Maintenance

12 (9)

1.5–2

14–20

40–45

50–60

Growth and finishing

16 (12)

2–4

14–16

45–50

60–70

Gestation

15 (11)

2–3

14–16

45–50

55–65

Lactation (with litter of 7–8)

17 (13)

2.5–3.5

12–14

45–50

65–75