Reproduction performances and conditions of group-housed non ...

Table 3. Effect of energy intake in mid- and late pregnancy and in several successive pregnancies upon number of embryos and pregnancy rate
Refe-
rence
1 H: 30.5
Level in treatments, MJ ME day -1 N Daily gain, g Number of embryos Pregnancy rate Treatment period
L1: 24.4
ML2: 24.4→ 18.3 1)
L2: 18.3
2 H: 37.2
M: 26.7
L: 16.2
3 M1: 2.3 kg 3)
M2: 2.0 kg
L: 1.7 kg
4 M: 28.8
L: 23.8
4 H: 35.2
M: 31.9
L: 28.8
23
23
22
23
9
9
8
20
20
20
160
164
163
153
150
- 8.3 2)
9.0
8.2
8.8
(Litter size)
41.4a
27.6b
2.3c
11.5
11.1
10.7
(Litter size)
- H: 10.8
M: 10.4
L: 11.1
(Litter size)
11.9-47.9
2.4-39.8
(Pregnancy)
59.3-40.7
53.7-32.5
47.6-16.3
(Pregnancy)
9.5a
10.0b
(Litter size)
10.3
10.7
10.6
(Litter size)
- 2 days a.w.-f
Four successive gestations
- Day 43-114 in pregnancy
- Five successive gestations
- Five successive gestations
- Six successive gestations
To be continued on next page