探讨了饲料中蛋白质、必需脂肪酸和锌含量对虹鳟白细胞杀伤力的影响。共进行3个实验(Ⅰ、Ⅱ和Ⅲ),分别用蛋白质、必需脂肪酸和锌含量不同的饲料喂虹鳟。然后,以潜伏8h 后的 P815鼠肿瘤细胞作靶细胞,以从试验鱼前肾分离的白细胞作效应细胞,来检验虹鳟白细胞的杀伤力,结果表明,饲料中的蛋白质含量对白细胞的天然杀伤力无任何影响。当饲料中缺乏必需脂肪酸和锌时,白细胞活力下降。 The effects of dietary protein, essential fatty acids and zinc on the cytotoxicity of rainbow trout leukocytes were investigated. A total of three experiments (Ⅰ, Ⅱ and Ⅲ) were performed, feeding rainbow trout with different contents of protein, essential fatty acid and zinc respectively. Then, P815 murine tumor cells were incubated for 8 hours as target cells, and leukocytes isolated from experimental fish anterior kidney were used as effector cells to test the lethality of rainbow trout leukocytes. The results showed that the protein content in the diet was naturally lethal to leukocytes No effect. When the diet lacks essential fatty acids and zinc, white blood cell activity decreased.