Antibiotic resistance profiles of 23 S. zooepidemicus isolates. The isolates were classified as resistant (R), intermediate (I), or susceptible (S) to tested antibiotics. Antibiotics: AMC: amoxicillin-clavulanate; AMP: ampicillin; AK: amikacin; EFT: ceftiofur; CRO: ceftriaxone; ENR: enrofloxacin; CN: gentamicin; K: kanamycin; IMI: imipenem; MRP: meropenem; P: penicillin; S: streptomycin; SXT: sulfamethoxazole-trimethoprim; TE: tetracycline. Since 22 strains were tested to ENR, 21 to K, 22 to IMI, 22 to MRP, 20 to S, 21 to SXT and 21 to TE, a maximum error of 4.3% (1/23 × 100 = 4.3%) was considered.