选配对公畜内回归的遗传力估计值没有影响。
Assortative mating has no influence on the heritability esmates from intra-sire regression.
本文在考虑后裔测定总费用受限或者遗传进展一定时，探讨了几种情况下的公畜（禽）后裔组的最佳值。
The optimum group size of progeny of sire (or poultry) was disscussedwhen the total cost of testing was limited or the genetic gain was fixed.
方差组分估计所用的模型为奶牛育种中常用的公畜模型，它包括场年季固定效应、公牛组固定效应和公牛随机效应。
The model used was the sire model containing herd-year-season(HYS) effect(fixed), sire group effect(fixed)and sire effect(random), which is widely used in dairy cattle breeding.
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