Table 1 Summary of herd sizes and production results of herds included in the study (mean ± SD)
| Â | Â | Â | Farm classification | ||
|---|---|---|---|---|---|
Herds | Â | ALL | Piglet producers | Satellites in multisite production | Farrow to finish |
(n = 81) | (n = 29) | (n = 9) | (n = 43) | ||
Sows. mean | (n) | 205 ± 211 | 185 ± 187 | 312 ± 116 | 243 ± 234 |
Sows. range | (n) | 82–1200 | 100–1100 | 156–468 | 82–1200 |
Piglets, live born/year | (n) | 25.7 ± 2.6 | 25.1 ± 4.8 | 26.0 ± 1.7 | 25.5 ± 3.1 |
Weaning age | (days) | 36.5 ± 4.4 | 37.4 ± 4.3 | 34.9 ± 0.3 | 36.2 ± 4.7 |
Weaning weight | (kg) | 10.2 ± 1.5 | 10.4 ± 1.7 | 9.8 ± 1.0 | 10.0 ± 1.4 |
Age at 25 kg | (days) | 75.3 ± 5.1 | 74.9 ± 6.5 | 77.9 ± 5.3 | 75.1 ± 3.7 |
Piglet mortality | |||||
 Pre weaning | (%) | 14.3 ± 4.1 | 15.3 ± 4.8 | 11.8 ± 3.1 | 14.0 ± 3.5 |
 Post weaning | (%) | 1.5 ± 1.0 | 1.8 ± 1.5 | 1.4 ± 1.0 | 1.4 ± 0.9 |