Table 2: Antimicrobial resistance, size of plasmids and ESBL genes detected in the selected donor E. coli isolates, and their respective transconjugants and transformants.

No.Resistance profileESBL-encoding gene detected by PCRPlasmid donor (kb)Plasmid transformant/transconjugant (kb)Resistance profile of transformant/ transconjugantESBL-encoding gene transferredMode of transfer

EC7AMP, PIP, TET, CRO, FEP, NAL, SXT, CHL, CFP, CAZ, KAN, ATM , , bla CTX-M 13555AMP, PIP, TET, CRO, FEP, NAL, SXT, CFP, KAN, ATM , ,Transformation

EC10AMP, PIP, TET, NAL, SXT, CHL, CAZ, KAN, CIP, STR, GENbla TEM310310AMP, PIP, TET, NAL, SXT, CHL, CIP, STR, GENbla TEMTransformation

EC12AMP, PIP, TET, NAL, SXT, CHL, KAN, STRbla TEM5050AMP, PIP, TET, SXT, KAN, STRbla TEMTransformation

EC18AMP, PIP, TET, SXT, STR, CRObla TEM190190AMPbla TEMConjugation

EC24AMP, PIP, TET, NAL, SXT, CHL, KAN, CIP, GEN , bla CTX-M 6060AMP, PIP, TET, NAL, SXT, CHL, CIP, GEN , bla CTX-M Transformation

EC31AMP, PIP, TET, SXT, CHL, CFP, KAN, CRO, STRND9040AMP, PIP, SXT, CFPNDConjugation

EC36AMP, PIP, TET, SXT, CFP, CIP, STR, KAN, GEN, NAL, CHL, SXTbla TEM300300AMP, PIP, TET, SXT, CIP, STR, GEN, CHL, NALbla TEMTransformation

EC46AMP, PIP, STRbla TEM5050AMP, PIP, STRbla TEMConjugation