雏鸡中异源弯曲杆菌属的竞争排斥作用。
Competitive exclusion of heterologous Campylobacter spp. in chicks.
作者信息
Chen H C, Stern N J
机构信息
Poultry Microbiological Safety Research Unit, USDA Agricultural Research Service, Russell Research Center, Athens, Georgia 30605, USA.
出版信息
Appl Environ Microbiol. 2001 Feb;67(2):848-51. doi: 10.1128/AEM.67.2.848-851.2001.
Abstract
Chicken and human isolates of Campylobacter jejuni were used to provide oral challenge of day-old broiler chicks. The isolation ratio of the competing challenge strains was monitored and varied, depending upon the isolates used. A PCR-restriction fragment length polymorphism assay of the flagellin gene (flaA) was used to discriminate between the chick-colonizing isolates. Our observations indicated that the selected C. jejuni colonizers dominated the niche provided by the chicken ceca. Chicken isolates from the flaA type 7 grouping generally had numerical superiority over the human isolates when they were administered in our 1-day-old chick model. Our results suggest that it is possible to use combinations of C. jejuni chicken isolates as a defined bacterial preparation for the competitive exclusion of human-pathogenic C. jejuni in poultry.
摘要
空肠弯曲菌的鸡源和人源分离株被用于对1日龄肉鸡雏鸡进行口服攻毒。根据所使用的分离株，监测并改变竞争性攻毒株的分离比例。采用鞭毛蛋白基因（flaA）的PCR-限制性片段长度多态性分析来区分定殖于雏鸡的分离株。我们的观察结果表明，所选的空肠弯曲菌定殖菌在鸡盲肠提供的生态位中占主导地位。在我们的1日龄雏鸡模型中，flaA 7型分组的鸡源分离株在数量上通常优于人源分离株。我们的结果表明，有可能使用空肠弯曲菌鸡源分离株的组合作为一种确定的细菌制剂，用于在家禽中竞争性排除人致病性空肠弯曲菌。
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