Table 1 General information regarding the six pig farms sampled in this study.
Farm | Duration of operation | Breeding information | Florfenicol usage | ||||
|---|---|---|---|---|---|---|---|
Total number of animals | Annual hog output | Sows | Duration of usage | Purposes | Approx. Annual dosage in past three years (metric ton) | ||
Farm 1/HN-S-1 | 19 years | 158000 | 150000 | 8000 | 8 years | prevention | 2.88 |
Farm 2/HN-S-2 | 18 years | 58000 | 55000 | 3000 | 9 years | prevention | 0.63 |
Farm 3/HN-S-3 | 20 years | 37000 | 35000 | 2000 | 10 years | prevention | 0.72 |
Farm 4/HN-S-4 | 4 years | 8480 | 8000 | 480 | 4 years | therapy | 0.11 |
Farm 5/HN-S-5 | 4 years | 25600 | 24000 | 1600 | 4 years | therapy | 0.28 |
Farm 6/HN-S-6 | 3 years | 52500 | 50000 | 2500 | 3 years | therapy | 0.30 |
