【摘要】 从陕西省汉中、咸阳、宝鸡等地疑似猪水肿病的病死猪体内分离到16株细菌,根据其形态、培养特性和生化特性鉴定为大肠杆菌。动物致病性试验表明,其中12株为致病性大肠杆菌,能致死小鼠。血清学鉴定出O139、O8、O2、O141共4种血清型,其中O139和O8为优势血清型。更多还原

【Abstract】 16 strains of bacteria were isolated from sick or dead piglets in shanxi. They were identified as Escherichia coli by its morphology, culture and biochemical characteristics. The pathogenic trial in mouse showed that 12 of the 16 strains were pathogenic bacteria. 12 strains were classified into 4 serotypes: O2、O8、O139、O141. The predominant O groups were O139 and O8.更多还原