摘要
本文研究了黄颡鱼对4种开口饵料(对虾开口料、虾奶粉、蛋黄和浮游生物)的选择和延迟投饵对其幼鱼成活率和摄食率的影响,以揭示黄颡鱼幼鱼的生长特性。结果表明,浮游生物是黄颡鱼幼鱼最适宜的开口饵料,能极显著地促进幼鱼的生长,投喂至第22天时幼鱼体长为14.174 mm,成活率为84.36%,延迟投饵时间不能超过4 d,适宜在孵化后的前3 d投喂少量的浮游生物,第4天后可进行全饵料投喂,可使幼鱼的初次摄食率达到100%,这样既能保证幼鱼的成活率和摄食率,减少饵料的浪费,也能节约成本,保护环境。
Effects of four kinds of feed and delayed feeding on the survival rate and feeding rate of Pelteobagrus fulvidraco were studied to reveal the growth characteristics of Pelteobagrus fulvidraco.The results showed that the best diet of larva Pelteobagrus fulvidraco was plankton,which could promote the growth of P.fulvidraco significantly,while the larval body length was 14.174 mm,the survival rate was 84.36%after feeding for 22 d.Delayed feeding could exceed no more than 4 d,and it was suitable to feed a few plankton at 3 d after hatching.It could feed with full bait after 4 d,while the larval feeding rate could reach 100%.In these ways could ensure the survival rate and feeding rate of larvae,reduce the waste of bait,save the cost,and protect the environment.
作者
何国森
HE Guosen(Freshwater Fisheries Research Institute of Fujian,Fuzhou 350002,China)
出处
《渔业研究》
2019年第5期424-429,共6页
Journal of Fisheries Research
基金
2016福建省海洋与渔业结构调整专项资金
关键词
黄颡鱼
开口饵料
成活率
摄食率
Pelteobagrus fulvidraco
initial feeding
survival rate
feeding rate
