Table 1.

The antibiotics used in the study.

Generic name	Group
Kanamycin (KAN)	Aminoglycosides
Neomycin (NEO)	Aminoglycosides
Nalidixic acid (NAL)	Quinolones
Tetracycline (TET)	Tetracyclines
Spectinomycin (SPE)	Aminoglycosides
Sulfonamid (SUL)	Sulfonamides
Trimethoprim (TMP)	Folate Antogonist
Ampicillin (AMP)	β-lactam
Amoxicillin-Clavulanate (AMC)	β-lactam
Ceftiofur (EFT)	β-lactam
Chloramphenicol (CHL)	Phenicol
Florphenicol (FFC)	Phenicol
Gentamicin (GEN)	Aminoglycosides
Ciprofloxacin (CIP)	Quinolones
Trimethoprim-sulfamethoxazole (STX)	Folate antagonist-sulfonamide
Streptomycin (STR)	Aminoglycosides