益生菌降低载鸭水体有害菌和内毒素水平提高肉鸭肠道健康和生产性能的研究  

Enhancing Duck Gut Health and Production Performance by Inhibiting Enterobacteria and LPS Contamination in Living Water With Pro-biotic Microbes

作　　者：许爱红[1,2] 朱少轩 刘丽[1] 施振旦[1,2] 赵伟[2] 应诗家[2] 

机构地区：[1]华南农业大学动物科学学院,广东广州510642 [2]江苏省农业科学院畜牧研究所,江苏南京210014

出　　处：《中国家禽》2014年第13期25-29,共5页China Poultry

基　　金：江苏省农业科技自主创新资金(CX(12)3070;CX(13)3071);现代农业产业技术体系建设专项资金资助(CARS-43-16)

摘　　要：为研究降低载鸭水体革兰氏阴性菌和内毒素污染对肉鸭肠道发育和生长性能的影响,将480只1日龄雏鸭随机分成4组,每组4个重复,每个重复30只,在60d的试验期间采用"高床+水池"模式养殖至出栏。试验采用2×2因子试验设计,两处理因子分别为向饲料添加枯草芽孢杆菌和向载鸭水体应用光合细菌。结果表明饲粮添加芽孢杆菌和载鸭水体应用光合细菌均可抑制水体大肠杆菌、沙门菌和志贺氏菌含量(P<0.05),降低载鸭水体和鸭血液内毒素和皮质醇水平(P<0.05),增加肠黏膜绒毛长度(P<0.05),提高肉鸭日增重(P<0.05)。表明芽孢杆菌和光合细菌通过降低养殖水体革兰氏阴性菌和内毒素水平促进肠道吸收能力,提高肉鸭生长性能。This study aimed to investigate whether competitive reduction of pathogenic bacteria growth and lipoplysaccharide （LPS） in living water affects gut health and growth performance of growing ducks. 480 Sanshui white ducklings of 1 d old were equally allocated into 16 ＂slate floor bed＋water pool＂ pens using a 2×2 factorial design. Each treatment combination had 4 replicates of 30 birds. In the 60 days of experimental period, the ducks received 2 treatments： supplementation of Bacillus subtilis spores in the feed, and addition of photosynthetic bacteria （PSB） to the pool water. Both B. subtilis spores and PSB treatments significantly suppressed water counts of Gram-negative bacteria Escherichia coli,Salmonella and Shigella,and LPS concentrations in pond water and in duck blood （P〈0.05）. As the result, the two treatments significantly decreased plasma eortisol level （P〈0.05）, increased gut epithelia villus length （P〈0.05）, and improved weight gain （P〈0.05） of the ducks. These results indicated that treatments with Bacillus and photosynthetic bacteria can enhance duck growth by improving gut health and nutrient absorption, and alleviating stress effects,through inhibiting Gram-negative bacteria and LPS contamination in duck living water.

关 键 词：肉鸭 生长性能 光合细菌 芽孢杆菌 内毒素 

分 类 号：S959[农业科学—水产养殖]