| USA: 2003-3RD quarter (Number of herds= 249) | |||
| Measurement | Mean | Upper 10 percentile | Lower 10 percentile |
| Average female inventory | 1235.21 | 2706.5 | 152.2 |
| Average parity | 2.6 | 3.6 | 1.6 |
| Replacement rate | 71.68 | 31.1 | 88 |
| Culling rate | 39.04 | 18.5 | 56.1 |
| Death rate | 7.87 | 3.2 | 13 |
| Ave parity of culled sows | 3.9 | 5.8 | 2.1 |
| Average gilt pool inventory | 85.57 | 193.4 | 0 |
| Ave non-productive sow days | 74.78 | 46.7 | 110.9 |
| Percent repeat services | 14.22 | 6.9 | 21.9 |
| Percent multiple matings | 85.4 | 98.7 | 73.2 |
| Entry - 1st service interval | 28.9 | 0 | 57.8 |
| Percent sows bred by 7 days | 84.04 | 93.8 | 72.4 |
| Weaning - 1st service interval | 7.8 | 5.7 | 10.3 |
| Ave parity of farrowed sows | 3.44 | 4.4 | 2.6 |
| Average gestation length | 115.34 | 116 | 115 |
| Farrowing interval | 149.45 | 141 | 159 |
| Farrowing rate | 72.5 | 82.7 | 61.4 |
| Average total pigs per litter | 11.3 | 12.1 | 10.4 |
| Average pigs born alive/litter | 10.15 | 10.9 | 9.4 |
| Average stillborn pigs | 0.91 | 0.6 | 1.2 |
| Average mummies per litter | 0.23 | 0.1 | 0.4 |
| Percent less than 7 born live | 12.99 | 7.7 | 18.1 |
| PWM for farrowed and weaned | 13.45 | 8.8 | 17.9 |
| Old lits / mated female / year | 2.13 | 2.38 | 1.87 |
| Litters / mated female / year | 2.33 | 2.49 | 2.08 |
| Litters / female / year | 2.21 | 2.42 | 1.94 |
| Pigs weaned per litter weaned | 8.9 | 9.7 | 8.2 |
| Pigs weaned per sow | 8.77 | 9.6 | 7.9 |
| Average age at weaning | 17.95 | 20.7 | 15.4 |
| Pigs wnd / mated female / yr | 20.08 | 23.4 | 16.8 |
| Old pigs wnd / Inv. female / y | 18.31 | 21.7 | 14.8 |
| Pigs wnd / female / year | 19.06 | 22.4 | 15.9 |
| Pigs weaned / lifetime female | 31.97 | 47 | 17 |