饲料中添加黄芪粉对蛋鸭生长、肠道菌群以及抗氧化性能的影响  

Effects of Adding Astragalus Powder to Feed of Laying Ducks on Growth,Intestinal Flora andAntioxidant Performance

作　　者：居锦霞 顾宣林 JU Jinxia;GU Xuanin(Agriculture and Rural Bureau of Xiejia Town,Gaoyou City,Gaoyou 225600,Jiangsu China)

机构地区：[1]高邮市卸甲镇农业农村局,江苏高邮225600

出　　处：《饲料博览》2023年第5期44-47,共4页Feed Review

摘　　要：为探究饲料中添加黄芪粉对蛋鸭生长、肠道菌群以及抗氧化性能的影响,选用某私人养殖场育成期高邮麻鸭120只,随机分为4组(对照组和试验Ⅰ~Ⅲ组),每组6个重复,每个重复5只。对照组饲喂基础日粮,试验Ⅰ~Ⅲ组在基础日粮的基础上分别添加100、200mg·kg^(-1)和300mg·kg^(-1)的黄芪粉,预试验7d,正式试验42d。结果表明:与对照组相比,试验Ⅰ、Ⅱ组和试验Ⅲ组蛋鸭的终末体重和平均日增重显著提高(P<0.05),料重比显著降低(P<0.05),试验Ⅱ组和试验Ⅲ组蛋鸭的平均日采食量显著提高(P<0.05);试验Ⅰ、Ⅱ、Ⅲ组蛋鸭肠道中大肠杆菌数量显著降低(P<0.05),乳酸杆菌和双歧杆菌数量显著升高(P<0.05);试验Ⅰ、Ⅱ、Ⅲ组蛋鸭血清中的过氧化氢酶(CAT)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)含量显著升高(P<0.05)。综上结果表明,在饲料中添加黄芪粉可以有效提高蛋鸭的生长性能,改善肠道菌群结构,并提高机体抗氧化性能,在本试验条件下,饲料中添加黄芪粉的最适剂量为300mg·kg^(-1)。In order to explore the effects of adding astragalus powder to feed of laying ducks on the growth,intestinal flora and antioxidant capacity,a total of 120 laying ducks in the growing period of a private farm were randomly divided into four groups(control group and experimental groupsⅠ-Ⅲ),with six replicates in each group and five ducks in each replicate.The control group was fed with the basic diet,and the experimental groupsⅠ-Ⅲwere fed with 100,200 mg·kg^(-1) and 300 mg·kg^(-1 )astragalus powder added to the basic diet,respectively.The preli-minary experiment lasted for 7 days and the formal experiment lasted for 42 days.The results showed that compared with the control group,the terminal weight and average daily gain of laying ducks in the experimental groupsⅠ,ⅡandⅢwere significantly increased(P<0.05),and the feed-to-weight ratio was significantly decreased(P<0.05),the average daily feed intake of laying ducks in the experimental groupsⅡandⅢwere significantly increased(P<0.05).The number of Escherichia coli in intestines of laying ducks in the experimental groups I,ⅡandⅢwere all decreased significantly(P<0.05),while the number of Lactobacillus and Bifido-bacterium were increased signi-ficantly(P<0.05).The contents of CAT,SOD and GSH-Px in the serum of laying ducks in the experimental groups Ⅰ,ⅡandⅢwere increased significantly(P<0.05).The above results indicated that adding astragalus powder to the feed could effectively not only improve the growth performance and the intestinal microbiota structure,but also enhance the body′s antioxidant performance of laying ducks.Under the conditions of this experiment,the optimal dosage of adding astragalus powder to the feed was 300 mg·kg^(-1).

关 键 词：黄芪 蛋鸭 生长性能 肠道菌群 抗氧化性能 

分 类 号：S816.7[农业科学—饲料科学]