System I (Straw bed) | System II (pen) | Sows and gilts (both systems combined) | |||
---|---|---|---|---|---|
(n = 120) | (n = 138) | (n = 258) | Liveborn (LSM) | ||
Parity 1 | 15 | 1 | 16 | 13.1 | A |
Parity 2 | 30 | 63 | 93 | 16.2 | B |
Parity 3 | 30 | 36 | 66 | 16.7 | B |
Parity 4 | 29 | 23 | 52 | 16.7 | B |
Parity 5 | 13 | 7 | 20 | 15.4 | AB |
Parity 6 | 3 | 7 | 10 | 14.3 | AB |
Parity 7 | 0 | 0 | 0 | - | - |
Parity 8 | 0 | 0 | 0 | - | - |
Parity 9 | 0 | 1 | 1 | 14.8 | AB |
Mean ± SD | 3.0 ± 1.3 | 3.0 ± 1.3 | 3.0 ± 1.3 |