沿海滩涂低盐水体条件下大型池塘斑点叉尾鮰高效养殖技术

Efficient culture technology of channel catfish(Ictalurus punetaus)in large ponds of coastal muddy intertidal zone under low-salinity conditions

为进一步优化沿海滩涂低盐水体条件下大型池塘斑点叉尾鱼回养殖技术模式,在江苏盐城东台、大丰、射阳、连云港等地分别设置4个试验点,每个试验点选取2口池塘开展了养殖试验。采取低密度(9000~15000尾/hm^(2))放养大规格(0.25~0.30 kg)斑点叉尾鱼回鱼种的方式,加强饲养管理,投喂优质膨化颗粒饲料,并做好养殖病害防控。试验结果,各试验点斑点叉尾鱼回成鱼平均规格均在1250 g以上,平均养殖效益均超过70000元/hm^(2)。结果表明,该养殖模式可以提高养殖效益,缩短养殖周期。

For further optimizing the culture model of channel catfish(Ictalurus punetaus)in large ponds of coastal muddy intertidal zone under low-salinity conditions,four experimental sites were set in Dongtai,Dafeng,Sheyang,and Lianyungang of Jiangsu Province respectively,and 2 ponds were selected from each of four experimental sites for the culture trial.The fry of channel catfish was stocked at low densities(9000~15000 fish/hm^(2))with large initial body weights(0.25~0.30 kg).All fishes fed with high-quality expanded pellet feed and culture diseases were prevented under strengthen management.The results showed that the average body weights of adult channel catfish at experimental test sites were all above 1250 g,and the average culture benefits exceeded 70000 RMB/hm^(2).In conclusion,this culture mode both improved the culture benefits and efficiency of channel catfish.