摘要
从贵州省７个种猪场发生腹泻的仔猪分离致病性细菌，对１６株病原细菌分离物进行了生化鉴定，１５株细菌符合埃希氏大肠杆菌的生化特征，其中１０株是普通大肠杆菌；５株是类大肠杆菌。两株细菌能在血琼脂平板上产生溶血素，两株细菌经抗Ｄ－甘露糖血凝试验表明能产生Ｋ８８菌毛；阳性率达１２．５％。本文还对Ｋ８８菌毛、肠毒素、溶血素与仔猪大肠杆菌病的流行病学关系进行了讨论。
The pathogenie bacteria have ben isolated from affected piglets with diarrhoea in 7 pig farms inGuizhou Province. The bio-chemical identification was conducted for 16 strains pathogenie bacteria. of them, 15 strains were in accordance with the bio-chemical charateristies of E. coli, 10 of which belonged to E. coli communis and 5 of which were E. coli communior. Haemolysis was observed in the blood aser plate for 2 strains and another 2 strains could produce K.B pili according to mannose resistant and elution. The positive rate reached 12. 5%. The relationship of K88 pili, enterotoxin, hemolysin and epidemiology of piglet colibacillosis was discussed in this paper.
