Resumo

OSUNA CHAVEZ, Reyna Fabiola et al. Antimicrobial resistance of Gallibacterium anatis isolates from breeding and laying commercial hens in Sonora, Mexico. Rev. mex. de cienc. pecuarias [online]. 2017, vol.8, n.3, pp.305-312. ISSN 2448-6698.  https://doi.org/10.22319/rmcp.v8i3.4506.

It was able to identify 23 isolates of Gallibacterium anatis through conventional culture and biochemical tests, and identification confirmed through PCR method. A disk diffusion test determined antimicrobial resistance to commonly used antibiotics in the poultry area. Isolates were more susceptible to ceftiofur (73 %) and florfenicol (68 %). All isolates showed marked resistance to penicillin, tylosin, lincomycin, ampicillin, enrofloxacin, oxytetracycline, norfloxacin and cephalexin. The presence of Gallibacterium anatis is associated with respiratory and reproductive problems in populations of commercial laying hens. Isolates showed marked resistance to different antibiotics, probably due to excessive medication in the presence of this organism.

Palavras-chave : Gallibacterium anatis; PCR; Resistance; Susceptibility; Antimicrobials.