动物医学进展2018，Vol.39Issue(4)：115-119,5.
脂多糖应激对肉仔鸡生长性能、肠道微生物菌群和肉品质的影响
Effects of Lipopolysaccharide Stress on Growth Performance,Intestinal Microflora and Meat Quality in Broilers
摘要
Abstract
To investigate the effects of lipopolysaccharide stress on growth performance,intestinal microflo-ra and meat quality in broilers,the optimal dosage LPS as immune stress model was determined for clarif-ying the immune stress and metabolic changes in animal growth and development from the angle of nutri-tion to develop anti immune stress drugs.120 broilers were randomly divided into 4 groups (control group, group Ⅰ,group Ⅱ,group Ⅲ),respectively in 16,18,20 days of ages,groups Ⅰ,Ⅱ,Ⅲ were intraperitoneal injected with lipopolysaccharide 100,500,1 000 μg/kg,the control group injected with saline,test for a pe-riod of 42 d.The average daily weight gain,average daily feed intake,feed conversion ratio,Escherichia co-li,Lactobacillus,Bifidobacterium,slaughter rate,semi eviscerated rate,eviscerated rate,meat color,pH, shear force,water loss rate and other indicators were measured to analyz the effects of different doses of li-popolysaccharide on growth performance,intestinal microflora and meat quality in broilers.The results showed that compared with control group,the average daily feed intake,average daily weight gain,the number of Lactobacillus,Bifidobacterium,a? and pH were significantly decreased (P<0.05),Escherichia coli,water loss rate increased significantly(P<0.05)in group Ⅰ,Ⅱ,Ⅲ ;compared with and group Ⅰ,the average daily feed intake,average daily gain,the number of Bifidobacterium,pH decreased significantly(P<0.05),the number of Escherichia coli and water loss rate were significantly increased(P<0.05)in groups Ⅱ,Ⅲ;compared with group Ⅱ,the average daily weight gain was significantly decreased (P<0.05),the water loss rate significantly improved (P<0.05)in group Ⅲ.The lipopolysaccharide can cause intestinal microflora balance changes,resulting in a decline in broiler growth performance,slaughter performance and meat quality,and the more stress strength,the more negative effect.关键词
脂多糖/肉鸡/生长性能/肠道微生物菌群/屠宰性能/肉品质Key words
lipopolysaccharide/broiler/growth performance/intestinal microflora/slaughter performance/meat quality分类
农业科技引用本文复制引用
马邯生,林婧,马贵达,石玉祥,史瑞雅..脂多糖应激对肉仔鸡生长性能、肠道微生物菌群和肉品质的影响[J].动物医学进展,2018,39(4):115-119,5.基金项目
河北省自然科学基金项目(C015402110) （C015402110）
