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草鱼食性广,生长快,产量高,易扑捞,是我省淡水主要养殖品种之一。但草鱼易生病,尤以烂鳃、肠炎和赤皮病(称草鱼三大病害)危害严重,如不及时防治,就会造成大批死亡。症状:草鱼三大病均由细菌引起,每年5—8月流行。病鱼体色灰暗,头部暗黑色,离群独游,行动迟缓。烂鳃病主要是鳃丝发白腐烂,带污泥,鳃盖骨内表皮充血,严重时鳃盖小块被腐蚀,透明如同开窗。肠
Grass carp broad feeding, fast growth, high yield, easy fishing, is one of the major freshwater cultured species in our province. However, grass carp easy to get sick, especially rotten gill, enteritis and red-skin disease (called grass carp three major diseases) endangered, if not timely control, it will result in a large number of deaths. Symptoms: grass carp three major diseases caused by bacteria, 5-August each year epidemic. Sick fish body dark gray, dark head, outlier solitary, slow to act. Gill rot is mainly gill hair white rot, with sludge, epidermis within the operculum hyperemia, gill lumps were severely corroded, transparent as the window. intestinal