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首页> 外文期刊>African Journal of Biotechnology >Estimation of genetic parameters for economic important traits in Moghani Iranian sheep
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Estimation of genetic parameters for economic important traits in Moghani Iranian sheep

机译：伊朗Moghani绵羊经济重要性状的遗传参数估计

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摘要

Moghani sheep breed is one of the most important meat type breeds among Iranian local sheep.?The objective of this contribution was to estimate direct and maternal genetic variance as well as covariance between direct and maternal additive genetic effects. Maternal permanent environmental variance was also estimated. The following traits were studied: Birth weight (BW), average daily gain until three months (ADG3) and average daily gain until 6 months (ADG6). Genetic parameters were estimated for conception rate (CR), number of lambs born per ewe lambing (LS), number- of lambs born alive (NLBA), number of alive lambs at weaning (NLAW), litter mean weight per lamb born (LMWLB) and litter mean weight per lamb weaned (LMWLW). Three single trait linear animal models have been employed to estimate genetic parameters for production traits and one mixed model method used to analyze reproduction traits included fixed effects due to year, age of ewe and hormone treatment and also random effects due to animal direct and maternal genetic effects, permanent environmental effects due to repeated lambing by ewes and residual effects. Data were analyzed by restricted maximum likelihood method (REML).
机译：Moghani绵羊品种是伊朗当地绵羊中最重要的肉类品种之一。此贡献的目的是评估直接和母体遗传变异以及直接和母体加性遗传效应之间的协方差。孕产妇永久性环境差异也被估计。研究了以下特征：出生体重（BW），直到三个月的平均日增重（ADG3）和直到六个月的平均日增重（ADG6）。估计遗传参数，包括受胎率（CR），每只母羊羔羔出生的羔羊数（LS），活产羔羊的数量（NLBA），断奶时活产羔羊的数量（NLAW），每胎产羔的平均产仔数（LMWLB） ）和每窝断奶仔猪的平均体重（LMWLW）。已使用三种单性状线性动物模型来估计生产性状的遗传参数，一种用于分析生殖性状的混合模型方法包括由于年份，母羊年龄和激素处理引起的固定效应，以及由于动物直接和母体遗传产生的随机效应。影响，由于母羊反复产羔而造成的永久性环境影响和残留影响。通过限制最大似然法（REML）分析数据。

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