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大银鱼是我国一种经济价值很高的名贵鱼类，在自然条件下受精率很低，一般在10％左右．为满足水库移植、增殖的需要，有必要进行人工授精，提高大银鱼的受精率、孵化率，根据这几年采卵的实践，参考有关资料，总结如下：1选择优质活体亲鱼经小型拖网或单层刺同采捕到的亲鱼，不
Big whitebait is a valuable fish with high economic value in our country. Under natural conditions, the fertilization rate is very low, generally about 10%. In order to meet the needs of reservoir transplanting and multiplication, it is necessary to carry out artificial insemination and improve the fertilization rate and hatching rate of big whitebait. According to the practice of ovipositing in recent years, the related data are summarized as follows: 1 Select high quality live broodstock by small trawling Or single-sting with the parent fish caught, no