Additional file 1 of Occurrence of Escherichia coli non-susceptible to quinolones in faecal samples from fluoroquinolone-treated, contact and control pigs of different ages from 24 Swiss pig farms

Additional file 1. Minimal inhibitory concentrations (MICs) of nalidixic acid and ciprofloxacin and counts of colony forming units of 254 randomly selected Escherichia coli isolates of faecal samples of pigs of G1-G5 at different ages