河南农业科学2017，Vol.46Issue(6)：125-129,5.DOI:10.15933/j.cnki.1004-3268.2017.06.024
Z-27菌剂替代抗生素对断奶仔猪肠道消化酶、营养成分及其生长性能的影响
Effects of Antibiotics Substitution Agent Z-27 on Intestinal Digestive Enzymes,Nutrients and Growth Performance of Weaned Piglet
摘要
Abstract
In order to evaluate the feeding effect of agent Z-27 which was a substitution of antibiotics on weaned piglets,96 weaned piglets(Doric×Landrace) were randomly and averagely divided into 4 groups.Basal diet was fed to weaned piglets in the groupⅠ.Basal diet with additions of 0.02% colistin sulfate and 0.05‰ gentamicin sulfate was fed to weaned piglets in the groupⅡ.Basal diet with additions of 0.02% colistin sulfate,0.05‰ gentamicin sulfate and 0.10% agent Z-27 was fed to weaned piglets in the group Ⅲ.Basal diet with additions of 0.10% agent Z-27 was fed to weaned piglets in the group Ⅳ.Regular observation of weaned piglet feces was recorded every day during the feeding period and diarrhea index was calculated.Weights of weaned piglets and the surplus deed were obtained by fasting for 12 hours at both the beginning and the end of experimental stage and average daily gains and feed-weight ratios were calculated.After 30 days,slaughter of weaned piglets was executed.And digestive enzymes,such as acid protease,alpha-amylase,lipase and cellulose,in contents of duodenum,jejunum and ileum were determined.Then contents of nutrients,such as crude protein,starch,crude fat and crude fiber,in contents of ileum and cecum and in feces were determined.Compared with the group Ⅱ,activities of acid protease in contents of duodenum,jejunum and ileum in the group Ⅳ were increased by 74.55%(P<0.05),133.40%(P<0.01),177.61%(P<0.01),respectively.And activities of alpha-amylase in contents of duodenum,jejunum and ileum in the group Ⅳ were increased by 36.82%(P<0.05),69.72%(P<0.05),117.73%(P<0.05),respectively.Activities of lipase in contents of duodenum,jejunum and ileum in the group Ⅳ were increased by 30.71%(P<0.05),71.03%(P<0.05),120.38%(P<0.05),respectively.Activities of cellulose in contents of duodenum,jejunum and ileum in the group Ⅳ were increased by 225.07%(P<0.01),244.77%(P<0.01),248.50%(P<0.01),respectively.Contents of nutrients,such as crude protein,starch,crude fat and crude fiber in feces in the group Ⅳ were decreased by 29.49%(P<0.05),53.41%(P<0.05),22.71%(P<0.05) and 31.60%(P<0.05),respectively.The average daily gain in the group Ⅳ was increased by 5.35%(P>0.05).The feed-weight ratio and diarrhea index in the group Ⅳ were decreased by 3.95%(P>0.05) and 22.41%(P>0.05),respectively.The results showed that agent Z-27 had multifunction of improving intestinal digestive enzymes and growth performance of weaned piglets and feed utilization ratio,decreasing contents of nutrients,such as crude protein,starch,crude fat and crude fiber in intestinal tract and in feces of piglets and decreasing weaned piglet diarrhea.The effect of agent Z-27 was superior to antibiotics addition agent.关键词
枯草芽孢杆菌/抗生素/断奶仔猪/消化酶/生长性能/腹泻指数Key words
Bacillus subtilis/antibiotics/weaned piglet/digestive enzymes/growth performance/diarrhea index分类
农业科技引用本文复制引用
霍姝伊,邓祖丽颖,姜军坡,王世英,张文龙,王迈,杜国霞..Z-27菌剂替代抗生素对断奶仔猪肠道消化酶、营养成分及其生长性能的影响[J].河南农业科学,2017,46(6):125-129,5.基金项目
石家庄市科学技术研究与发展计划项目(151500062A) （151500062A）
河北农业大学生命科学学院大学生科技创新项目 （）
