草鱼得了肠炎病以后,在池塘中离群独游,行动缓慢,食欲减退,鱼体呈现乌黑色,肛门红肿,肠壁充血呈现紫红色,肠内充满黄色粘液。严重时轻压腹部有血黄粘液从肛门流出。每年五、六月份和八、九月份是发病期。病鱼死亡率高达30—50％。防治草鱼肠炎病除了加强管理 Grass carp had enteritis disease, outlier solitary swimming in the pond, slow action, loss of appetite, fish black, anal swelling, intestinal congestion showed purple, intestinal yellow mucus is full. Severe mild pressure on the abdomen bloody yellow mucus from the anus outflow. May, June and August, September is the onset period. Disease fish mortality as high as 30-50%. Control grass carp enteritis in addition to strengthening management