Antimicrobial Resistance of Actinobacillus pleuropneumoniae, Streptococcus suis, and Pasteurella multocida Isolated from Romanian Swine Farms

Antimicrobial resistance is an important health issue in human and veterinary medicine. The aim of this study was to monitor the antimicrobial three most bacteria involved porcine respiratory disease. A total 465 isolates were tested during 2017–2022 period for susceptibility Actinobacillus pleuropneumoniae (n = 137), Streptococcus suis 207), Pasteurella multocida 121) by disk diffusion method. results interpreted CLSI breakpoints, where available. High rates (from 90 >99%) observed cefquinome, ceftiofur, amoxicillin + clavulanic acid, amoxicillin, penicillin, ampicillin, florfenicol, enrofloxacin, marbofloxacin, trimethoprim–sulfamethoxazole. A. showed high streptomycin (77%), gentamycin (45%), tilmicosin (39%) erythromycin (33%), oxytetracycline (19%), tetracycline (18%). For S. suis, highest (98%), (75%), (72%), doxycycline (52%), (51%). P. presented a rate (63%), (29%), (13%), (14%). Bacteria maintained against agents usually used mainly tract pathogens swine. Resistance streptomycin, tetracycline, oxytetracycline, all