光周期对黄金鲈鱼生长的影响

Effects of photoperiod on the growth of yellow perch Perca flavescens

在16L∶8D和自然光照(Amb)两种光周期条件下养殖黄金鲈鱼,观察其体重增长及饲料转化情况。养殖试验结果发现经过5个月的饲养,黄金鲈鱼在16L∶8D的光周期下鱼体总重量的净增量是自然光周期下的2.90倍,饵料系数比自然光照条件下低54.8%。结果表明适当延长光照时间可以促进黄金鲈鱼的生长,降低饵料系数。

Yellow perch Perca flavescens was reared under 16L：8D light cycle and Amb photoperiod, respectively, and its growth and feed conversion were observed. The results showed that the biomass of yellow perch which was reared under the 16L：8D photoperiod is 2.90 times compared to that under Amb photoperiod, and the feed parameter was lower, and decreased to 54.8% of the latter. Longer photoperiod appropriately could stimulate the growth of yellow perch, and reduced its feed parameter.