本文旨在研究日粮精氨酸水平对断奶～2月龄肉兔生长性能、免疫器官指数及血清指标的影响。选用断奶肉兔100只，随机分成5组（每组20个重复，每个重复1只兔子，公母各占1/2），分别饲喂在基础日粮中添加0（对照组）、0.2%、0.4%、0.6%和0.8%精氨酸的试验日粮，预试期7d，正试期23d。结果表明：0.2%～0.8%组平均日增重极显著高于对照组（P<0.01），但0.2%～0.8%组间无显著差异（P>0.05）。日粮精氨酸水平对胸腺指数影响显著（P＝0.0345），对脾脏指数影响不显著（P>0.05）。血清IgA含量随日粮精氨酸水平的增加极显著提高（P<0.01），日粮精氨酸水平对IgM和IgG无显著影响（P>0.05）。日粮不同精氨酸水平对血清总蛋白和血清胆固醇含量影响极显著（P＝0.000 3，P＝0.0034）。血清胰岛素含量随日粮精氨酸水平的增加先升高后降低，以0.4%组最高。日粮不同精氨酸水平对血清类胰岛素样生长因子-1含量影响显著（P＝0.0484），以0.2%组含量最高。综合本试验测定指标，断奶～2月龄生长肉兔日粮精氨酸适宜添加量为0.2%～0.4％。

The experiment was conducted to study the effects of arginine on growth performance, immune organs indices and serum indices of weaner to 2-month-old growing meat rabbits. One hundred 1-month-old New Zealand rabbits were randomly assigned to 5 groups with 20 replicates in each group and each replicate contained 1 rabbit. Rabbits in 5 groups were fed basal diet with 0, 0.2%, 0.4%, 0.6% and 0.8% arginine, respectively. The trial lasted for 7 days for adaptation, and 23 days for sampling. The results showed that average daily gain in 0.2%～0.8% groups was significantly increased than that in control group (P<0.01), but no significant difference was found among 0.2%～0.8% groups (P>0.05). Arginine supplementation had significant influence on thymus indices (P＝0.034 5), but had no significant influence on spleen indices (P>0.05). With the increase of arginine level, IgA concentration in serum increased significantly (P<0.01), but it had no influence on IgG and IgM (P>0.05). Arginine supplementation had significant influence on total protein and cholesterol concentration in serum (P＝0.000 3, P＝0.003 4), but had no significant influence on serum urine nitrogen (P>0.05). Serum insulin concentration increased firstly and then decreased with the level of arginine increased, and the highest group was 0.4% group. Dietary arginine supplementation had significant influence on serum insulinlike growth factor1 concentration (P＝0.048 4), and the highest group was 0.2% group. In conclusion, the appropriate supplementation of arginine in diet of weaner to 2-month-old growing meat rabbit was 0.2%～0.4%.