1999 Breeding Herd Summary- CANADA
Measurement	Average	Median	Upper 10%	Lower 10%
BREEDING PERFORMANCE
Repeat services, %	11.7	10.8	7.6
Multiple Matings, %	86	94.5	98.5
Entry-to-service interval, day	32.9	30.8	19.4
Sows bred by seven days, %	87	88	92.2
Weaning-to-first-service interval	7.1	6.8	6
Average nonproductive days	64	59	49
FARROWING PERFORMANCE
Average gestation length	115	115	114
Average parity of farrowed sows	3.63	3.8	4.2
Farrowing interval	148	147	144
Farrowing rate, %	80	81	86.2
Average total pigs / litter	11.2	11.2	11.7
Average pig born alive / litter	10.4	10.4	10.7
	0.7	0.7	0.6
Average mummies per litter	0.2	0.2	0.1
Percent <7 born alive	10.2	9.8	7.9
PWM for farrowed and weaned	11.9	11.5	9.2
Litters / female / year	2.21	2.25	2.34
Litters / mated female / year	2.33	2.35	2.43
Old litters / mated female / year	2.33	2.37	2.46
Litters / farrowing crate / year	14.2	13.1	16.7
WEANING PERFORMANCE
Pigs weaned per litter weaned	9.1	9.2	9.5
Average age at weaning	20.9	20.4	17.7
Adjusted 21-d litter weight (lb./ kg.)	61	62	65
Pigs weaned per sow	9.1	9.1	9.5
Pigs weaned / mated female / year	20.9	21.3	22.7
Old pigs wnd / mated female / year	21.6	21.6	23.6
Pigs weaned / female / year	20	20.6	21.9
Pigs weaned / lifetime	35.8	38	47
Pigs weaned / farrowing crate / year	131	122	152
POPULATION
Average female inventory (AFI)	377	237	463
AFI / farrowing crate	6.6	5.9	7.3
Average gilt pool inventory	23	11	28
Sow: Boar Ratio	24.2	19.7	30.5
Average parity	3	3.0	3.5
Replacement rate, %	49.6	46.5	36
Culling rate, %		38.9	32.3
Death rate, %	4.7	4.3	2.7
Average parity of culled sows	4.2	4.5	5.4
Farm n=282; Median is a 50 percentile