本试验旨在研究黑麦草颗粒饲粮对扬州鹅生长性能、屠宰性能和血清生化指标的影响。试验选用1日龄扬州鹅300只，随机分成5组，每组3个重复，每个重复20只。各组饲粮黑麦草添加水平分别为0（对照组）、2%（Ⅰ组）、4%（Ⅱ组）、6%（Ⅲ组）和8%（Ⅳ组）。试验期为21 d。结果表明：1）7日龄时，Ⅱ、Ⅳ组平均日采食量显著低于对照组（P<0.05），Ⅰ组平均日增重显著高于对照组（P<0.05）；14日龄时，Ⅱ组平均日采食量显著低于对照组（P<0.05），Ⅱ、Ⅲ组料重比显著低于对照组（P<0.05）；21日龄时，Ⅳ组平均日采食量显著高于对照组（P<0.05）。2）Ⅰ、Ⅱ、Ⅲ、Ⅳ组屠体重、半净膛重、全净膛重和腿肌重均高于对照组（P>0.05），各组胃pH无显著差异（P>0.05）。3）各组血清谷草转氨酶和碱性磷酸酶活性差异不显著（P>0.05）；Ⅰ、Ⅲ和Ⅳ组血清总蛋白含量显著高于对照组（P<0.05）；Ⅰ、Ⅱ组血清葡萄糖含量显著低于对照组（P<0.05）；Ⅰ、Ⅱ和Ⅳ组血清谷丙转氨酶活性显著低于对照组（P<0.05）。由此可见，黑麦草颗粒饲粮能够提高扬州鹅生长性能，改善屠宰性能和血清生化指标，黑麦草适宜添加水平为6%。

This experiment was conducted to study the effects of ryegrass pellet diet on growth performance, slaughter performance and serum biochemical indexes of Yangzhou geese. A total of 300 one-day-old Yangzhou geese were randomly divided into 5 groups with 3 replicates per group and 20 geese per replicate. Geese in the groups were fed the diets supplemented with 0 (control group), 2% (group Ⅰ), 4% (group Ⅱ), 6% (group Ⅲ) and 8% (group Ⅳ) ryegrass, respectively. The experiment lasted for 21 days. The results showed as follow: 1) at 7 days of age, the average daily feed intake (ADFI) in groups Ⅱ and Ⅳ was significantly lower than that in control group (P<0.05), the average daily gain in group Ⅰ was significantly higher than that in control group (P<0.05); at 14 days of age, the ADFI in group Ⅱ was significantly lower than that in control group (P<0.05), the ratio of feed to gain in groups Ⅱ and Ⅲ was significantly lower than that in control group (P<0.05); at 21 days of age, the ADFI in group Ⅳ was significantly higher than that in control group (P<0.05). 2) The carcass weight, semi-eviscerated weight, eviscerated weight and leg muscle weight in groups Ⅰ, Ⅱ, Ⅲ and Ⅳ were higher than those in control group (P>0.05), there was no significant difference on stomachic pH among all groups (P>0.05). 3) There was no significant difference on the activities of glutamic oxalocetie transaminase and alkaline phosphatase in serum among all groups (P>0.05); the serum total protein content in groups Ⅰ, Ⅲ and Ⅳ was significantly higher than that in control group (P<0.05); the serum glucose content in groups Ⅰ and Ⅱ was significantly lower than that in control group (P<0.05); the serum glutamic-pyruvic transaminase activity in groups Ⅰ, Ⅱ and Ⅳ was significantly lower than that in control group (P<0.05). In conclusion, ryegrass pellet diet can improve the growth performance, slaughter performance and serum biochemical indexes of Yangzhou geese, and the optimal supplemental level of ryegrass is 6%.