摘要
从贵州省两个养猪场的新生仔猪腹泻病例中分离出26株大肠埃希氏菌,13株产生溶血素,O抗原分属于O_(149)(13株)、O_9(2株)和O_(55)(1株)血清型,其中10株未能确定O抗原类型。兔回肠结扎试验的结果表明,O_(149)、O_9两血清型能产生肠毒素。根据流行病学、临床症状及实验室诊断结果,本次疫病是由致病性大肠杆菌引起的仔猪黄痢。
26 E.coli strains were isolated from neonatal diarrhae piglets of 2 pig farms in Guizhou province. 13 strains could produce hemolysins. 16 of them wore classified O_(149), O_9 and O_(55) serotypes. The rest couldn' t be typed for lack of enough standard sera. The results of rahbit ligatel ileum loop experiment showed that O_(149) and O_9 serotypes could produce enterotoxins. The disease was diagnosed as piglet yellow scour caused by pathogenic E. coli.
关键词
猪
仔猪
黄痢病
病原
分离
鉴定
Piglet yellow scour
Hemolysin
rabbit ligated ileum loop experiment
enterotoxin
