Trait | Herd type | p-value | |
---|---|---|---|
 | Organic LS means (Range) | Conventional LS means (Range) |  |
Total number of piglets born per litter | 13.6 (12.7-13.8) | 12.8 (12.2-13.5) | 0.0006 |
Number of piglets born alive per litter | 12.4 (10.8-12.9) | 12.0 (11.7-12.6) | 0.6 |
Number of piglets stillborn per litter | 1.2 (0.9-2.2) | 0.8 (0.5-0.9) | <0.0001 |
Number of piglets weaned per litter | 9.8 (9.0-10.8) | 10.0 (9.7-10.4) | 0.06 |
Length of nursing period (=age at weaning) in days | 50 (40–58) | 34 (33–39) | <0.0001 |
Farrowing interval in days | 178 (169–191) | 158 (156–165) | <0.0001 |