摘要
从肠毒血症病死的4头育成牛空肠内分离到4株革兰氏阴性细菌,经生化试验、O抗原鉴定、纤毛抗原检查、ST肠毒素测定及动物感染试验证明,分离的4株细菌均为兼有K99和F41两种纤毛抗原的产ST肠毒素的O_(142)血清型致病性大肠埃希氏菌。
Isolated Four strain gram-negative bacterium from jejunum of 4 Heifers died of enterotoxemia were O142 serum pathogenicity Escherichia coli with K99 and F41 two cilium antigens, and ST enterotoxin, proved by biochemichal test, O antigen identification cilium antigen examination,ST enterotoxin assay and animal infection experiment.
出处
《黑龙江八一农垦大学学报》
1993年第2期80-83,共4页
journal of heilongjiang bayi agricultural university
关键词
育成牛
大肠杆菌
分离
鉴定
heifer
colibacillus
enterotoxemia
cilium antigen
