长吻鮠养殖技术讲座（二）第二讲人工繁殖１．亲鱼人工繁殖用的亲鱼来源有三：一是在繁殖季节从江河天然产卵场及其邻近江段选购渔民用网具或小滑钩捕获的，体重在３千克以上的鱼，根据其性腺发育情况、伤势轻重和当时的水温、气候条件，能催产的立即催产，不能催产的可在... Long-necked 鮠 breed aquatics seminar (2) Lecture on artificial breeding 1. There are three sources of broodstock for artificial reproduction of broodstock: first, fish of more than 3 kg in weight that were caught by fishing nets or skimmers from the natural spawning grounds of the river and adjacent river sections during the breeding season, according to their gonadal development Situation, the severity of injuries and the prevailing water temperature, climatic conditions, can immediately oxytocin oxytocin, can not oxytocin in ...