草鱼肉味鲜美,生长迅速,养殖方法简便,增产潜力较大,是我国传统养殖的优良品种。近年来随着社队和家庭养鱼的发展,草鱼的放养日益受到重视。可是,草鱼是一个多病的品种,我国几种常见的传染性鱼病(由病毒、细菌、真菌及单细胞藻类引起的鱼病)几乎都可以感染,其在我省的死亡率达60％左右。据浙江、江苏、江西、广东等地初步统计,草鱼从鱼苗喂养到成鱼,其成 Grass carp tasty meat, rapid growth, breeding method is simple, yield greater potential, is China’s traditional breeding fine varieties. In recent years, with the development of social teams and families, the stocking of grass carp has been paid more and more attention. However, grass carp is a sick variety. Almost all the infectious diseases of our country (fish diseases caused by viruses, bacteria, fungi and unicellular algae) can be infected. The mortality in our province is 60% about. According to Zhejiang, Jiangsu, Jiangxi, Guangdong and other places preliminary statistics, grass carp feed from the fry to adult fish, into