论文部分内容阅读
一、病况观察 1.症状对24尾病鱼的观察,病鱼侧线上方及背部鳞片粗糙,失去光泽,颜色较白,易脱落,有时有丝状物(藻类或真菌待查)附着;眼眶下方常有明显小血斑点,上颌、口腔内两颊部及下颏充血,严重者腹面两胸鳍间有一较大出血斑或灰褐色斑块,腹、臀、尾鳍基部充血,尾鳍及背鳍末端常腐蚀残缺。鳃充血或失血成白鳃,但不腐败;发病初期部份鱼肛门见有红肿。剥去皮鳞,尾柄和背鳍前侧线上方肌肉常呈片状出血,严重者两侧肌肉有紫色血斑、该处肌肉有的开始腐烂,出血症状典型;体腔内腹水兼有血水严重,肠道充塞度
First, the observation of the disease 1. Symptoms of fish on the 24-fish observation, sick fish on the side of the line above and back scales rough, tarnished, the color is white, easy to fall off, and sometimes filaments (algae or fungi to be investigated) attached; Often obvious small blood spots, maxillary, buccal and cheek Ministry and chin congestion, severe abdominal bleeding between the two pectorals have a spot or gray-brown patches, abdomen, buttocks, caudal fin base congestion, caudal fin and dorsal fin often corrosive . Gill congestion or blood loss into white gills, but not corrupt; early onset of some fish see inflamed anus. Stripping skin scales, caudal peduncle and dorsal fin in the upper side of the muscle often flaky bleeding, severe purple blood spots on both sides of the muscle, where some muscle began to decay, bleeding typical; body cavity with both severe ascites, intestinal Road congestion degree