Table 1 Characteristics of farms included in this study
Herd | Operation | N. of sows | N. of batches |
|---|---|---|---|
1 | Farrow-to-finish | 550 | 20 |
2 | Farrow-to-wean | 1000 | 20 |
3 | Farrow-to-finish | 350 | 4 |
4 | Farrow-to-finish | 450 | 10 |
5 | Farrow-to-finish | 175 | 4 |
6 | Farrow-to-finish | 250 | 7 |
7 | Farrow-to-wean | 900 | 20 |
8 | Farrow-to-finish | 320 | 7 |
9 | Farrow-to-finish | 80 | 4 |
10 | Farrow-to-finish | 280 | 4 |