为帮助养殖户掌握全雄黄颡鱼病害防治技术,养好全雄黄颡鱼,现将它的主要病害及防治方法介绍如下。一、红头病(又称中原一点红、裂头病)1.病原:迟缓爱德华氏菌、鮰爱德华氏菌,革兰氏阴性杆菌。2.主要症状:发病时头顶部溃烂、红肿、穿孔、鳃及鳍条基部充血、严重时头盖骨裂开,露出脑组织。病鱼临死前失 In order to help farmers grasp the technology of disease prevention and control of all male catfish, catfish is well-fed, and its main diseases and control methods are introduced as follows. First, the red head disease (also known as the Central Plains little red, split head disease) 1. Pathogen: Edwardsiella spp, 鮰 Edwardsiella, Gram-negative bacilli. 2. The main symptoms: the onset of the top of the head ulceration, swelling, perforation, gills and fin base congestion, severe cranium rupture, exposing brain tissue. Diseased fish died before dying