眼斑拟石首鱼仔鱼对微粒子配合饲料的摄食效果

对3—8日龄的眼斑拟石首鱼仔鱼分别投喂轮虫、新研制的微粒子饲料（MDA）和商品用微粒子饲料（MDB）．结果表明，轮虫组仔鱼的存活率最高（56．0％），其次是MDA组（15．5％），最低为MDB组（1．2％），无给饵仔鱼至8日龄全部死亡．各组仔鱼的生长并无显著差异．随后对10-20日龄的仔鱼分别投喂轮虫、MDA、MDA＋1／3轮虫和1／3轮虫，MDA＋1／3轮虫组仔鱼的存活率和平均全长明显优于1／3轮虫组．研究认为，MDA可作为眼斑拟石首鱼仔鱼阶段所用的生物饵料轮虫的部分替代品．

Preliminary Results on Red Drum Sciaenops ocellatus Larvae Reared with Microparticle Diets

This study was conducted to rear red drum Sciaenops ocellatus larvae with a newly developed microparticle diets(MDA).First,red drum Sciaenops ocellatus larvae were fed from 3 days after hatching(d.a.h.) to 8 d.a.h.on rotifers,MDA and commerial micropaticle diet(MDB),respectively.The larvae fed on rotifers had the highest survival rate(56.0 %),followed by the MDA(15.5 %),and the MDB((1.2 %)).Unfed larvae could survive up to only 8d.a.h.There were no significant differences in growth between experimental groups.Next,red drum Sciaenops ocellatus larvae were fed from 10 d.a.h.to 20 d.a.h.on rotifers,MDA,MDA 1/3 rotifers or 1/3 rotifer only.Larvae fed on MDA 1/3 rotifers had significant higher survival rate and growth performance than those on 1/3 rotifers exclusively.These results suggested that potential of MDA as a part replacement for live food from the early developmental stage in the seed production of red drum Sciaenops ocellatus.