Antimicrobial resistance phenotypes, IncA/C PCR profiles and conjugation frequencies of MDR NARMS isolates

aamikacin (Ak), amoxicillin/clavulanate (Ag), ampicillin (A), cefoxitin (Cx), ceftiofur (Ti), ceftriaxone (Ax), chloramphenicol (C), ciprofloxacin (Cp), gentamicin (G), kanamycin (K), nalidixic acid (N), tetracycline (T), streptomycin (S), sulfamethoxazole (Su), trimethoprim/sulfamethoxazole (Sxt).
bPCR amplicons tested shown in Fig. 1.
cEstimated efficiency of transfer to Y. ruckeri; expressed as the number of transconjugants per donor; all transconjugants tested positive for the IncA/C replicon.