生物工程菌在鸡消化道内定居研究

Studies on Inhabition and Distribution of Biotechnical Microorganisms in the Alimentay Canal of the Chicken

利用具有卡那霉素抗性和能分泌α-淀粉酶的生物工程菌─枯草芽孢杆菌作为微生物饲料添加剂，饲喂不同发育时期的鸡，检测此菌在鸡消化道内的定居和分布情况．发现此菌可以定居在鸡消化道内，但受饲喂的时间和饲喂剂量的影响．

Bacillus subtilis Bs964 that was cloned a-amylase gene and so could secrect α-amylase, was used as forage additive of chicken. After Bs964 was fed to chicken, the chicken were dissected and their alimentary canals were taken out so as to inspect whether the bacteria could inhabit and if inhabiting, but where. We found that Bs964 could inhabit in chicken’s alimentary canals but they were influenced by the time and quantity that the chicken were fed.