USA 2004- 3rd Quarter (N= 269)
(Number of farms in the CD=377, 87 farms were excluded for not having data for the entire 3rd quarter and 21 farms were excluded for change in inventory >40%)
Measurement	Mean	Upper 10 percentile	Lower 10 percentile
Average parity	2.6	3.4	2
Percent multiple matings	91.08	99.5	79.9
Percent repeat services	13.17	6.7	19.9
Ave non-productive sow days	63.08	40.6	89.8
Ave parity of culled sows	4.13	2.4	5.9
Ave parity of farrowed sows	3.54	4.3	2.8
Average age at weaning	18.19	20.7	15.9
Average female inventory	1482.7	2835.9	317.2
Average gestation length	115.28	116	114
Average gilt pool inventory	85.08	180.4	0
Average mummies per litter	0.23	0.1	0.4
Average pigs born alive/litter	10.44	11.2	9.6
Average stillborn pigs	9.94	0.6	1.3
Average total pigs per litter	11.61	12.5	10.7
Culling rate	44.96	25.5	65.9
Death rate	7.75	13.4	2.6
Entry - 1st service interval	31.02	62.7	0
Farrowing interval	145.87	140	153
Farrowing rate	75.81	85.7	59.5
Litters / female / year	2.28	2.46	2.07
Litters / mated female / year	2.4	2.53	2.25
Old lits / mated female / year	2.23	2.53	1.8
Old pigs wnd / Inv. female / y	20.5	23.8	16.3
Percent less than 7 born live	11.57	7	16.6
Percent sows bred by 7 days	82.47	93.5	68.7
Pigs weaned / lifetime female	35.46	50	20
Pigs weaned per litter weaned	9.23	10	8.4
Pigs weaned per sow	9.18	9.9	8.3
Pigs wnd / female / year	20.98	23.7	18.1
Pigs wnd / mated female / yr	22.07	24.5	19.4
PWM for farrowed and weaned	12.45	8.6	16.7
Replacement rate	52.4	23.3	79.8
Weaning - 1st service interval	7.65	5.5	10.1