论文部分内容阅读
在鮸鱼的早繁育苗过程中(6～7月份),用商品微囊饵料和自制饵料,部分或全部替代轮虫、卤虫和桡足类等活饵料,观察其仔稚幼鱼生长速度、成活率和摄食率。结果表明,1、仔鱼阶段全部生物饵料组的鮸鱼仔鱼成活率最高(40.0%),50%配合饵料组次之(31.0%),100%配合饵料组最低(12.5%),生长速度和摄食率没明显差异;2、稚幼鱼阶段的三组饱食率和摄食率没差异,生长速度以50%配合饵料组略快于全部生物饵料组和100%配合饵料组,存活率也以50%配合饵料组最高,生物饵料组其次,100%配合饵料组最低。研究认为,商品配合饵料可作为鮸鱼在春夏季育苗中因生物饵料缺乏时良好的替代品,并对鮸鱼仔稚幼鱼生长发育有良好的营养作用。
During the early breeding process (June-July), the partial or complete replacement of live feeds such as rotifers, artemia and copepods with commercial microcapsules and homemade feedstuffs to observe the growth of larvae , Survival rate and feeding rate. The results showed that: 1, the survival rate of the anchovy larvae in all the groups was the highest (40.0%) in the lure group, followed by the forage group with 50% (31.0%), the lowest (12.5%) with 100% forage group, There was no significant difference in the rate of feeding and feeding between the three groups in the juvenile fish stage. The growth rate was slightly faster than that of the total bait group and the 100% bait group with 50% % With the highest feed group, followed by the biological feed group, 100% with the lowest feed group. The study suggests that the commercial bait can be used as a good substitute for the marine bait in spring and summer nursery stock due to the lack of biological feed, and has a good nutritional effect on the growth and development of juvenile mandarin fish.