2000 PigCHAMP Breeding Herd Summary in Korea
Measurement	Average	Median	Upper 25%	Upper 10%
BREEDING PERFORMANCE
Repeat services, %	12.4	10.8	9	8.1
Multiple matings, %	92.7	98.2	99.4	99.7
Entry-to-service interval, days	39.2	30.6	12.6	-
Sows bred by seven days, %	85.6	87	88.3	78.9
Weaning-to-first-service interval	6.74	6.7	6	5.2
Average nonproductive days	57.2	58.2	47.7	45.7
FARROWING PERFORMANCE
Average gestation length	114.5	114	114	114
Average parity of farrowed sows	3.59	3.7	4.1	4.7
Farrowing interval	149	149	146	145
Farrowing rate, %	76	77.2	80.1	83.3
Average total pigs/litter	10.9	11	11.2	11.7
Average pigs born alive/litter	10.2	10.2	10.7	11
Average stillborn pigs	0.5	0.5	0.4	0.4
Average mummies/litter	0.1	0.1	0.1	0
Percent < 7 born alive	11.1	10.9	9.5	7.8
PWM for farrowed and weaned	10	10.1	7.8	5.8
Litters/female/year	2.26	2.28	2.33	2.38
Litters/mated female/year	2.36	2.38	2.42	2.43
Old litters/mated female/year	2.28	2.27	2.34	2.45
Litters/farrowing crate/year	7.1	8.2	9.1	19.5
WEANING PERFORMANCE
Pigs weaned/litter weaned	9.2	9.2	9.6	9.9
Average age at weaning	21.7	21.9	19.8	18.6
Adjusted 21-d litter weight (kg)	57.5	57	62	64
Pigs weaned/sow	9.2	9.1	9.6	9.8
Pigs weaned/mated female/year	21.7	21.5	23.4	23.9
Old pigs weaned/mated female/year	20.9	20.8	22.2	23.7
Pigs weaned/female/year	20.8	21	21.9	22.9
Pigs weaned/lifetime	30.8	34	41	47
Pigs weaned/farrowing crate/year	64.9	68.7	88	178
POPULATION
Average female inventory (AFI)	745	640	1067	1476
AFI/farrowing crate	5.3	4.3	4.5	10.3
Average gilt pool inventory	33	23	39	89
Sow:boar ratio	41	31	59	76
Average parity	3	2.9	3.4	3.7
Replacement rate, %	47.6	44.5	32.5	27.1
Culling rate, %	28.6	30.2	15.3	8.1
Death rate, %	5.3	3.7	1.7	1.3
Average parity of culled sows	3.8	4.3	4.8	5.6
Farm n=25;  Median is 50th percentile.