用添加蛭弧菌的饲料喂养草鱼,能够显著加快草鱼的生长发育,降低饵料系数。同时明显影响各项免疫指标,胸腺的免疫器官指数逐渐升高,头肾的免疫器官指数开始时升高然后下降,血液中的NBT阳性细胞数量逐渐增加, 36d内相对生长率可提高32. 6%。用温和气单胞菌疫苗免疫后,草鱼的免疫应答水平明显提高,免疫力增强。蛭弧菌适宜的添加剂量为0. 5%。 Feed grass carp supplemented with Bdellovibrio can significantly accelerate the growth and development of grass carp and reduce the feed conversion coefficient. While significantly affect the various immune indicators, thymic immune organ index gradually increased, head and kidney immune organ index began to increase and then decreased, the number of NBT positive cells in the blood gradually increased, the relative growth rate within 36d can be increased 32.6 %. Immunization with grass carp vaccine significantly improved the immune response of grass carp. 5%. Bdellovibrio appropriate dosage of 0.5%.