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

Refer
ence
Table 1. Effect of energy intake before mating upon ovulation rate, number of embryos and pregnancy rate
Feed supply, MJ ME day -1 N Parity Daily gain,
1 H: 2.6 kg 1)
L: 0
2 HHHH: 2.3, 2.3, 2.3, 2.3 kg 1)
LLHH: 0, 0, 2.3, 2.3 kg
LLLH: 0, 0, 0, 2.3 kg
LLLL: 0, 0, 0, 0
3 H: 34.3 MJ NE4) L: 21.4 MJ NE
4 H: 44.8
L: 0
5 H: 3.60 kg 1)
L: 1.8 kg
5 L: 1.8 kg 1)
H: 0, 2.7, 1.8 kg
6 H: ad lib
L: 19.3
7 H: 41.7
L: 24.2
36 2)
36 2)
107
in all
37
32
63
65
74
75
98
98
40
40
18
18
g
0 416
1
-636
(After 42 days)
1 450a
-280b
-
Ovulation rate Embryo survival,
11.6a
9.5b
14.8a
13.0
13.3
12.6b
(30 days La.)
15.2
14.8
%
89.7
88.7
80.5
80.7
77.7
77.4
(30 days La.)
Number of embryos Pregnancy rate Treatment period
10.4
8.4
11.9/11.8a
10.3/8.0b
10.7/10.5
9.7/11.3
(Embryos
day 25/litter size) 3)
Different - - - 12.0x
11.1y
(Litter size)
Different - - - 10.6
10.4
(Litter size)
Different - - - 10.5
10.4
(Litter size)
1 716
294
14.8a
13.0b
0 - 17.6a
14.0b
100
61
(Remained pregnant)
10 days before ma. until 14, 18, 22, 26, 30 or 34
days a. ma.
- Day 1, 2, 3 and 4 a.w.
- - - w.-ma. (9.1,8.2 days)
0.68
0,74
74
80
(60 days after ma.)
10.0
9.5
(Litter size)
12.9x
10.8y
86
90
77
85
(Farrowing rate)
83
80
(Farrowing rate)
On the day of w.
w.-6 days a.w.
(Mated in average on day 4.5 a.w.)
w.-f.
w.-2 days a.w., 2 days a.w.-ma., ma.-f.
- w.-ma. (17.1,16.7 days)
73
73
6 days before oestrus until 24 hour after oestrus
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