论文部分内容阅读
对鳜鱼在水库网箱养殖中的生长发育进行试验 ,分析养殖经济效益。结果表明 ,将当年早繁鳜鱼种 (大规格 )于 6月底前进箱 ,年底 90 %可以达到商品鳜 ;养殖中 ,饵料鱼的规格不应超过鳜鱼体长的 50 %~55%,饵料鱼不足或过大都会影响鳜鱼采食 ,降低成活率 ;网箱养殖鳜鱼操作方便 ,投入少见效快 ,是一种适宜水库、湖泊等大水面综合开发利用的有效养殖模式
The test was made on the growth and development of the bighead carp in the cage culture of the reservoir and the economic benefits of breeding were analyzed. The results showed that the year earlier species of catfish (large size) into the box by the end of June, 90% of the end of the year can reach the commercial products; fish farming in the specifications should not exceed 50% to 55% of the body length of the fish, bait Lack of fish or too large will affect catfish feeding, reducing the survival rate; cage culture catfish easy to operate, less effective and quick investment, is a suitable reservoir, lake and other large surface water comprehensive development and utilization of effective breeding mode