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在异育银鲫人工繁殖操作规定中必须对每条待产的雌性亲鱼进行药物催产注射,这样不但需要药物费用开支,而且操作麻烦,同时要摘取大量的鱼脑垂体确有困难。在1982～1983年的异育银鲫繁殖过程中,我们发现繁殖季节里异育银鲫亲本在培育池中有流产现象,且在流水孵化槽中末注射待产的亲鱼亦出现有排卵情况,鉴于以上情况,为简化异育银鲫催产方法,1984年进行了异育银鲫一次注射催产、二次注射催产和流水刺激催产的试验。一、材料与方法: 1、材料:鹅颈洲渔场苗种队一号培
In the artificial breeding of allogynogenetic crucian carp, every female broodstock to be produced must be injected with drug oxytocin. This not only requires drug expenses but also troublesome operation, and it is difficult to extract a large amount of fish pituitary gland. During the breeding process of allogynogenetic crucian carp (Carassius auratus gigas) from 1982 to 1983, we found that there were abortions in the breeding ponds during the breeding season, and there was also an ovulation in the broodstock, In the above situation, in order to simplify the method of oxytocin production of allogynogenetic crucian carp, a test was conducted in 1984 in which one injection of heterotrophic crucian carp was induced by oxytocin, secondary injection of oxytocin and flow-through stimulation of oxytocin. First, materials and methods: 1, material: goose neck Island fisheries seedlings team training