Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.2984.2987Escherichia coli Strains Isolated from Healthy and Septicemic Chickens]]>MoniriR. DastehgoliK. 1220071017There is a clear association between heavy antimicrobial consumption in poultry industry and the recovery of resistant bacteria. This was a case-control study of 396 E. coli strains isolated from clinically affected broiler chickens and 132 strains from healthy controls to compare the antimicrobial resistance rates. Antimicrobial resistance testing of 525 avian E. coli strains isolated in Kashan-Iran showed very high levels of resistance to 11 antimicrobials tested, especially to trimethoprim-sulfamethoxazole (98.7%) and to ciprofloxacin (69.7%). The prevalence rate of resistant E. coli to ciprofloxacin and erythromycin in the samples isolated from chickens with colibacillosis was significantly higher than healthy controls. In addition, to prevent the emergence of cross-resistance with human enteric pathogens, controlled use of these antimicrobial agents in veterinary practice is recommended.]]>Aarestrup, F.M. and H.C. Wegener,1999Campylobacter and Escherichia coli.]]>1639644Al-Ghamdi, M.S., F. El-Morsey, Z.H. Al-Mustafa, M. Al-Ramadhan and M. Hanif,1999Escherichia coli isolated from poultry workers, patients and chicken in the eastern province of Saudi Arabia.]]>4278283American Association of Avian Pathologists Guidelines to Judicious Therapeutic Use of Antimicrobials in Poultry,20052005Asai, T., A. Kojima, K. Harada, K. Ishihara, T. Takahashi and Y. Tamura,2005Escherichia coli isolated from the feces of food-producing animals in Japan.]]>58369372Blanco, J.E., M. Blanco, A. Mora and J. Blanco,1997Escherichia coli strains isolated from septicemic and healthy chickens in Spain.]]>3521842185Gorbach, S.L.,2001Kanai, H., H. Hashimoto and S. Mitsuhashi, 1983Escherichia coli strains isolated from healthy younger animals (chickens, piglets, calves) and children.]]>2710131041Kijima-Tanaka, M., K. Ishihara, A. Morioka, A. Kojima and T. Ohzono et al.,2003Escherichia coli isolated from food-producing animals in Japan.]]>51447451Lee, Y., J.K. Cho, K. Kim, R. Tak, A. Kim, J. Kim, S. Im and B. Kim,2005Escherichia coli isolated from chicken.]]>43391397Manie, T., S. Khan, V.S. Brozel, W.J. Veith and P.A. Gouws,199826253258NCCLS,1999Nazer, A.H.,1980Escherichia coli isolated from poultry and their carcasses in Iran.]]>70365371Collignon, P.J.,1999Enterococci and use of avoparcin in animal feed: Is there a link?]]>171144146Tollefson, L., S.F. Altekruse and M.E. Potter,199716709715Van den Bogaard, A.E. and E.E. Stobberingh,199958589607Yang, H., S. Chen, D.G. White, S. Zhao, P. McDermott, R. Walker and J. Meng,2004Escherichia coli isolates from diseased chickens and swine in China.]]>4234833489Zhao, S., J.J. Maurer, S. Hubert, J.F. De Villena and P.F. McDermott et al.,2005Escherichia coli isolates.]]>107215224