摘要
为研究日粮中添加芽孢杆菌与抗生素对肉鸡生产性能、免疫功能及肠道发育等的影响，本试验选用900羽1日龄罗斯308内公鸡．随机分为3组，对照组饲喂基础日粮，试验1、2组分别在基础日粮中添加100g／t阿维拉霉素和300g／t芽孢杆菌HB1，每组10个重复，每个重复30羽鸡，试验期36d。结果表明：（1）试验各阶段，芽孢杆菌HB1添加组肉鸡平均日增重（ADG）均高于对照组，但差异不显著（P〉0．05），试验后期（22～35日龄）芽孢杆菌HB1添加组肉鸡料肉比（FCR）较对照组低2．66％（P〈0．05）。（2）芽孢杆菌HB1添加组肉鸡血液IgG舍量较对照组提高2．26％（P〈0．05），且其对肉鸡胸腺的发育具有促进作用。（3）与对照组和试验1组相比，芽孢杆菌HB1组肉鸡十二指肠和空肠绒毛长度与隐窝深度的比值（V／C）均显著提高（P〈0．05），回肠V／C极显著提高（P〈0．01）。由此可见，日粮中添加芽孢杆菌可以提高肉鸡生产性能，增加血液中IgG含量，促进肉鸡免疫器官和肠道的发育。
This experiment was conducted to investigate the effect of Bacillus and antibiotics on growth performance, immune indices and intestine development of broilers.Nine hundred 1-day-old roosters were randomly divided into 3 groups with 10 replicates of 30 each.The control group was fed basal diet and the others were fed basal diets supplement- ed with antibiotics （100 g/t）and Bacillus HB1 （300 g/t） respectively.The experimental period was 36 days.The results showed as follows： （1）The average daily gain （ADG） of broilers fed basal diet added with Bacillus HB1 was increased, compared with the control group （P 〉 0.05）.And during the period of 22 - 35 days,feed conversion rate （FCR） of treat- ment 2 was 2.66% lower than that of control group （P 〈 0.05）.（2）Compared with the control group ,the content of IgG in Bacillus HB1 adding group was significantly increased by 226 percent （P 〈 0.05）,as well as the development of thymus was also improved. （3）Adding Bacillus HB 1 significantly increased villus length/crypt depth （V/C）value in duodenum （P 〈 0.05） ,jejunum （P 〈 0.05） and Bacillus ileum of broilers（P 〈 0.01 ）.In conclusion,Bacillus could improve broilers growth performance, immunity function and intestinal development.
出处
《中国饲料》
北大核心
2015年第23期18-20,25,共4页
China Feed
基金
国家高技术研究发展计划(863计划)"新型饲料智能收获和精益制备技术与装备研究"
关键词
芽孢杆菌
生产性能
免疫指标
肠道发育
Bacillus
performance
immunity indices
intestine development
