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对斑点叉尾鱼回致病的3株细菌,经液体培养后灭活制备三联免疫疫苗,斑点叉尾鱼回鱼苗通过浸泡接种,抗感染能力大为增强。经人工感染试验,对CR 79-1-1和ST78-3-3菌免疫保护率达到91%~100%,对93-Ⅲ菌免疫保护率可达64%。
The pathogenic three kinds of bacteria of channel catfish returned to inoculation after liquid culture were inactivated to prepare the triple immunization vaccine. The snapdback fish fry inoculated by immersion greatly enhanced the anti-infective ability. After artificial infection test, the immune protection rate of CR 79-1-1 and ST78-3-3 reached 91% -100%, and the immune protection rate of 93- Ⅲ strain reached 64%.