Table 5.
MIC of various antibiotics for common bacteria
| Bacteria | MIC90 (ng/mL; [reference]) | |
| Enrofloxacin | E. coli | 30-125 (20) |
| S. aureus | 120-250 (20) | |
| Enterococcus spp. | 1000-2000 (20) | |
| Pseudomonas aeruginosa | 1000-8000 (20) | |
| P. multocida | 500 (27) | |
| Doxycycline | M. pneumonia | 500 (26) |
| Pasteurella spp. | 125 (27) | |
| Amoxicillin | S. aureus | 50 (20) |
| E. coli | 5000 (20) | |
| S. pseudintermedius | 2000 (20) | |
| C. perfringens | 50 (20) | |
| P. multocida | 250 (27) | |
| TMS | S. xylosus | >2000 (25) |
| K. pneumonia | <500 (20) | |
| E. coli | <500 (20) | |
| β-hemolytic streptococci | 2000 (20) | |
| Pasteurella spp. | 250 (27) |
The bacteria–antibiotic combinations represent common pathogenic bacteria in veterinary medicine. MIC90 values for ampicillin were used interchangeably with those for amoxicillin. Systemic infections with bacteria in bold can be treated reasonably effectively with the corresponding antibiotic. Note that most of the bacteria isolated during common murine infections lack published MIC90 values for various antibiotics.