不同水平酵母菌提取物对马生长性能、免疫机能及粪便微生物菌群结构的影响  

Effects of different levels of yeast extract on growth performance, immune function and fecal microflora structure of horses

作　　者：王勇[1] 王怀栋[1] 郭永清[1] WANG Yong;WANG Huaidong;GUO Yongqing(Career Technical College,Inner Mongolia Agricultural University,Baotou,Inner Mongolia 014109,China)

机构地区：[1]内蒙古农业大学职业技术学院,内蒙古包头014109

出　　处：《中国饲料》2020年第21期49-52,共4页China Feed

摘　　要：为研究不同水平酵母菌提取物对马生长性能、免疫机能及粪便微生物菌群结构的影响,试验选择8月龄体重相近的纯血马驹40匹,随机分成4组,每组10个重复,每重复1匹,1组为空白对照组饲喂基础日粮,试验2、3、4组分别在基础日粮中添加1.0%、2.0%、3.0%的酵母菌提取物,试验期为28 d。结果表明:(1)试验2、3、4组的平均采食量均高于1组(P>0.05),试验3、4组的试验末重和平均日增重较1组分别提高7.9%、10.2%、15.1%、19.2%(P<0.05);(2)试验3、4组IgG、IgA、IL-2的含量较1组相比分别提高11.8%、14.7%、9.3%、10.1%、20.7%、28.5%(P<0.05),试验2、3、4组血清中的IgM、IL-6含量均高于1组(P>0.05);(3)试验3、4组粪便中双歧杆菌的含量较1组相比分别提高5.2%、6.7%(P<0.05),试验3、4组粪便中大肠杆菌的含量分别降低18.5%、19.1%(P<0.05),试验2、3、4组粪便中乳酸杆菌的含量均高于1组(P>0.05)。综上所述,酵母菌提取物可以提高纯血马驹生长性能和免疫机能,改善肠道菌群结构,抑制有害菌生长,提高有益菌生长,添加量以3.0%为适宜。In order to study the effects of different levels of yeast extract on the growth performance,immune function and fecal microflora structure of horses.In the experiment,40 pure blood colts with similar body weight at 8 months old were randomly divided into 4 groups,10 repetitions in each group and 1 in each repetitions.Group 1 was the blank control group and fed the basic diet.In groups 2,3 and 4,1.0%,2.0%and 3.0%yeast extract were added to the basic diet respectively.The experimental period was 28 days.The results showed that:(1)The average food intake of groups 2,3 and 4 was higher than that of group 1(P>0.05).The end weight and average daily gain of test groups 3 and 4 were 7.9%,10.2%,15.1%and 19.2%higher than those of group 1(P<0.05);(2)The contents of IgG,IgA and IL-2 in test groups 3 and 4 were 11.8%,14.7%,9.3%,10.1%,20.5%and 28.5%higher than those in group 1(P<0.05);The contents of serum IgM and IL-6 in test groups 2,3 and 4 were higher than those in group 1(P>0.05).(3)Compared with group 1,the contents of Bifidobacteria in feces of test groups 3 and 4 was increased by 5.2%,6.7%.The content of E.coli in feces of groups 3 and 4 was decreased by 18.5%and 19.1%respectively(P<0.05).The content of Lactobacillus in feces of groups 2,3 and 4 was higher than that of group 1(P>0.05).To sum up,3.0%yeast extract was suitable for improving the growth performance and immune function of pure blood foal,improving the structure of intestinal flora,inhibiting the growth of harmful bacteria and improving the growth of beneficial bacteria.

关 键 词：酵母菌提取物 纯血马 生长性能 免疫机能 微生物菌群 

分 类 号：S816.7[农业科学—饲料科学]