| 2002 Breeding Herd Summary for USA |
|
|
|
| MEASUREMENT |
Mean |
Upper 10% |
Lower 10% |
| Average female inventory |
1115.1 |
2621.2 |
187.6 |
| Average parity |
2.55 |
3.5 |
1.6 |
| Replacement rate |
62.91 |
32.7 |
93.3 |
| Culling rate |
41.6 |
22 |
62.5 |
| Death rate |
7.8 |
2.8 |
13.4 |
| Ave parity of culled sows |
3.8 |
5.5 |
1.7 |
| Average gilt pool inventory |
69.76 |
154.9 |
0 |
| Ave non-productive sow days |
76.78 |
46.8 |
118.4 |
| Percent repeat services |
14.33 |
7.2 |
22 |
| Percent multiple matings |
83.82 |
99.3 |
63.86 |
| Entry - 1st service interval |
31.21 |
0 |
69.2 |
| Percent sows bred by 7 days |
83.42 |
93.8 |
70.5 |
| Weaning - 1st service
interval |
7.89 |
5.6 |
10.9 |
| Ave parity of farrowed sows |
3.37 |
4.3 |
2.4 |
| Average gestation length |
115.25 |
116 |
114 |
| Farrowing interval |
148.46 |
141 |
160 |
| Farrowing rate |
72.98 |
82.7 |
61.4 |
| Average total pigs per litter |
11.25 |
12.1 |
10.5 |
| Average pigs born
alive/litter |
10.12 |
10.8 |
9.4 |
| Average stillborn pigs |
0.9 |
0.6 |
1.2 |
| Average mummies per litter |
0.23 |
0.1 |
0.4 |
| Litters less than 7 born live |
299.66 |
37 |
745 |
| PWM for farrowed and weaned |
13.12 |
8.8 |
17.9 |
| Old lits / mated female /
year |
2.2 |
2.44 |
1.88 |
| Litters / mated female / year |
2.31 |
2.495 |
2.06 |
| Litters / female / year |
2.18 |
2.42 |
1.86 |
| Pigs weaned per litter weaned |
8.98 |
9.8 |
8.2 |
| Pigs weaned per sow |
8.81 |
9.5 |
8 |
| Average age at weaning |
18.21 |
21.1 |
15.5 |
| Pigs wnd / mated female / yr |
20.28 |
23.1 |
17 |
| Old pigs wnd / Inv. female /
y |
18.73 |
22.55 |
15 |
| Pigs wnd / female / year |
19.19 |
22.4 |
16 |
| Pigs weaned / lifetime female |
30.95 |
45 |
11 |
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