Table 1 Descriptive data of the sows, the farrowing process, and the litter performance
From: Relationship between piglets’ survivability and farrowing kinetics in hyper-prolific sows
Variable | Mean ± SE | Min | Max | Observations |
|---|---|---|---|---|
Parity | 3.3 ± 0.3 | 1 | 9 | 58 |
Gestation length (days) | 115.8 ± 0.1 | 115 | 117 | 58 |
Sow’s rectal temperature 24h after farrowing | 38.0 ± 0.1 | 37.5 | 39.5 | 58 |
Subsequent weaning to estrus interval (days) | 3.8 ± 0.1 | 1 | 5 | 53 |
Total born (n) | 20.6 ± 0.6 | 9 | 31 | 58 |
Live born (n) | 16.4 ± 0.6 | 5 | 24 | 58 |
Stillborn (n) | 3.3 ± 0.4 | 0 | 16 | 58 |
Stillborn (%) | 15.4 ± 1.7 | 0 | 64 | 58 |
Mummified piglets (n) | 0.9 ± 0.2 | 0 | 9 | 58 |
Mummified piglets (%) | 4.2 ± 0.9 | 0 | 42 | 58 |
Farrowing duration (min) | 411.3 ± 31.6 | 128 | 1222 | 58 |
Average birth interval (min) | 20.6 ± 1.7 | 6 | 87 | 58 |
Piglet’s mortality 24h after birth (%) | 5.3 ± 1.0 | 26 | 0 | 58 |
Piglet mortality between 24h post-farrowing and weaning (%) | 20.6 ± 1.6 | 46 | 0 | 58 |
Backfat entrance (mm) | 15.6 ± 0.5 | 8 | 27 | 58 |
Backfat farrowing (mm) | 14.7 ± 0.4 | 9 | 24 | 58 |
Backfat weaning (mm) | 12.8 ± 0.4 | 8 | 22.5 | 57 |
Average litter daily gain until weaning (kg) | 2.13 ± 0.1 | 0.7 | 3.1 | 58 |
Colostrum yield (g) | 4558 ± 168 | 7578 | 725 | 58 |