Number of farms, by type of pig, reporting (A) use of oral and injectable antibiotics for prevention, (B) number of different types of active ingredient used and (C) active ingredient categorised by WHO CIA list from the farmer survey
| (A) Number (%) of farms | All farms (n=84) | By type of pig in farm (no. of farms) | |||
| Sow (n=54)* | Suckling pig (n=54)* | Nursery pig (n=54)* | Fattener (n=84) | ||
| Reporting any use of antibiotics for prevention | 48 (57.1) | 31 (36.9) | 26 (31.0) | 17 (20.2) | 26 (31.0) |
| Reporting any use of Critically Important Antimicrobials for human medicine for prevention | 26 (31.0) | 17 (31.5) | 11 (20.4) | 9 (16.7) | 14 (16.7) |
| All farms (n=48)† | Sow (n=31) | Suckling pig (n=26) | Nursery pig (n=17) | Fattener (n=26) | |
| (B)Number (%) different types of active ingredient used | |||||
| One active ingredient | 24 (50.0) | 21 (67.7) | 19 (73.1) | 9 (52.9) | 15 (57.7) |
| Two active ingredients | 12 (25.0) | 3 (9.7) | 5 (19.2) | 6 (35.2) | 5 (19.2) |
| Three active ingredients | 6 (12.5) | 4 (12.9) | 2 (7.1) | 2 (11.8) | 2 (7.7) |
| Four active ingredients | 6 (12.5) | 3 (9.7) | – | – | 4 (15.4) |
| (C)Number of farms (%) reporting use of named active ingredients (WHO ATCvet code) | |||||
| (I) Critically important antimicrobials - highest priority | |||||
| Ceftiofur (QJ01DD90) | 2 (4.2) | – | – | – | 2 (7.7) |
| Enrofloxacin (QJ01MA90) | 11 (22.9) | 4 (12.9) | 6 (23.1) | 5 (29.4) | 9 (34.6) |
| (II) Critically important antimicrobials - high priority | |||||
| Amoxicillin (QJ01CA04) | 19 (39.6) | 15 (48.4) | 5 (19.2) | 7 (41.2) | 7 (26.9) |
| Gentamicin (QJ01GB03) | 1 (2.1) | – | – | – | 1 (3.8) |
| Kanamycin (QJ01GB04) | 3 (6.3) | 3 (9.7) | 2 (7.7) | 0 | 3 (11.5) |
| Streptomycin (QJ01GA01) | 1 (2.1) | 1 (3.2) | – | – | |
| (III) Highly important antimicrobials | |||||
| Chloramphenicol (QJ01BA01) | 1 (2.1) | 1 (3.2) | 1 (3.8) | – | – |
| Lincomycin (QJ01FF02) | 5 (10.4) | 3 (9.7) | 1 (3.8) | 4 (23.5) | 4 (15.4) |
| Penicillins, combinations with other antibacterials (QJ01RA01) | 6 (12.5) | 5 (16.1) | 4 (15.4) | 1 (5.9) | 4 (15.4) |
| Tetracycline (QJ01AA07) | 6 (12.5) | 5 (16.1) | 1 (3.8) | 2 (11.8) | 2 (7.7) |
| (IV) Important antimicrobials | |||||
| Tiamulin (QJ01XQ01) | 3 (6.3) | 2 (6.5) | – | – | 1 (3.8) |
| Unknown | 22 (45.8) | 11 (35.5) | 10 (38.5) | 8 (47.1) | 11 (42.3) |
*Number of farms reporting raising pigs in this stage.
†Number of farms reporting antibiotic use for prevention.
ATCvet, veterinary anatomical therapeutic chemical; WHO CIA list, WHO list of Critically Important Antimicrobials for Human Medicine.