本试验旨在研究饲粮中添加不同水平葛根总黄酮对爱拔益加（AA）肉鸡生长性能及肉品质的影响。选择健康1日龄AA肉鸡275羽，随机分为5个组，每组5个重复，每个重复11羽鸡。对照组饲喂基础饲粮，试验组分别在基础饲粮中添加10、50、250、1 250 mg/kg葛根总黄酮。试验期42 d。结果表明：1）10 mg/kg添加组AA肉鸡的平均日增重在8～14日龄、15～21日龄和29～35日龄时均显著高于对照组（P<0.05），但在22～28日龄时显著低于对照组（P<0.05）；250 mg/kg添加组AA肉鸡的平均日增重在8～14日龄时显著高于对照组（P<0.05）。10 mg/kg添加组AA肉鸡的料重比在15～21日龄、29～35日龄和36～42日龄时显著低于对照组（P<0.05），但在22～28日龄时显著高于对照组（P<0.05）。各组AA肉鸡的平均日采食量差异不显著（P>0.05）。2）与对照组相比，10 mg/kg添加组AA肉鸡胸肌、腿肌的亮度（L^*）值显著降低（P<0.05），红度（a^*）值有升高趋势但差异不显著（P>0.05）；250 mg/kg添加组腿肌亮度值显著低于对照组（P<0.05）；50 mg/kg添加组胸肌、腿肌的黄度（b^*）值均显著低于对照组（P<0.05）。与对照组相比，250、1 250 mg/kg添加组AA肉鸡的胸肌剪切力显著降低（P<0.05）；250 mg/kg添加组的胸肌水分含量显著高于对照组（P<0.05）。结果表明，饲粮中添加10 mg/kg的葛根总黄酮可提高AA肉鸡的生长性能，但添加250 mg/kg的葛根总黄酮可改善肌肉的色泽和嫩度。

This experiment was conducted to investigate the effects of dietary different level of Puerarin flavonoids on growth performance and meat quality of Arbor Acre (AA) broilers. A total of 275 healthy one-day-old AA broilers were randomly divided into 5 groups with 5 replicates per group and 11 broilers per replicate. Broilers in the control group were fed a basal diet, and the others were fed the basal diet supplemented with 10, 50, 250 and 1 250 mg/kg Puerarin flavonoids, respectively. The feeding trial lasted for 42 days. The results showed as follows: 1) compared with the control group, the average daily gain (ADG) of AA broilers in 10 mg/kg supplemental group was significantly increased during 8 to 14, 15 to 21 and 29 to 35 days of age (P<0.05), but the ADG in 10 mg/kg supplemental group was significantly decreased during 22 to 28 days of age (P<0.05). The ADG of AA broilers in 250 mg/kg supplemental group was significantly higher than that in the control group during 8 to 14 days of age (P<0.05). Compared with the control group, the ratio of feed to gain (F/G) of AA broilers in 10 mg/kg supplemental group was significantly decreased during 15 to 21, 29 to 35 and 36 to 42 days of age (P<0.05), but the F/G in 10 mg/kg supplemental group was significantly increased during 22 to 28 days of age (P<0.05). There was no significant difference in the average daily feed intake (ADFI) of AA broilers among all groups (P<0.05). 2) Compared with the control group, the lightness (L^*) value of breast and leg muscle of AA broilers in 10 mg/kg supplemental group was significantly decreased (P<0.05), and the redness (a^*) value in 10 mg/kg supplemental group had a raising trend (P>0.05). The lightness value of leg muscle in 250 mg/kg supplemental group was significantly lower than that in the control group (P<0.05). The yellowness (b^*) value of breast and leg muscle in 50 mg/kg supplemental group was significantly lower than that in the control group (P<0.05). Moreover, compared with the control group, the shear force of breast muscle of AA broilers in 250 and 1 250 mg/kg supplemental groups was significantly decreased (P<0.05), and the moisture content of breast muscle in 250 mg/kg supplemental group was significantly increased (P<0.05). These results suggest that dietary 10 mg/kg Puerarin flavonoids can improve the growth performance, but dietary 250 mg/kg Puerarin flavonoids can improve the meat color and tenderness of AA broilers.