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3草、青鱼疾病的防治3．1草鱼出血病3．1．1病原该病病原为草鱼出血病病毒,最适复制温度在30℃左右。3．1．2症状与诊断病鱼体内外各器官和组织呈现出血,有时有腹水,肠道无食物,充血但不糜烂。诊断时,须全面观察病体内外器官和组织的出血症状。如果出血症状明显,或有上述几种症状表现,可以诊断为草鱼出血病。3．1．3流行与危害该病是目前草鱼饲养阶段危害最大的
3 grass, prevention and treatment of the disease of herring 3.1 Grass carp hemorrhagic disease 3.1.1 Pathogen The pathogen is grass carp hemorrhagic disease virus, the optimum replication temperature is about 30 ℃. 3.1.2 Symptoms and Diagnosis Fish disease organs and tissues in vivo and in vivo showed bleeding, and sometimes ascites, intestine without food, congestion, but not erosion. Diagnosis, the body and tissues to be fully observed inside and outside the body bleeding symptoms. If the bleeding symptoms are obvious, or there are several symptoms, can be diagnosed as grass carp bleeding. 3.1.3 Prevalence and Harm The disease is currently the most dangerous stage of grass carp feeding