Table 1. Comparison of farrowing performance between the pre-depopulation and post-depopulation periods.

	Parity
	1	2	3
Total pigs born (pigs)
Pre-depopulation period	11.0 ± 0.07b)	11.3 ± 0.08b)	11.9 ± 0.09b)
Post-depopulation period	11.8 ± 0.07a)	12.0 ± 0.10a)	13.0 ± 0.10a)
Pigs born alive (pigs)
Pre-depopulation period	10.2 ± 0.07b)	10.7 ± 0.08b)	11.2 ± 0.08b)
Post-depopulation period	11.1 ± 0.07a)	11.4 ± 0.10a)	12.2 ± 0.10a)
Pigs born dead (pigs)
Pre-depopulation period	0.8 ± 0.03	0.6 ± 0.03	0.7 ± 0.04
Post-depopulation period	0.7 ± 0.03	0.6 ± 0.03	0.8 ± 0.04
Piglet weight at birth (kg)
Pre-depopulation period	1.4 ± 0.01	1.5 ± 0.01	1.5 ± 0.01
Post-depopulation period	1.4 ± 0.01	1.5 ± 0.01	1.5 ± 0.01

Mean values within a column for each measurement with different letters were significantly different between the pre-depopulation and post-depopulation periods (P<0.05) (mean ± SEM).