EN
The aim of the research was the determination of resistance of 387 Campylobacter sp. strains isolated between 1994 and 1996 (broilers, laying hens) and 2005-2008 (broilers, laying hens, turkeys) to tetracycline, erythromycin, and gentamicin. The resistance was determined with the reference to minimum inhibitory concentration on the agar plates (MIC). Limit concentration value for tetracycline and gentamicin was measured at >8 µg/mL, while for erythromycin it was obtained at >16 µg/mL. Among the Campylobacter sp. isolates obtained in 2005-2008, tetracycline resistant strains were found, while the isolates obtained between 1994 and 1996 were tetracycline susceptible. An increase in the percentage of erythromycin intermediate susceptible strains from 2005- 2008 was reported in comparison to the isolates obtained in 1994-1996. Gentamicin susceptibility was found in 99.5% of all the Campylobacter sp. strains isolated between 1994 and 2008. These findings reveal a broad extent of antimicrobial resistance in Campylobacter isolates from poultry in Poland and underline the need for prudent use of antibiotics in poultry production to minimise the spread of antibiotic resistant Campylobacter strains.