【摘要】 为了给鲇的苗种繁育提供理论资料,作者选择性腺发育成熟的鲇鱼,采用脑垂体以及三种不同品种激素进行催产,受精卵采取环道流水孵化.结果表明:性腺发育良好的亲鱼,对催产激素要求不严,单独使用,混合使用均可;用棕榈皮制作鱼巢,可减少落地卵;在催情配组时应考虑雌、雄鲇个体大小的协调性,否则,雌鲇的产卵效率会受到影响;鲇鱼苗互相残食严重,在鲇出苗后3～5d,开口饲料质量好坏尤其重要;鲇在水温20～26℃范围内,约经48h鱼苗开始孵化出膜.更多还原

【Abstract】 For providing the theories data about artificial propagation of Silurus asotus, pituitary gland and three different species hormones procedures are employed to urge the mature Silurus asotus and adopt a flowing water to hatch zygote. The result shows: both one hormone and mix-raise can urge the mature Silurus asotus of good sex gland; the palm-tree fish nest can reduce the zygote to fall to the ground; the coordination of size for the mated male and female Silurus asotus should be considered in order to enhance the productivity of female Silurus asotus; there is severe slaughtering among the small Silurus asotus; small Silurus asotus from membrane for 3 ～ 5 days must be feed with openings animal foods of good quality; the small Silurus asotus come out from membrane about 48 hours after the water temperature is about 20 to 26℃.更多还原