Table 3. Percentages of resistant E. coli isolates (N = 111) from faeces of weaned pigs isolated on MacConkey plates with and without 10 mg/l ampicillin (AMP).
| Antimicrobials2 | No AMP in plate | AMP in plate | FinresVet 20131, % (N = 315) | ||
|---|---|---|---|---|---|
| ANT, % (N = 26) | CON, % (N = 33) | ANT, % (N = 24) | CON, % (N = 28) | ||
| AMP | 34.6 | 33.3 | 100 | 100 | 9.5 |
| CIP | 3.8 | 6.1 | 29.2 | 28.6 | 1.9 |
| NAL | - | - | 4.2 | - | 1.3 |
| GEN | - | 3 | - | - | 1 |
| STR | 46.2 | 51.5 | 83.3 | 89.3 | 18.4 |
| FF | - | - | - | - | 1 |
| TET | 53.8 | 51.5 | 70.8 | 71.4 | 23.5 |
| CS | - | - | - | 3.6 | - |
| SU | 46.2 | 45.5 | 66.7 | 67.9 | 13.7 |
| TM | 46.2 | 45.5 | 58.3 | 67.9 | 12.4 |
| CM | 3.8 | - | - | 3.6 | 1 |
| KAN | 7.7 | 6.1 | 8.3 | - | 2.9 |
| CTX | - | - | - | - | 0.6 |
| CAZ | - | - | - | - | - |
Pigs in ANT group were treated with amoxicillin during the first day of life while CON pigs were not.
1 Data originating from the national monitoring program of the Finnish Food Safety Authority for resistance in indicator E. coli from swine faeces collected at abattoirs in 2013 (www.zoonoosikeskus.fi).
2 AMP = ampicillin, CIP = ciprofloxacin, NAL = nalidixic acid, GEN = gentamicin, STR = streptomycin, FF = florfenicol, TET = tetracycline, CS = colistin, SU = sulfamethoxazole, TM = trimethoprim, CM = chloramphenicol, KAN = kanamycin, CTX = cefotaxime, CAZ = ceftazidime.