Percentage of antimicrobial resistance gene presence in C. jejuni isolates from NAE-raised broilers (n = 44). The bar plots illustrate the percentage of antimicrobial resistance gene presence in C. jejuni isolates obtained from the cloacal swab of NAE-raised broilers. Six antibiotic resistance genes [aph(3′)-IIIa, aph(2″)-Ig, blaOXA-61, blaOXA-184, tet(O), and ermB] associated with resistance against 5 antibiotic classes (aminoglycoside, β-lactamase, tetracycline, fluoroquinolones, macrolide) were tested.