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Effects of Cryopreservation on Motility and Viability of Sperm of Amur Sturgeon (Acipenser schrencki
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As a genetic parameter, heritability has taken part in an important role in animal and plant genetic breeding.In ord......
试验以3日龄种鸡胚蛋为实验材料，通过在小头抽取不同量的蛋清和在大头顶端开3种直径分别为0．5、1．0、1．5em圆孔的方法对3日龄鸡胚原壳......
