水库网箱养殖杂交鳢“杭鳢1号”高产试验

High Yield Trial on Cage Culture of Hybrid Snakehead ‘Hang Channa No.1’in a Reservoir

水库网箱养殖杂交鳢"杭鳢1号",2010年7月在网箱中放养尾质量8.4g"杭鳢1号"鱼种,经170d饲养,平均尾质量达372.5g;2010年底进行成鱼放养,网箱面积200m2,投入尾质量376.3g鱼种20 700尾,经一年饲养,净产成鱼19 196kg,最高单产102.3kg/m2,平均单产95.98kg/m2,最大个体2650g,平均尾质量1573.4g,成活率82.0%,投入产出比1∶1.74。

Hybrid snakehead ＇ Hang Channa No. 1＇ fingerlings with body weight of 8.4 g were stocked into net cages disposed in a reservoir in July of 2010, and reared for 170 days when the fingerlings had average body weight of 372.5 g. Then total of 20 700 fish with average body weight of 376.3 g were stocked into a 200 m2net cage in December, 2010. In one growth season, net yield of 19 196 kg was obtained, with the maximal yield of 102.3 kg/mz, and average yield of 95. 98 kg/mz. The hybrids had the maximal body weight of 2650 g, with average body weight of 1573.4 g, and survival rate of 82%. There was a ratio of output to input =1： 1.74 in reservoir ca^e culture of‘Hang Channa No.1＇