估计分别为0.028、0.26、0.29、0.02和0.25。 W6，W9，W12和ADG6之间的遗传和表型相关性估计很高，范围为0.73至0.99。 KL6和其他性状之间的遗传和表型相关性的估计是负和低。因此，这些遗传参数的估计可以为断奶后生长性状的选择指数提供基础，并且与KL6的生长性状之间的遗传相关性较低，可以通过多性状选择提高雷尼儿童的效率。

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