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首页> 外文期刊>Revista Caatinga >GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING
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GENETIC PARAMETERS FOR GROWTH TRAITS OF SANTA INES SHEEP USING GIBBS SAMPLING

机译：吉布斯采样的圣山绵羊生长性状的遗传参数

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This study sought to estimate (co)variance and genetic parameters for birth weight (BWT) and weaning weight (WWT) in Santa Ines sheep. A total of 2,111 records were obtained from EMBRAPA/CPATC experimental herds, dating from the years 1998 to 2008. (Co)variance parameters were obtained through a two - trait analysis with the Gibbs sampling algorithm using the MTGSAM program. The mixed model included the environmental effects of sex, contemporary group and type of birth, in addition to residual, direct and maternal additive effects. Mean estimates of direct heritability for BWT and WWT were 0.25 and 0.09, respectively. Mean estimates of maternal heritability were 0.34 for BWT and 0.24 for WWT. The genetic correlation be- tween BWT and WWT was 0.14. The results suggest that breeding Santa Ines sheep for meat production must take into consideration direct and maternal additive genetic effects.
机译：这项研究旨在估计圣伊内斯绵羊的出生体重（BWT）和断奶体重（WWT）的（协）方差和遗传参数。从EMBRAPA / CPATC实验群中获得了总计2,111条记录，其日期为1998年至2008年。（协）方差参数是通过使用MTGSAM程序使用Gibbs采样算法进行的两性状分析获得的。混合模型还包括性别，当代群体和出生类型的环境影响，以及残余，直接和母亲的加性效应。 BWT和WWT直接遗传力的平均估计分别为0.25和0.09。产妇遗传力的平均估计值是BWT为0.34，WWT为0.24。 BWT和WWT之间的遗传相关性为0.14。结果表明，为生产肉类而生产圣塔伊内斯绵羊必须考虑直接和母体加性遗传效应。

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