Prevalence and antibiotic resistance of Enterococcus strains isolated from poultry

Stępień-Pyśniak, Dagmara and Marek, Agnieszka and Banach, Tomasz and Adaszek, Łukasz and Pyzik, Ewelina and Wilczyński, Jarosław and Winiarczyk, Stanisław (2016) Prevalence and antibiotic resistance of Enterococcus strains isolated from poultry. Acta Veterinaria Hungarica, 64 (2). pp. 148-163. ISSN 0236-6290

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Abstract

The aim of this study was to evaluate the frequency of occurrence of bacteria of the genus Enterococcus in poultry, to identify them by means of matrixassisted laser desorption/ionisation time-of-flight mass spectrometry (MALDITOF MS), and to analyse the antimicrobial susceptibility of the isolated strains to the drugs most frequently used in poultry. The material for the bacteriological tests was obtained mainly from the heart (97%) of the birds investigated. Of a total of 2,970 samples tested, 911 (30.7%) tested positive for Enterococcus spp. Enterococci were detected in broilers (88.1%), laying hens (5.3%), turkeys (3.9%), breeding hens (2.2%), and geese (0.4%). The most commonly identified species were Enterococcus (E.) faecalis (74.7%), E. faecium (10.1%), E. gallinarum (5.5%), E. hirae (4.6%), and E. cecorum (4.1%). The most frequent resistance properties were resistance to sulphamethoxazole/trimethoprim (88%), tylosin (71.4%), enrofloxacin (69.4%), doxycycline (67.3%), and lincomycin/spectinomycin (56.1%). Only one vancomycin-resistant Enterococcus, E. cecorum from a broiler, was found.

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