WMI groups in parity 1 (days) | n | Parity at removal | Lifetime piglets born alive | Lifetime non-productive days | Annualized lifetime piglets born alive | Annualized lifetime piglets weaned |
---|---|---|---|---|---|---|
Mean (± SE) | ||||||
0–3 | 5909 | 5.6 (0.07)b | 67.0 (0.90)b | 76.5 (1.72)de | 28.5 (0.21)ab | 24.5 (0.17)b |
4 | 43,178 | 5.8 (0.06)a | 71.3 (0.80)a | 77.1 (1.59)e | 28.7(0.19)a | 25.0 (0.16)a |
5 | 55,378 | 5.8 (0.06)a | 70.8 (0.79)a | 78.3 (1.58)d | 28.4 (0.19)b | 24.9 (0.16)a |
6 | 11,377 | 5.6 (0.06)b | 68.6 (0.84)b | 81.1 (1.65)c | 28.0 (0.20)c | 24.7 (0.17)b |
7–20 | 18,219 | 5.5 (0.06)c | 67.1 (0.82)c | 88.3 (1.62)b | 27.8 (0.20)d | 24.3 (0.17)b |
21 or more | 9991 | 5.1 (0.06)d | 62.3 (0.85)d | 108.8 (1.66)a | 26.6 (0.20)e | 22.9 (0.17)c |