In vitro antibiotic susceptibility patterns of Ornithobacterium rhinotracheale from commercial chickens in Argentina

Carlos Daniel Churria Gornatti, Panayiotis Loukopoulos, German B Vigo, Pablo Sansalone, Mariana A Machuca, Victorio Nievas, Miguel Piscopo, Miguel Herrero Loyola, Miguel A Petruccelli

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
5 Downloads (Pure)

Abstract

Ornithobacterium rhinotracheale is a bacterial pathogen of the poultry industry causing severe economic losses worldwide. Fifteen β-hemolytic and 23 non-hemolytic O. rhinotracheale isolates from commercial broiler and broiler breeder chicken flocks were obtained and their sensitivity to ampicillin, trimethoprim-sulfamethoxazole, gentamicin, enrofloxacin, erythromycin, florfenicol, doxycycline and fosfomycin tested by a disk diffusion method. All isolates were non-susceptible to gentamicin. Most were non-susceptible to enrofloxacin, erythromycin, trimethoprim-sulfamethoxazole, doxycycline and fosfomycin, while most were susceptible to ampicillin and florfenicol. Susceptibility to ampicillin and florfenicol was significantly higher compared to all other antibiotics tested. Overall, 34 out of 38 (89.5%) isolates were found to be multiresistant. The presence of these multiresistant O. rhinotracheale isolates is suggestive of antibiotic over and misusing in the local poultry industry. To the authors’ knowledge, this is the first work in South America reporting in vitro antibiotic susceptibility patterns of Argentine [3-hemolytic and non-hemolytic O. rhinotracheale isolates. © Asian Network for Scientific Information, 2016.
Original languageEnglish
Pages (from-to)293-296
Number of pages5
JournalInternational Journal of Poultry Science
Volume15
Issue number8
DOIs
Publication statusPublished - 2016

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