ADSL and escherichia coli infection: To comprehensively and accurately evaluate the effects of AMPs on different strains of E. coli, we isolated 6 strains of E. coli (E1, E9, E12, E14, E16, and E18) from poultry farms in Shanxi Province and analyzed their resistance to penicillin, florfenicol, ciprofloxacin, enrofloxacin and gentamicin, which are commonly used in the aquaculture industry for the treatment of E. coli infections.