罗氏沼虾饵料中添加 0 5 %虫草菌丝 ,罗氏沼虾血细胞吞噬百分比和吞噬指数、血清溶菌酶活力及酚氧化酶活力均显著提高。经嗜水气单胞菌攻毒后 ,试验组的免疫保护率也明显提高。试验证明 ,口服虫草菌粉可显著地提高罗氏沼虾的免疫功能 ,有效地预防嗜水气单胞菌的感染 Macrobrachium rosenbergii diet added 0 5% Cordyceps sinensis, Macrobrachium rosenbergii phagocytic percentage and phagocytic index, serum lysozyme activity and phenol oxidase activity were significantly increased. After the challenge with Aeromonas hydrophila, the immune protection rate of the experimental group was also significantly increased. Experiments show that oral Cordyceps powder can significantly improve the immune function of Macrobrachium rosenbergii effectively prevent the infection of Aeromonas hydrophila