USA 2004- 3rd Quarter (N= 265)
Measurement	Mean	Upper 10 percentile	Lower 10 percentile
Average parity	2.72	3.4	2.1
Percent multiple matings	88.17	99.5	76.9
Percent repeat services	11.79	5.5	18.6
Ave non-productive sow days	58.65	36.9	82.3
Ave parity of culled sows	4.3	5.8	2.7
Ave parity of farrowed sows	3.62	4.3	2.9
Average age at weaning	18.51	21	16
Average female inventory	1384.05	2756	288.3
Average gestation length	115.45	116	115
Average gilt pool inventory	62.71	146.2	0
Average mummies per litter	0.24	0.1	0.4
Average pigs born alive/litter	10.45	11.2	9.6
Average stillborn pigs	0.96	0.6	1.3
Average total pigs per litter	11.66	12.7	10.7
Culling rate	40.56	20.9	61.9
Death rate	7.4	1.8	13.1
Entry - 1st service interval	28.69	61.3	0
Farrowing interval	147.77	141	158
Farrowing rate	75.27	86.7	56.8
Litters / female / year	2.32	2.47	2.12
Litters / mated female / year	2.42	2.54	2.26
Old lits / mated female / year	2.19	2.5	1.71
Old pigs wnd / Inv. female / y	20.09	23.3	16.4
Percent less than 7 born live	11.54	7	17.2
Percent sows bred by 7 days	86.13	94.8	75.4
Pigs weaned / lifetime female	36.66	50	24
Pigs weaned per litter weaned	9.25	10	8.4
Pigs weaned per sow	9.18	10	8.4
Pigs wnd / female / year	21.32	23.8	18.6
Pigs wnd / mated female / yr	22.27	24.8	19.5
PWM for farrowed and weaned	12.57	8.4	16.9
Replacement rate	50.56	20.3	78
Weaning - 1st service interval	7.14	5.4	8.9