Detection of Salmonella gallinarum in different commercial poultry flocks in Korea

Fourteen S. gallinarum strains were isolated and confirmed by conventional biochemical tests and by recently developed allele-specific PCR assay. Test for resistance against 18 antimicrobials revealed that all the 14 strains (100%) were susceptible to amoxicillin / clavulanic acid and amikacin. The resistance in increasing orders was recorded against doxycycline (7.1%), cefazoline and cefotaxime (14.3%), chloramphenicol and neomycin (21.4%), kanamycin (28.5%), tetracycline and sulphamethoxazole / trimethoprim (35.7%), ciprofloxacin and gentamicin (50%), ampicillin (57.1%), enrofloxacin (64.3%), streptomycin (85.7%), nalidixi acid (92.8%), erythromycin and novobiocin (100%). Continuous vigilance of FT in commercial poultry flocks in Korea along with monitoring of the antibiotics resistance and prudent use of antibiotics in the treatment of FT is essential.