草鱼的病毒性出血是我国首次发现的 ,也是目前淡水养殖业中危害最大的一种鱼病 ,严重地制约着草鱼种的生产。自 70年代以来 ,国内外对草鱼病毒性出血病研究很多 ,其中注射免疫技术比较成功 ,但因注射免疫接种对大规模的鱼种生产难于应用。鱼类通过摄饵而获得免疫途径是人们期求 Grass carp virus hemorrhage is found for the first time in our country, but also the most dangerous freshwater aquaculture in a fish disease, seriously hampered the production of grass carp species. Since the 1970s, many studies on grass carp viral hemorrhagic disease have been carried out at home and abroad, among which injection immunization is more successful. However, injection immunization is hard to be applied to large-scale fish production. It is desirable for fish to get their immune route by taking bait