Table 3.
Salmonella detection by sample type from nine outdoor pig farms
| Pooled/individual sample | Sample type | Number of samples | Salmonella positive | Per cent positive (%) |
|---|---|---|---|---|
| Individual | Pig faeces | 4321 | 650 | 15·0 |
| Pooled | Pig faeces | 3517 | 1168 | 33·2 |
| Pooled | Run off/pooled water | 239 | 113 | 47·3 |
| Pooled | Water troughs | 169 | 40 | 23·7 |
| Pooled | Feed troughs and ad-lib feed hoppers | 117 | 24 | 20·5 |
| Pooled | Wild bird faeces | 75 | 28 | 37·3 |
| Pooled | Pig handling equipment | 45 | 9 | 20·0 |
| Pooled | Farm tracks | 22 | 6 | 27·3 |
| Pooled | Vehicles | 19 | 5 | 26·3 |
| Pooled | Rodent faeces (rats or mice) | 15 | 6 | 40·0 |
| Pooled | Disinfected surfaces | 6 | 1 | 16·7 |
| Pooled | Other farm species (cattle) | 2 | 0 | 0·0 |
| Pooled | Waste handling | 2 | 0 | 0·0 |