酸化剂对早期断奶仔猪肠黏膜形态、微生物区系及挥发性脂肪酸产生的影响  

Effect of Acidifier on Intestinal Mucosal Morphology,Microflora and Volatile Fatty Acids of Early Weaned Piglets

作　　者：陈宝江[1] 景翠[1] 于会民[2] 金东航[1] 许晴[1] 卢娜[1] 

机构地区：[1]河北农业大学动物科技学院,河北保定071001 [2]中国农业科学院饲料研究所,北京100081

出　　处：《中国畜牧兽医》2011年第10期23-26,共4页China Animal Husbandry & Veterinary Medicine

基　　金：国家"十一五"科技支撑计划(2006BAD14B05);河北省科技计划项目(07220401D-5);石家庄科学技术研究与发展计划课题(09150162A)

摘　　要：选择平均体重为(7.5±0.15)kg断奶仔猪90头,随机分为3个处理,每个处理6个重复,每个重复5头。试验1、2组日粮分别在对照组日粮基础上添加0.2%、0.4%酸化剂。结果表明,添加酸化剂能够显著降低胃和十二指肠pH(P<0.05),随着食糜向后移动,效果下降;可以提高乳酸菌及总厌氧菌数量(P<0.05),降低大肠杆菌及总需氧菌数量;显著提高结肠食糜挥发性脂肪酸中丁酸、戊酸含量(P<0.05),降低乙酸含量(P<0.05);可以促进空肠肠绒毛生长(P<0.05),增加肠道吸收面积;由此可知,酸化剂通过降低肠道pH,促进厌氧菌生长繁殖,改善消化道环境,提高丁酸合成,促进肠绒毛生长。To determine the effect of acidifiers on intestinal mucosal morphology,microflora and volatile fatty acids of early weaned piglets,90 early weaned piglets（7.5 kg±0.15 kg） were divided into three groups with 6 replications 5 each.Diet were mixed with 0,0.2%,0.4% acidifiers respectively.The results showed that acidifier reduce the pH value of the stomach and duodenum significantly（P0.05） while the effect decreased as the chyme moved backward;it increased the amount of Lactobacilli and total anaerobic organism（P0.05） while decreased E.coli and total aerobic organism;it significantly increased butyric acid and pentanoic acid concentration of colon chyme（P0.05） while decreased acetic acid content（P0.05）;it promoted the growth of the jejunum intestinal villi（P0.05） to increased the intestinal absorption area.

关 键 词：早期断奶仔猪 酸化剂 肠黏膜 微生物区系 挥发性脂肪酸 

分 类 号：S816.7[农业科学—饲料科学]