肉鸡大肠杆菌的分离鉴定

Isolation and Identification to E Coli in Broiler

从豫、鲁、冀接壤地区部分肉鸡场送检的病料中分离出49株大肠杆菌，确定42株菌分属11个血清型，其中O2、O78、O1、O74、O11为主要血清型，分别占分离株的26．2％、19．0％、11．9％、9．5％和9．5％，表明该地区血清型复杂。药敏试验结果表明，所分离的49株大肠杆菌对丁胺卡那霉素、氟本尼考、头孢噻呋最敏感，高敏菌株达94％～100％，可作为防治肉鸡大肠杆菌病的首选药物。

49 strains E Coli were separated from the disease meterals of several table chicken feeding factories in the contig uous area of Henan,Shandong and Hebei provinces,and 42 strains were confirmed as belonging to 11 serum types. The chief se rum types are O2 ,O78 ,O1,O74 ,and O11 ,with the percentage of 26.2% ,19.0% ,11.9% ,9.5% and 9.5% resp,which indicated the complexity of serum types in this area. The testing of sensitivity to drugs,showed that the 49 separated strains of E Coli are most Sensitivity to amikain florfenicol and cefotaxime,with the highsensitive strains reaching 94% ～100%. So they can be the chief choosed drugs to prevent and cure this epidemic disease.