松江鲈鱼工厂化养殖试验研究

采用比较试验的方法对松江鲈鱼工厂化养殖模式进行研究。以养殖存活率、质量增加率等为指标,比较海水逐级淡化和纯淡水两种水处理模式与利用瓦片和PVC管两种遮蔽物进行松江鲈鱼养殖的效果,以了解不同水处理方法和不同遮蔽物对松江鲈鱼生长的影响,探索松江鲈鱼工厂化人工养殖的适宜条件。结果显示,不同水处理方法对松江鲈鱼的生长有较大影响,松江鲈鱼的存活率为37%~71%,海水逐级淡化试验组存活率显著高于纯淡水对照组(P0.05);松江鲈鱼的质量增加率为1.83%~6.12%,海水逐级淡化试验组质量增加率显著大于纯淡水对照组(P0.05);而采用不同遮蔽物进行养殖试验,各试验组的松江鲈鱼生长性能没有较大差异。研究表明,海水逐级淡化的水处理养殖模式更适合松江鲈鱼养殖。

Comparative experiments on different factory culture modes of Trachidermus fasciatus

Comparative experiments were conducted in this paper to study the different factory culture modes for Trachidermus fasciatus.Taking survival rate (SR) and weight gain rate (WGR) as indicators,the paper compared the effects on Trachidermus fasciatus growth of two kinds of water treatment methods,i.e.,gradually diluted seawater and pure freshwater,as well as two kinds of shelters,i.e.,tile and PVC tube,in order to find out the optimal conditions for the factory culture of the fish. The results showed that,different water treatment methods exerted different effects on the target fish growth:the SR ranged from 37% to 71%,with the SR value of the gradually diluted seawater group significantly higher than that of the pure freshwater group ( P>0.05) , and the WGR ranged from 1.83% to 6.12%,with that of the gradually diluted seawater group also significantly higher than that of the other group (P>0.05);while with the different shelters in culture experiments,the growth of the target fish didn't exhibit significant differences.The research shows that,the culture mode using gradually diluted seawater is more suitable for the factory culture of Trachidermus fasciatus.