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).