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随着家鱼人工繁殖工作的不断深入和普及,在生产中又发现了一些新的问题,需要人们通过实践不断地总结、分析和认识,以便更好地推动养鱼事业的发展。现把家鱼人工繁殖中的一些问题的粗浅认识整理如下,供有关同志参考,不当之处请大家提出批评意见。 一、家鱼的一年多次催产 近几年来,广东、湖北等地有同一尾草、鲢、鳙成熟亲鱼,一年可产卵2—3次,故有认为草、鲢、鳙是属于一年两次产卵类型,也有认为草鱼长到3—4寸以上容易
With the continuous deepening and popularization of artificial breeding of domestic fish, some new problems have been discovered in production, which require people to summarize, analyze and understand constantly in order to better promote the development of fish farming. Now the artificial breeding of fish in the superficial understanding of some of the problems as follows, for the comrades for reference, inappropriate comments please everyone. First, the fish many times a year urging recent years, Guangdong, Hubei and other places have the same tail grass, silver carp, 鳙 mature broodstock, spawning 2-3 times a year, so that grass, silver carp, 鳙 belong to Spawning types twice a year, there are also that grass carp grow to 3-4 inches more easily