3郾肝坏死病肝坏死病在整个养殖期均有发生。发病时,黄鳝体表粘液分泌过多,背部及两侧皮肤发黑,下颌部经常伴随有炎症,头盖骨表皮有时腐烂成一圆孔,并露出头骨。解剖发现,肝明显肿大、严重时甚至充满整个腹腔,肝颜色暗红,肠道无炎症,腹腔无腹水。病鳝一般游动无力,常游于水草之 3 郾 liver necrosis of liver necrosis in the entire breeding period have occurred. Occurrence, the eel body surface mucus secretion, back and both sides of the skin black, often accompanied by inflammation of the lower jaw, the skull epidermis sometimes rot into a round hole, and exposed skull. Anatomy found that the liver was obviously swollen, severe and even filled the entire abdominal cavity, dark red color, no inflammatory bowel disease, abdominal ascites. Disease eel general swimming weakness, often swim in the water