现代水产养殖过程中的高密度集约化养殖,使养殖鱼类面临越来越多的应激因素的影响,特别是近年来在水产养殖上发生的一种以出血为主要症状的鱼类应激性疾病。该病是一种非传染性疾病,病因复杂,防治困难,常使鱼类快速地发生全身性体表和鳃出血而大批死亡。从而降低了生产性能和饲 Intensive and intensive aquaculture in modern aquaculture is causing more and more stress effects on farmed fish, especially in aquaculture in recent years, a type of fish that is predominantly bleeding Sexually transmitted diseases. The disease is a non-contagious disease, the etiology is complex, prevention and treatment difficulties, often make the fish rapid systemic body surface and gills bleeding and a large number of deaths. Thus reducing the production performance and feeding