澳洲龙纹斑库区网箱养殖试验

The study on the reservoir area cage-culture of Murray cod, Maccullochella peelii peelii

放养平均全长(13.30±1.21)cm、平均体重(20.41±3.81)g的澳洲龙纹斑鱼种进行水库网箱养殖试验。试验期水温为7.4~27.6℃,投喂粗蛋白为48.9%的定制人工配合饲料,经26个月饲养,平均体重达到(1618.04±24.33)g,平均全长达到(46.30±5.26)cm,饲料系数为1.53。澳洲龙纹斑体重和全长的最优回归方程为幂函数方程W=0.003 L 3.394。以Von Bertalanffy非线性生长模型测算得出澳洲龙纹斑的拐点体重为756.7 g,拐点全长为13.7 cm,其拐点试验时间分别为12.1个月和1.4个月。试验结果表明澳洲龙纹斑适合库区网箱养殖。

The Murray cod,Maccullochella peelii peelii(Mitchell),were reared in the reservoir area under the condition of cage-culture.The initial average body weight of juvenile Murray cod was(20.41±3.81)g,and the average total length was(13.30±1.21)cm.The water temperature ranged between 7.4℃and 27.6℃during the experiment.The fish was fed with customized artificial formula feed,whose crude protein content was 48.9%.After 26 months of cultivation,the average body weight and total length reached to(1618.04±24.33)g and(46.30±5.26)cm,respectively,and the feed coefficient was 1.53.The optimal regression equation for the body weight and total length of Murray cod was W=0.003 L 3.394.According to the Von Bertalanffy s non-linear growth model,the growth inflection point of body weight was 756.7 g,the growth inflection point of total length was 13.7 cm,the test time of the growth inflection point was 12.1 months and 1.4 months,respectively.The results showed that reservoir area cage-culture can be adapted to Murray cod.