Table 4:
Minimum Inhibitory Concentration Antimicrobial Susceptibilities for Gram-negative isolates
| Study ID | Isolate | AMX | AMC | IMP | CEPH | CEFO | CEFPO | CEFOT | CEFTZ | CEFTF |
|---|---|---|---|---|---|---|---|---|---|---|
| A1 | E. coli | R | 8 | <0.25 | >64 | 1 | 2 | S | <0.12 | <1 |
| A1 | Klebsiella spp. | R | 4 | <0.25 | 4 | <0.5 | <0.25 | S | <0.12 | <1 |
| D2 | Acinetobacter | N/A | N/A | S | N/A | S | S | S | S | N/A |
| L1 + L2 | E. coli | >32 | R | <0.25 | >64 | >8 | >8 | R | 32 | >8 |
| L2 | P. mirabilis | >32 | N/A | N/A | >64 | <0.5 | <0.25 | S | <0.12 | <1 |
| Study ID | Isolate | AMK | GM | CIP | ENO | MBO | DX | CHLOR | TMS | |
| A1 | E. coli | <2 | <1 | <0.06 | <0.12 | <0.5 | 1 | <2 | <20 | |
| A1 | Klebsiella spp. | <2 | <1 | <0.06 | <0.12 | <0.5 | 1 | <2 | <20 | |
| D2 | Acinetobacter | S | S | R | R | R | S | N/A | R | |
| L1 + L2 | E. coli | <2 | <1 | <0.06 | <0.12 | <0.5 | 1 | 8 | <20 | |
| L2 | P. mirabilis | <2 | <1 | <0.06 | <0.12 | <0.5 | >16 | 4 | <20 |
Pre-study isolates are designated with the number 1 following the animal ID and post-study isolates are designated with the number 2 following the animal ID. Unshaded MICs indicate susceptibility and red-shaded MICs indicate resistant susceptibilities. Key: amoxicillin (AMX), amoxicillin-clavulanic acid (AMC), imipenem (IMP), cephalexin (CEPH), cefovecin (CEFO), cefpodoxime (CEFPO), cefotaxime (CEFOT), ceftazidime (CEFTZ), ceftiofur (CEFTF), amikacin (AMK), gentamicin (GM), ciprofloxacin (CIP), enrofloxacin (ENO), marbofloxacin (MBO), doxycycline (DX), chloramphenicol (CHLOR), trimethoprim-sulfamethaxazole (TMS).