池塘培育鲶鱼苗种高产技术

High-yield Technique for Breeding of Catfish(Silurus asotus L.)in Ponds

0 13hm2 池塘放养规格为 1g的土鲶 (Silurusasotus)夏花鱼苗 ,密度 5 2 5万尾 /hm2 。经 10 8d饲养 ,平均规格 2 75g,产量 7416kg/hm2 ,饵料系数 2 81,利润 9 5 6万元 /hm2 ,投入产出比 1∶2 5 ,出塘率 5 1 3%。

The summer fingerling of catfish(Silurus asotus L.)was cultured in 0.13 hm 2 pond by stocking density of 5.25×10 4 fry per hm 2.After raising 108 days,the individual average weight increased from 1 g to 275 g;the output was 7416 kg/hm 2;food coefficient was 2.81;the profits was 9.56×10 4 yuan/hm 2;the ratio of input and output was 1∶2.5;the survivalrate was 51.3%.