猪流行性腹泻病毒和大肠杆菌混合感染的诊断

Porcine Epidemic Diarrhea Virus and E.coli Infection in Laboratory Diagnosis and Susceptibility Testing

2016年4月,大庆某猪场发生一起以2-7日龄哺乳仔猪腹泻、脱水和高死亡率为特征的传染病,发病率为30%,死亡率达50%以上,给猪场造成了很大的经济损失。根据流行病学调查、临床症状观察、病畜剖检和实验室诊断,最终确诊为猪流行性腹泻与大肠杆菌混合感染。对分离细菌进行药敏试验,结果显示,盐酸头孢噻呋钠、硫酸头孢喹肟和多黏菌素B对大肠杆菌高度敏感,而庆大霉素和卡那霉素有一定耐药性。

April 2016, a pig farm in Da Qing occurred 2 to 7-day-old piglets diarrhea, dehydration and high mortality characteristics of infectious diseases, the incidence rate was 30% and the mortality rate of more than 50%, make farms caused great economic losses. According to epidemiological investigation, clinical observation, autopsy and laboratory diagnosis of sick animals,and ultimately diagnosed as porcine epidemic diarrhea and E.coli infection. Isolated bacteria susceptibility test results showed that sodium hydrochloride ceftiofur, cefquinome sulfate and polymyxin B against E.coli highly sensitive to gentamicin and kanamycin have some resistance.