中文摘要：

探讨了不同水平苜蓿黄酮对崇仁麻鸡母雏后期生长性能、屠宰性能及肌肉化学成分的影响。选用30日龄健康崇仁麻鸡母雏480只,随机分为4组,每组4个重复,每个重复30只。Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别在基础饲粮中添加0,0.05%,0.10%和0.15%的苜蓿黄酮。预试期5d,正试期28d。试验结果表明：与对照组相比,试验组添加苜蓿黄酮后平均日采食量有下降趋势（P〉0.05）,日增重和饲料报酬提高（P〉0.05）,其中以组Ⅲ效果最好,日增重比对照组提高3.27%（P〉0.05）,料重比降低5.82%（P〉0.05）。苜蓿黄酮对崇仁麻鸡母雏屠宰性能和肌肉蛋白质、肌苷酸含量无影响（P〉0.05）,但抑制了鸡只的脂肪沉积,其中Ⅲ组的皮下脂肪厚度和肌间脂肪宽度分别比对照组低26.22%和20.53%（P〈0.05）,Ⅳ组的腹脂率和腿肌脂肪含量分别比对照组低11.66%（P〈0.01）和9.35%（P〈0.05）。由上可知,生长后期的崇仁麻鸡母雏饲粮中添加苜蓿黄酮后,生产性能不受影响而平均日采食量下降,脂肪沉积减少,综合考虑以0.10%的苜蓿黄酮添加量较为适宜。

英文摘要：

To investigate the effects of alfalfa flavones on the growth performance, slaughter performance and muscular ingredients of female Chongren chickens at a late growth stage, 480 30-day-old healthy female Chon- gren chicken were randomly allotted to 4 groups with 4 replicates per group and 30 birds per replicate. The groups of Ⅰ ,Ⅱ , Ⅲ and IV were fed the basal diet supplemented with 0, 0.05%, 0.10% and 0.15% alfalfa flavones respectively. There was a pretrial period of 5 days followed by an experimental period of 28 days. Compared with the control group, the average daily feed intake （ADFI） of the treatment groups supplemented with alfalfa flavones had a slight tendency to decrease （P〈0.05）. There were slight increasing trends in the average daily gain （ADG） and feed conversion efficiency in the treatment groups （P〈0.05）. The best effect on increase of ADG （3. 27%） was in Group Ⅲ, while the ratio of feed/gain （F/G） decreased by 5.82% （P〈 0.05）. There were no significant differences in the slaughter contents of protein and inosine monophosphate （IMP） in muscles of the groups （P〈0.05）, but a supplement of alfalfa flavones significantly inhibited fat dep- osition. The subcutaneous fat thickness and intermuscular fat width of groups Ⅲwere lower than those of the control group by 26.22% and 20.53% （P〈0.05） respectively. The percentage of abdominal fat and content of fat in thigh muscle of groups Ⅳ were lower than those of the control group by 11.66% （P〈0.01） and 9.35% （P〈0.05） respectively. In conclusion, alfalfa flavones reduced ADFI and fat deposition without affecting growth performance at the later growth stage of female Chongren chickens. The best alfalfa flavone dose 0.10%.