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研究了鲻鱼仔鱼的开始摄饵时间和食性转变;仔鱼、轮虫和浮游植物的初始放养密度以及强化饵料生物的有效性.观察孵化70h后的仔鱼,发现其消化道里有轮虫.孵化84h后的投喂和未投喂的仔鱼,两者的全长有显著不同(P<0.01).未投喂的仔鱼,在孵化192h后全部死亡.试验说明,应在仔鱼孵化后的第2天开始投喂轮虫,这样可以使轮虫在水中适当繁殖.首次摄食的仔鱼分析表明,其消化道中的食物成分与水中发现的饵料生物相似.投喂强化卤虫或轮虫的仔鱼,其生长比投喂未经强化的卤虫或轮虫的仔鱼明显地快(P<0.05).仔鱼初始放养密度和存活率成反比(r=-0.58,P<0.01).最佳的初始放养密度,仔鱼为10～20尾/L.轮虫为5～10个/ml.浮游植物为50～70万个/ml.
The initial larval time and food conversion of anchovy larvae, the initial stocking density of larvae, rotifers and phytoplankton, and the effectiveness of enhancing food organisms were studied.The larvae in the digestive tract were observed after larvae hatched for 70 h.The hatching was performed for 84 h (P <0.01) .Non-fed larvae all died after 192h incubation.The experiment shows that the larvae should be fed on the second day after larval hatching The rotifer was started by feeding rotifer, which allowed the rotifera to multiply properly in water.The analysis of first-filmed larvae showed that the composition of the food in the digestive tract was similar to that found in water, and the growth of larvae fed with fortified Artemia or rotifers (P <0.05) .The larval stocking density was inversely proportional to the survival rate (r = -0.58, P <0.01) .The optimum initial stocking density, Larvae of 10 to 20 / L. Rotifera 5 to 10 / ml of phytoplankton 50 to 700 000 / ml.