Table IV.
Antimicrobial resistance to: | Treatment during feeding period | Resistance conversionb | No conversion | Total cattle |
---|---|---|---|---|
AMPa | No | 22 | 31 | 53 |
Yes | 24 | 18 | 42 | |
Total | 46 | 49 | 95 | |
TCY | No | 38 | 15 | 53 |
Yes | 34 | 8 | 42 | |
Total | 72 | 23 | 95 | |
SMX | No | 6 | 47 | 53 |
Yes | 5 | 37 | 42 | |
Total | 11 | 84 | 95 | |
TMP/SSS | No | 2 | 51 | 53 |
Yes | 0 | 42 | 42 | |
Total | 2 | 93 | 95 | |
TMP | No | 3 | 50 | 53 |
Yes | 0 | 42 | 42 | |
Total | 3 | 92 | 95 |
AMP — Ampicillin; SMX — Sulphamethoxazole; TCY — Tetracycline; TMP/SSS — Trimethoprim/sulfanilamide; TMP — Trimethoprim.
Resistance conversion was defined as an animal having more resistant isolates present preslaughter than at arrival.