噬茵蛭弧菌在罗非鱼养殖生产中的防病效果

目的]为了探讨噬菌蛭弧菌（Bdellovibrio bacteriovorus）在罗非鱼养殖生产中的防病效果。方法]向罗非鱼养殖池泼洒不同浓度的噬菌蛭弧菌或光合细商，观察1个生产周期内养殖池的细菌总数和大肠菌群的变化及罗非鱼的发病情况和产量。结果]噬菌蛭弧菌用量在5×10^7PFU／m^3以下时，随着用量的增加，细菌总数和大肠菌群的减少幅度越来越明显，罗非鱼因细菌痛导致的死亡也明显减少，产量明显提高；噬菌蛭弧菌与光合细菌配合使用的效果更好；单用光合细菌时，细菌总数和大肠菌群的减少幅度较小，发生较严重的细菌病，不能达到防病的效果。结论]在罗非鱼养殖生产中，噬菌蛭弧茵的使用量为5×10^7PFU／m^3即可达到预防细菌病的目的。

Effects of B.bacteriovorus on Disease Prevention in Tilapia Farming

Objective] To study the effects of B.bacteriovorus on Tilapia disease control.Method] B.bacteriovorus and photosynthetic bacteria were spilled into the Tilapia farming pond with the usage of different concentration,and the changes of the water general bacterial population and coli group,the incidence and production of Tilapia were studied within whole cultivation period.Result] It was demonstrated that,in contrast with the control group,along with the increase of B.bacteriovorus dosage,the general bacter...