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Investigation of antimicrobial resistance in Salmonella, Escherichia coli and Campylobacter isolated from Ontario sheep flocks.

机译：从安大略羊群分离的沙门氏菌，大肠杆菌和弯曲杆菌的抗药性研究。

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摘要

This thesis examines the prevalence of antimicrobial resistance (AMR) in enteric bacteria isolated from Ontario sheep flocks, and associations between antimicrobial use (AMU) and AMR. All AMU information from 49 flocks over a 12 month period was recorded. Pooled fecal samples from initial and final visits were cultured for enteric bacteria. Isolates were tested for antimicrobial susceptibility. The prevalence of resistance was infrequent in Salmonella (0%) and E. coli (13.1%), but relatively more common in Campylobacter (45.7%). Logistic regression was used to model potential AMU (quantitative and qualitative) risk factors for tetracycline resistance in generic E. coli and Campylobacter. Risk factors in the E. coli model included the use of injectable sulfonamides or trimethoprim-sulfonamide combinations and the use of tetracycline in the feed or water. No associations were identified for Campylobacter resistance outcome variables. Although the prevalence of AMR in participating flocks was low, risk factors for resistance were identified.
机译：本文研究了从安大略省羊群分离出的肠细菌中抗菌素耐药性（AMR）的流行情况，以及抗菌素使用（AMU）和AMR之间的关联。记录了12个月内来自49个鸡群的所有AMU信息。培养来自最初和最终访问的粪便样本，以培养肠道细菌。测试了分离物的抗菌敏感性。沙门氏菌（0％）和大肠杆菌（13.1％）的耐药率不高，而弯曲杆菌（45.7％）相对较普遍。 Logistic回归用于模拟通用大肠杆菌和弯曲杆菌中四环素耐药性的潜在AMU（定量和定性）风险因素。大肠杆菌模型中的风险因素包括使用可注射的磺酰胺或甲氧苄啶-磺酰胺组合以及在饲料或水中使用四环素。弯曲杆菌抗性结果变量未发现相关性。尽管参与鸡群中AMR的患病率较低，但已确定了抗药性的危险因素。

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  • 作者

    Scott, Lisa Catherine.;

  • 作者单位

    University of Guelph (Canada).;

  • 授予单位 University of Guelph (Canada).;
  • 学科 Health Sciences Public Health.;Biology Veterinary Science.;Health Sciences Epidemiology.
  • 学位 M.Sc.
  • 年度 2010
  • 页码 170 p.
  • 总页数 170
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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