论文部分内容阅读
近几年来,金鱼皮肤溃疡病是影响我市金鱼苗种成活率的主要病害之一,特别是2004年5~6月份金鱼养殖基地苗种发病最为严重,发病率达85%以上,死亡鱼苗2000余万尾,损失严重。现将其症状、病因及防治措施分析总结如下:一、主要症状目测:鱼体初期感染时,在鱼体两侧有绒毛状增生物,但?
In recent years, the goldfish skin ulcer disease is one of the main diseases affecting the survival rate of the goldfish seedlings in our city, especially from May to June 2004, goldfish breeding base seedling incidence is the most serious, the incidence rate of 85%, the death of fry 2000 More than ten thousand, serious loss. Now the symptoms, causes and prevention and treatment measures are summarized as follows: First, the main symptoms of visual inspection: the initial infection of fish, there are villous accretions on both sides of the fish body, but?