Antimicrobial resistance of Antimicrobial resistance of Enterococcus Enterococcus spp. isolated from livestock spp. isolated from livestock

isolates of 105 isolates of Enterococcus Enterococcus spp. were selected as representative samples from different herds of pigs (n=25), spp. were selected as representative samples from different herds of pigs (n=25), cattle (n=46) and poultry (n=34). Antimicrobial susceptibility was determined according to epidemiological cattle (n=46) and poultry (n=34). Antimicrobial susceptibility was determined according to epidemiological cut-off values. The highest number of strains demonstrated epidemiological resistance to lincomycin (78%), cut-off values. The highest number of strains demonstrated epidemiological resistance to lincomycin (78%), tetracycline, (65%), fl avomycin (59%) and erythromycin (55%). The smallest number of strains was resistant tetracycline, (65%), fl avomycin (59%) and erythromycin (55%). The smallest number of strains was resistant to linezolid (1%) and tigecycline (2%). Six percent of all tested strains were epidemiologically resistant to to linezolid (1%) and tigecycline (2%). Six percent of all tested strains were epidemiologically resistant to ciprofl oxacin, vancomycin and daptomycin. ciprofl oxacin, vancomycin and daptomycin. Cattle isolates showed the most frequent resistance to fl avomycin (71%), lincomycin (54%), tetracycline (45%), streptomycin (40%) and erythromycin (40%). Enterococci isolated from pigs showed the highest resistance to tetracycline and lincomycin (92%), erythromycin (76%), kanamycin (56%) and streptomycin (52%). All strains isolated from poultry were epidemiologically resistant to lincomycin. The most frequent resistance of poultry strains was also demonstrated to tetracycline (72%), erythromycin (63%), streptomycin (50%), fl avomycin (48%) and tylosin (47%). However all strains isolated from poultry were susceptible to chloramphenicol, quinupristin/dalfopristin, linezolid and bacitracin.