Table 5. Tetracycline antimicrobial resistance phenotype shared (highlighted in grey) between commensal bacteria (Enterococcus spp., E. coli) and Salmonella.

Resistance Phenotypes observed
Salmonella	Enterococcus spp.	E. coli	Herd ID	Resistance
Tetracyclines	Nitrofuran antibacterial	Aminoglycosides, Tetracyclines	4	AMR
Tetracyclines	Macrolides, Oxazolidinones, Nitrofuran antibacterial†	Tetracyclines, Amphenicols	4	MDR
Tetracyclines, Penicillins	Macrolides, Nitrofuran antibacterial	Aminoglycosides, Tetracyclines, Folate pathway antagonist, Amphenicols†	4	MDR
Tetracyclines, Folate pathway antagonist	Macrolides, Amphenicols	Tetracyclines	4	AMR
Tetracyclines	Tetracyclines, Nitrofuran antibacterial	Tetracyclines, Folate pathway antagonist, Amphenicols†	4	MDR
Tetracyclines	Streptogramin, Oxazolidinones	Tetracyclines	6	AMR

Notes:

^†Phenotypes that are multi-drug phenotypes.

Each row represents bacterial resistance phenotypes of bacterial isolates from a single culled dairy cow.