TABLE 3.
Relative use (% of total weight) of active ingredients of antimicrobials used in nine swine productions systems in 2016 and 2017
| Active ingredient | 2016 | 2017 |
|---|---|---|
| Chlortetracycline | 49.3% | 40.9% |
| Oxytetracycline | 12.5% | 16.6% |
| Lincomycin | 8.2% | 9.0% |
| Penicillin | 5.8% | 7.5% |
| Bacitracin | 5.6% | 6.0% |
| Tiamulin | 5.3% | 4.7% |
| Neomycin | 2.9% | 4.0% |
| Narasin | 2.8% | 3.4% |
| Tylosin | 1.6% | 0.20% |
| Virginiamycin | 1.2% | 0.0001% |
| Carbadox | 1.0% | 1.1% |
| Tylvalosin | 0.85% | 0.86% |
| Tilmicosin | 0.68% | 2.2% |
| Sulphamethazine | 0.58% | 0.70% |
| Amoxicillin | 0.49% | 0.28% |
| Enrofloxacin | 0.23% | 0.46% |
| Trimethoprim/Sulphadiazine | 0.20% | 0.75% |
| Tulathromycin | 0.17% | 0.01% |
| Ceftiofur | 0.15% | 0.11% |
| Spectinomycin | 0.13% | 0.003% |
| Gentamicin | 0.10% | 0.06% |
| Avilamycin | 0.06% | 0.94% |
| Tetracycline | 0.03% | 0.03% |
| Sulphadimethoxine | 0.005% | 0.09% |
| Ampicillin | 0.002% | 0.0002% |
| Florfenicol | 0.002% | 0.01% |
| Bambermycins | 0.001% | n/a |
| Sulphamethoxazole | 0.00004% | n/a |