本试验旨在研究饲粮中添加不同水平的生姜粉对蛋鸡生产性能及免疫功能的影响。试验选用27周龄的海兰褐商品蛋鸡675只，随机分为5个处理，每个处理5个重复，每个重复27只。对照组饲喂基础饲粮，其余4组分别用0.5%、1.0%、1.5%和2.0%的生姜粉等量替代基础饲粮中的麸皮。试验期为70 d。结果表明，饲粮中添加适量生姜粉可以显著提高蛋鸡的平均日产蛋量和试验3~4周的产蛋率以及试验1~2周的平均蛋重（P<0.05），降低试验5~6周和9~10周蛋鸡的料蛋比（P<0.05），但对蛋鸡的平均日采食量没有显著性影响（P>0.05）；此外，生姜粉的适量添加可以提高蛋鸡的免疫力，在试验第70天时，显著提高了蛋鸡血清中H9和Re-5 H5亚型禽流感抗体效价以及全血中粒细胞数（P<0.05）；且以1.0%的生姜粉添加量效果最佳。以上结果说明，饲粮添加生姜粉能够提高蛋鸡的生产性能和免疫力，以1.0%生姜粉为最适添加量。

To investigate the effects of different dietary ginger powder levels on performance and immune function of laying hens, 675 Hyline brown laying hens at 27 weeks of age were allotted into 5 treatments with 5 replicates per treatment and 27 hens per replicate. Laying hens were fed diets supplemented with 0, 0.5%, 1.0%, 1.5% and 2.0% of ginger powder replacing equivalent wheat bran in the basal diet formulation for 70 days, respectively. Results showed as follows: the suitable dietary level of ginger powder significantly increased the egg mass, the laying rate in 3 to 4 weeks of the trial and the average egg weight in 1 to 2 weeks of the trial (P<0.05), reduced the ratio of feed to egg in 5 to 6 weeks and 9 to 10 weeks of the trial (P<0.05), but had no significant effects on the average daily feed intake of laying hens (P>0.05). Besides, laying hens fed the diets supplemented with the suitable level of ginger powder had a higher Avian influenza H9 and H5Re-5 antibody titer in the serum and the number of granulocyte in the blood at d 70 of the trial (P<0.05). The effect of 1.0% ginger powder was the best. In conclusion, ginger powder can improve the performance and immune function of laying hens, and the suitable supplemental dosage of ginger powder is 1.0%.［Chinese Journal of Animal Nutrition，2011，23（3）：459-465］