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自然环境中,鳜鱼繁殖时间从5月中旬至8月初。考虑到饵料鱼的供应及延长当年鳜鱼生长期,人工催产的最佳时间应安排在5月上、中旬,水温稳定在23℃以上时与四大家鱼人工繁殖交替进行,以保证鳜鱼苗有充足的适口饵料鱼供应。现就鳜鱼的人工繁殖方法介绍如下: 一、人工催产 1.亲鱼的选择在催产前1天将亲鱼捕起,放入网箱中暂养1晚,使其消化
In natural environment, catfish reproduction time from mid-May to early August. Taking into account the supply of fish and fish to extend the current period of growth, the best time for artificial breeding should be arranged in May, mid-water temperature stability at 23 ℃ above the artificial reproduction of the four major domestic fish alternate to ensure that the catfish Adequate palatability fish supply. Artificial breeding methods are now described as follows: First, the artificial oxytocin 1. The choice of broodstock One day before the abortion will catch the broodstock, put it in a cage for 1 night, let it digest