因子与巢式交配设计群体近交率的比较研究

探讨了因子和巢式交配设计群体近交率的形成机理，结果表明，这两种交配设计群体结构本身并不导致基近交率累积的差异。在育种选择情况下因子交配设计比巢式设计群体的近交率上升慢，而在完全随机留种和限制随机种情形这两种酱地群体近交率的影响没有差异，但在交配设计情况下，限制随机留种比完全随机留有有交地控制群体近交率的提高。这一结果显示，在动物的家畜遗传留种比完全随机留各 效地控制群体近交率的提高。这一结果显示，

Comparison of Inbreeding Rates between factorialand Nested mating System

he effect of factorial and nested mating systems on the rates of inbreeding areconsidered for the animal breeding and genetic resounes conservation schemes. In thebreeding selection population, result showed that the new inbreeding for factorialmating system is less than nested mating system. Howevet, in the Fopulations ifcomplete random selecting Parents and restriction on the random selecting parents there are no differences of the new inbreeding for two mating systems.Under themating systems,the new inbreeding for restriction on the random selecting Parents isless than complete random selecting parents.This result indicated that apart fromconsidering the size of animal genetic resources conservation population and ratio offemales and males, the mating system and method of properiy selecting parents shouldbe adopted so as to decrease the rate of inbreeding in practice.