发酵黄芪对肉鸡生长性能、抗氧化功能的影响

doi:10.16431/j.cnki.1671-7236.2018.03.019

摘要/Abstract

摘要：

试验旨在研究黄芪发酵前后对肉鸡生长性能、抗氧化功能的影响。将210只1日龄AA肉鸡随机分为7组，每组3个重复，每个重复10只。A组为对照组，饲喂基础日粮；B、C、D、E、F、G组分别在基础日粮中添加0.2%黄芪、0.5%黄芪、0.8%黄芪、0.2%发酵黄芪、0.5%发酵黄芪、0.8%发酵黄芪，添加量以质量百分比计。试验期为42 d。分别于第21、42天测定肉鸡生长指标、抗氧化指标。结果表明，在第21天，发酵黄芪组平均日采食量均显著高于黄芪组（P < 0.05），黄芪组料重比显著低于对照组和发酵黄芪组（P < 0.05）；E组血清过氧化氢酶（CAT）含量显著高于A、B组（P < 0.05），血清谷胱甘肽过氧化物酶（GSH-Px）活性显著高于与A组（P < 0.05）。在第42天，发酵黄芪组平均日增重均较高，料重比显著低于A、B组（P < 0.05）；试验组GSH-Px活性均显著高于A组（P < 0.05），发酵黄芪组与黄芪组相比差异不显著（P > 0.05），发酵黄芪组血清中超氧化物歧化酶（T-SOD）活性均高于黄芪组，且与B和C组差异显著（P < 0.05）。综上所述，在肉鸡日粮中添加一定量发酵黄芪能显著提高平均日增重，降低料肉比，且可通过提高血清中GSH-Px和T-SOD活性来提高其抗氧化能力；发酵黄芪的作用效果优于黄芪，最适宜添加量为0.5%。

关键词: 肉鸡; 发酵黄芪; 生长性能; 抗氧化功能

Abstract:

This study was aimed to investigate the effects of fermented and unfermented Astragalus on growth performance and antioxidant function of broilers.A total of 210 broiler were randomly distributed into 7 groups with 3 replicates per group and 10 birds per replicate.The broilers in group A (control group) fed with the basic diets,while that of groups B,C,D,E,F and G fed basal diet with supplement 0.2% unfermented Astragalus, 0.5% unfermented Astragalus, 0.8% unfermented Astragalus,0.2% fermented Astragalus,0.5% fermented Astragalus and 0.8% fermented Astragalus, respectively.The experimental period was 42 d,and the growth performance and antioxidant indexes of broilers were measured at the 21 and 42 d,respectively.The result showed that at the 21 d,the average daily feed intake in fermented Astragalus groups was significantly higher than that of the unfermented Astragalus groups (P < 0.05),the F/G in unfermented Astragalus groups was lower than that of the control group and fermented Astragalus groups(P < 0.05);The levels of CAT in group E was significantly higher than that in groups A and B (P < 0.05),and the activity of GSH-Px was significantly higher than group A (P < 0.05).At the 42 d,the average daily gain of fermented Astragalus groups was high,while the F/G was significantly lower than that of groups A and B (P < 0.05);The activity of GSH-Px in experimental groups was significantly higher than control group (P < 0.05),and there was no significant difference among fermented and unfermented Astragalus groups (P > 0.05).The activity of T-SOD in fermented Astragalus groups was significant higher than that in groups B and C (P < 0.05).In conclusion,adding a certain amount of fermented Astragalus in broiler diet could significantly increase the average daily gain,reduce the F/G,and improve its antioxidant capacity by increasing the activity of GSH-Px and T-SOD in serum.The effect of fermented Astragalus on growth performance and antioxidant ability of broiler was better than unfermented Astragalus with the optimum dosage was 0.5%.

Key words: broiler; fermented Astragalus; growth performance; antioxidant function

中图分类号:

S816.6

乔宏兴, 史洪涛, 宋予震, 赵圣振, 边传周. 发酵黄芪对肉鸡生长性能、抗氧化功能的影响[J]. 《中国畜牧兽医》, 2018, 45(3): 705-711.

QIAO Hongxing, SHI Hongtao, SONG Yuzhen, ZHAO Shengzhen, BIAN Chuanzhou. Effects of Fermented Astragalus on Growth Performance and Antioxidant Function of Broilers[J]. , 2018, 45(3): 705-711.

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