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首页> 外文期刊>Aquaculture International >The effect of initial stocking density on growth and survival of pike-perch fingerlings reared under intensive conditions
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The effect of initial stocking density on growth and survival of pike-perch fingerlings reared under intensive conditions

机译：初始放养密度对高强度条件下养殖的鲈鱼鱼种生长和存活的影响

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Pond-nursed pike-perch (Sander lucioperca) fry were trained to artificial diet and reared under controlled conditions maintained in aquaria using three stocking densities (1.25, 1.66 and 2.08 g/l). Two replicates per treatment were applied. The survival during the 4-week period of the experiment ranged from 44.2 to 49.6%. The majority of the losses were caused by cannibalism; only 8-14% could be attributed to natural mortality. Both cannibalism and natural mortality occurred in the first 2-3 weeks of rearing. The differences in the rate of cannibalism were independent of the stocking density. Natural mortality decreased with increasing density, consequently the highest survival was observed under the highest stocking density. Stocking density did not significantly influence growth, feed consumption and feed conversion ratio of the pike-perch fingerlings (p < 0.05).
机译：对池塘饲养的鲈鱼（Sander lucioperca）鱼苗进行人工饮食训练，并在受控的条件下使用三种放养密度（1.25、1.66和2.08 g / l）在水族箱中饲养。每种处理重复两次。实验4周期间的生存率介于44.2至49.6％之间。大部分损失是由于食人行为造成的;自然死亡仅占8-14％。在饲养的前2-3周，食人和自然死亡率均发生。食人率的差异与放养密度无关。自然死亡率随密度增加而降低，因此在最高放养密度下观察到最高存活率。放养密度对梭鲈鱼种的生长，饲料消耗和饲料转化率没有显着影响（p <0.05）。

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