Table 3.
Antimicrobial resistance observed among the 381 representative Salmonella isolated from healthy dairy cattle and associated farm environments in New York.
| Resistant | Intermediate Resistance | |||
|---|---|---|---|---|
| Antimicrobials | Concentration (mg/mL) |
No. of isolates |
Concentration (mg/mL) |
No. of isolates |
| Amikacin | ≥ 64 | 0 | 32 | 0 |
| Amoxicillin/Clavulanic Acid | ≥32/16 | 52 | 16/8 | 5 |
| Ampicillin | ≥ 32 | 65 | 16 | 2 |
| Cefoxitin | ≥ 32 | 43 | 16 | 2 |
| Ceftiofur | ≥ 8 | 48 | 4 | 5 |
| Ceftriaxone | ≥ 64 | 5 | 16–32 | 28 |
| Chloramphenicol | ≥ 32 | 32 | 16 | 13 |
| Ciprofloxacin | ≥ 4 | 0 | 2 | 0 |
| Gentamicin | ≥ 16 | 0 | 8 | 1 |
| Kanamycin | ≥ 64 | 29 | 32 | 0 |
| Nalidixic Acid | ≥ 32 | 1 | - | 0 |
| Streptomycin | ≥ 64 | 41 | - | 0 |
| Sulfisoxazole | ≥ 512 | 48 | - | 0 |
| Tetracycline | ≥ 16 | 57 | 8 | 2 |
| Trimethoprim/Sulfamethoxazole | ≥ 4/76 | 2 | - | 0 |