复合益生菌制剂对羔羊生长性能、肠道菌群及血清激素水平的影响  

Effects of compound probiotic preparation on growth performance,intestinal microbiota,and serum hormones levels in lambs

作　　者：韦聪聪 周青 张广平[2] WEI Congcong;ZHOU Qing;ZHANG Guangping

机构地区：[1]河南科技职业大学,河南周口466000 [2]河南农业大学,河南郑州450002

出　　处：《饲料研究》2025年第5期17-21,共5页Feed Research

摘　　要：试验探究了不同水平的复合益生菌制剂对羔羊生长性能、肠道菌群及血清激素水平的影响。试验选择2月龄湖羊羔羊48只,随机分为4组,每组4个重复,每个重复3只羊。各组试验饲粮中分别添加0(对照组,CK组)、0.5%(A组)、1.0%(B组)、2.0%(C组)的复合益生菌制剂。预试期7 d,正式试验期60 d。结果显示:与CK组相比,B组羔羊平均日增重显著增加(P<0.05),料重比显著降低(P<0.05)。与CK组相比,B组羔羊Chao指数显著提高(P<0.05),肠道中厚壁菌门相对丰度显著提高(P<0.05),B组和C组拟杆菌门、变形菌门相对丰度显著降低(P<0.05);各试验组肠道瘤胃球菌属相对丰度显著升高(P<0.05),琥珀酸弧菌属相对丰度显著降低(P<0.05);B组普雷沃氏菌属和拟杆菌属相对丰度显著提高(P<0.05),弯曲杆菌属相对丰度显著降低(P<0.05);B组羔羊肠道中克里斯滕森菌属、毛螺旋菌属相对丰度显著提高(P<0.05);B组和C组埃希氏菌属显著降低(P<0.05)。与CK组相比,B组和C组羔羊血清皮质醇(COR)水平显著降低(P<0.05),B组肾上腺素(EPI)水平显著降低(P<0.05),A组和B组内毒素(LPS)水平显著降低(P<0.05)。研究表明,饲粮中添加1.0%的复合益生菌制剂在改善羔羊生长性能、肠道健康及机体健康方面的效果较好。This study investigated the effects of different levels of compound probiotic preparation on growth performance,intestinal microbiota,and serum hormone levels in lambs.Forty-eight two-month-old Hu lambs were randomly divided into four groups with four replicates per group and three lambs per replicate.The experimental diets were supplemented with 0(control group,CK),0.5%(group A),1.0%(group B),and 2.0%(group C)compound probiotic preparation.The pre-test lasted for seven days,and the formal test lasted for 60 days.The results showed that compared with the CK group,the average daily gain of group B lambs significantly increased(P<0.05),and the feed to gain ratio significantly decreased(P<0.05).Compared with CK group,the Chao index and the relative abundance of Firmicutes in intestinal tract of lambs in group B were significantly increased(P<0.05),and the relative abundance of Bacteroides and Proteobacteria in groups B and C were significantly decreased(P<0.05).The relative abundance of Ruminococcus in all experimental groups significantly increased(P<0.05),whereas Succinivibrio decreased(P<0.05).The relative abundance of Prevotella and Bacteroides in group B were significantly increased(P<0.05).Christensenellaceae and Lachnospiraceae significantly increased in group B(P<0.05),and Escherichia in groups B and C was significantly decreased(P<0.05).Compared with CK group,the serum cortisol(COR)levels in groups B and C was significantly decreased(P<0.05),epinephrine(EPI)level in group B and lipopolysaccharide(LPS)level in groups A and B were significantly decreased(P<0.05).The study indicates that dietary supplementation of 1.0%compound probiotic preparation has a good effect on improving the growth performance,intestinal health and body health of lambs.

关 键 词：复合益生菌制剂 羔羊 生长性能 肠道菌群 血清激素 

分 类 号：S826[农业科学—畜牧学]