微生物发酵饲料对羔羊生长性能、瘤胃发酵功能及菌群的影响OA北大核心CSTPCD
Effects of microbial fermented feed on growth performance,rumen fermentation function,and microflora of lambs
试验旨在研究微生物发酵饲料对羔羊生长性能、瘤胃发酵参数及菌群的影响.试验选择44只体重接近、健康的湖羊羔羊,随机分为4组,每组11个重复,每个重复1只羊.对照组饲喂基础饲粮,试验组分别饲喂添加2.5％、5.0％和10.0％微生物发酵饲料的饲粮.预试期1周,正式试验期6周.结果表明:与对照组相比,饲喂5.0％和10.0％的微生物发酵饲料可以显著提高羔羊的末重和平均日增重(P＜0.05),饲喂2.5％、5.0％和10.0％微生物发酵饲料均可以显著降低羔羊的腹泻率(P＜0.05);饲喂5.0％和10.0％微生物发酵饲料可以显著增加羔羊瘤胃中乙酸、氨态氮水平(P＜0.05),显著降低瘤胃pH值(P＜0.05);饲喂2.5％、5.0％和10.0％微生物发酵饲料可以显著增加羔羊瘤胃中丙酸、总挥发性脂肪酸及菌体蛋白水平(P＜0.05),显著降低戊酸水平(P＜0.05).各组羔羊瘤胃微生物的覆盖率均高于99％,随着微生物发酵饲料添加量的增多,羔羊瘤胃Chao1指数和Ace指数呈现先降低后升高的趋势,其中2.5％发酵饲料组羔羊瘤胃Chao1指数和Ace指数显著低于对照组(P＜0.05).与对照组相比,饲喂2.5％、5.0％和10.0％微生物发酵饲料可以显著增加羔羊瘤胃中瘤胃球菌_2菌属、琥珀酸菌属、普雷沃氏菌属1的相对丰度(P＜0.05);饲喂5.0％和10.0％微生物发酵饲料可以显著增加瘤胃球菌_UCG-014菌属的相对丰度(P＜0.05).饲喂2.5％、5.0％和10.0％微生物发酵饲料可以显著增加羔羊瘤胃中放线菌门、厚壁菌门、拟杆菌门的相对丰度(P＜0.05).研究表明,饲喂5.0％微生物发酵饲料对提高羔羊生长性能、改善瘤胃发酵功能及菌群组成的效果较优.
The purpose of this experiment was to study the effects of microbial fermented feed on the growth performance,rumen fermentation parameters,and microflora of lambs.Forty-four healthy Hu sheep lambs with similar weight were randomly divided into four groups with 11 replicates in each group and one lamb in each replicate.The control group was fed with basal diet,the experimental groups was fed with 2.5％,5.0％,and 10.0％microbial fermented feed,respectively.The pre-test period was one week,and the formal test period was six weeks.The results showed that compared with the control group,feeding 5.0％and 10.0％microbial fermented feed could significantly increase the final weight and average daily gain of lambs(P＜0.05),and feeding 2.5％,5.0％,and 10.0％microbial fermented feed could significantly reduce the diarrhea rate of lambs(P＜0.05).Feeding 5.0％and 10.0％microbial fermented feed could significantly increase the levels of acetic acid and ammonia nitrogen in rumen of lambs(P＜0.05),and significantly reduce the pH value of rumen(P＜0.05).Feeding 2.5％,5.0％,and 10.0％microbial fermented feed significantly increased propionic acid,total volatile fatty acids,and bacterial protein levels in rumen of lambs(P＜0.05),and significantly decreased valeric acid levels(P＜0.05).The coverage rate of rumen microorganism in each group was higher than 99％.With the increase of microbial fermented feed,the rumen Chao1 index and Ace index of lamb decreased at first and then increased,and the rumen Chao1 index and Ace index of 2.5％fermented feed group were significantly lower than those of control group(P＜0.05).Compared with the control group,feeding 2.5％,5.0％,and 10.0％microbial fermented feed could significantly increase the relative abundance of Ruminococcus 2,Succinomyces and Prevostella 1 in rumen of lambs(P＜0.05),feeding 5.0％and 10.0％microbial fermented feed significantly increased the relative abundance of Ruminococcus UCG-014(P＜0.05).Feeding 2.5％,5.0％,and 10.0％microbial fermented feed can significantly increase the relative abundance of Actinomycetes,Firmicutes,and Bacteroides in rumen of lambs(P＜0.05).The results show that feeding 5.0％microbial fermented feed has a better effect on improving growth performance,rumen fermentation function and microflora composition of lambs.
张林吉;任春芝;任士飞;张善芳;邱良伟;孙朋
徐州生物工程职业技术学院,江苏徐州 221006睢宁县畜牧兽医技术指导站,江苏徐州 221299
畜牧业
发酵饲料微生物羔羊生长性能瘤胃发酵瘤胃菌群
fermented feedmicroorganismlambsgrowth performancerumen fermentationruminal flora
《饲料研究》 2024 (011)
18-23 / 6
徐州市2023年度现代农业面上项目(项目编号:KC23136);徐州市2023年度农村科技服务项目"丰县羊产业科技服务项目(项目编号:KC23140)";江苏现代农业产业技术体系建设专项资金[项目编号:JATS(2023)076]
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