USA 2004- Yearend Summary (N= 225)
Measurement	Mean	Upper 10 percentile	Lower 10 percentile
Number repeat services	472.42	103.00	984.00
Percent repeat services	13.17	7.10	19.90
Total number of services	3768.60	7573.00	896.00
Number of sows farrowed	3042.52	6388.00	721.00
Farrowing rate	77.72	85.40	67.80
Total pigs born	35031.81	72304.00	8220.00
Average total pigs per litter	11.51	12.40	10.70
Total pigs born alive	31399.66	65186.00	7147.00
Average pigs born alive/litter	10.34	11.20	9.40
Litters/fem/yr * ave pigs born alive per litter	23.26	26.18	19.99
Total stillborn pigs	2756.66	578.00	5953.00
Average stillborn pigs	0.92	0.60	1.30
Total mummified pigs born	866.49	82.00	1904.00
Average mummies per litter	0.25	0.10	0.40
Sows farrowed and weaned	2937.29	6075.00	690.00
Total pigs weaned	27323.94	56896.00	6239.00
Pigs weaned per litter weaned	9.10	9.80	8.30
Pre-weaning mortality	12.47	8.40	17.70
Average piglet weaning weight	12.20	14.00	11.00
Average age at weaning	18.23	20.30	16.10
Pigs wnd/mated female/yr	21.25	23.70	18.20
Pig wnd/female/yr	20.27	23.10	17.30
Ending boar inventory	17.80	33.00	0.00
Females entered	740.06	1516.00	155.00
Sows and gilts culled	607.01	126.00	1244.00
Culling rate	43.82	29.10	58.90
Sow and gilt deaths	118.83	18.00	289.00
Death rate	7.87	3.70	12.00
Ave female inv - ave gilt pool inv	1296.28	2642.20	323.90