广东地区鸭疫里氏杆菌的血清型及抗药性情况调查

Serotypes and drug resistances of Rimerella anatipestifer isolates from Guangdong districts

对2006～2008年间从广东省规模化鸭场罹患鸭传染性浆膜炎的病鸭中分离的鸭疫里氏杆菌的血清型和抗药性流行情况进行了调查和分析。在122个鸭场中共分离鉴定出鸭疫里氏杆菌86株。平板凝集试验结果表明血清1型菌株有81株，占总分离株的94．18％；其他血清型有8型2株，4型、3型和10型各1株，提示血清1型仍是广东省流行的优势血清型。以纸片法测定所分离菌株对氟苯尼考等13种常用抗菌药物的敏感性，结果显示广东地区鸭疫里氏杆菌抗药性严重，其中仅对阿莫西林、氨苄青霉素、头孢噻吩和氟苯尼考相对敏感，敏感菌株的比例分别为82．55％、77．91％、82．55％和81．39％，对其他抗菌药物均有抗性，75．58％的菌株同时对5种以上的抗菌药物具有多重抗药性，且不同地区鸭疫里氏杆菌分离株的药物敏感性也存在明显差异。

The serotypes and drug resistances of 86 Rimerella anatipestifer isolates from 122 duck farms in Guangdong Province during 2006 - 2008 were determined. The serotyping results indicated the predominant serotype of R. anatipestifer in Guangdong was serotype 1, which account for 94. 18% of all isolated strains. The in vitro susceptibilty test results showed that majority of the bacterial isolates were found sensitive to Amoxicillin （82. 55% ）, Benzylpenicillin （77.91% ） , Cefalotin （82.55 % ）, and Florfenicol （8 I. 39% ）. However, most of the isolates were resistant to some commonly used antibiotics, such as Ciprofloxacin, Vibramycin, and Levofloxacin, especially to Enrofloxacin. Furthermore, 75.58% of the isolates were simultaneously resistant to more than 5 antibiotics.