Toxicity Factor Detection and Analysis of Escherichia coli Isolated Strains from Calf Diarrhea Samples in Some Areas of Ningxia
The aim of this study was to investigate the prevalence and virulence factors of Escherichia coli(E.coli)in calves in Ningxia region.A total of 332 samples of diarrhea calf rectal feces were collected in Ningxia region for pathogen isolation,and 156 strains of E.coli were detected for 13 related virulence genes using PCR method.The results show that a total of 156 strains(46.99％)of E.coli were isolated,and a total of 136 strains containing virulence factors were detected.This indicates that the current positive rate of E.coli in diarrhea calves in Ningxia is relatively high,and the combination of virulence factors is complex,with irp2 being the dominant virulence factor.
国家科技期刊平台
NSTL
万方数据
