Figure 3.

Resistance gene profiles (resistome) and the antimicrobial susceptibility profiles (sensitivity) of 57 S. aureus isolates presented alongside a maximum-likelihood tree generated from the core single nucleotide polymorphisms. Susceptibility was determined using a zone diffusion test following the procedures provided by the Clinical and Laboratory Standards Institute (CLSI) for penicillin (Pen), novobiocin (Nov), cefoxitin (Cef), tetracycline (Tet), ceftiofur (XNL), and oxacillin (OXA), with isolates being declared susceptible (S), intermediate (I) or resistant (R), based on CLSI recommendations. Isolate IDs identify the date the sample was collected (dd/mm/yyyy), the farm from which it was collected from (A–Q), and the animal ID number.