斑点叉尾鲴亲鱼池塘培育试验

The Experiment in Brood Stock Culture of Ictalurus punctatus in Earth Pond in North China

亲鱼培育是繁殖成功的关键。通过定时冲水刺激,有规律地敷设产卵巢,适时投喂鲜鱼等强化培育,斑点叉尾(鱼回)亲鱼在北方池塘顺利产卵,培育期221d.初次产卵产卵率为8%,每公斤体重怀卵量4000～6000粒。

Brood fish management is the most important technique for successspawning,Experiments of brood fish of Ictalurus Pucetatus cultured in earthpond were carried out,In North China,the fish would lay eggs when thequality controlled water was placed in spawning containers into pond ontime and under an adequate fish supply was provided during the period of221 days.The percentage of females spawning was 8 percent and egg productionwas 4000 to 6000 eggs/kg body weight.