TABLE 6.

Major multidrug resistance patterns of C. jejuni and C. coli plus other Campylobacter species isolated from conventional and organic poultry operations

Operation type (no. of isolates)No. (%) of multidrug-resistant strainsResistance patternb
C. jejuniC. coliaTotal
Conventional broiler farms (167)15 (8.98)015 (8.98)TET-KAN-CIP-NOR-NAL
Organic broiler farms (165)4 (2.42)7 (4.24)11 (6.67)TET-KAN-CLI-ERY
Conventional turkey farms (201)59 (29.35)104 (51.74)163 (81.09)cTET-KAN-CLI-ERY-CIP-NOR-NAL
Organic turkey farms (161)4 (2.48)4 (2.48)8 (4.97)TET-KAN-CLI-ERY
  • a C. coli and other Campylobacter species.

  • b AMP, ampicillin; CIP, ciprofloxacin; CLI, clindamycin; ERY, erythromycin; KAN, kanamycin; NAL, nalidixic acid; NOR, norfloxacin; TET, tetracycline.

  • c The prevalence of multidrug-resistant Campylobacter strains in conventionally raised turkeys was significantly higher (P < 0.05) than that of other operation types.