From: Study on the influence of different production factors on PSY and its correlation
Mean | Median | Minimum | Maximum | SD | |
---|---|---|---|---|---|
Total pig farms (n = 603)/Top 5% pig farms (n = 29) | |||||
Total number of piglets per littera | 11.3/12.1 | 11.4/12.2 | 9.0/10.0 | 14.9/14.9 | 1.0/0.9 |
Number of piglets born alive per litterb | 10.4/11.5 | 10.4/11.5 | 7.5/9.4 | 14.1/14.1 | 1.0/0.9 |
Number of weaned piglets per litterc | 9.4/10.5 | 9.4/10.4 | 6.8/9.0 | 12.4/12.4 | 1.0/0.6 |
Farrowing rate (%)d | 78.2/87.4 | 81.2/88.5 | 36.6/58.5 | 99.2/99.2 | 12.3/6.8 |
Stillbirth rate (%)e | 6.4/3.9 | 5.7/3.6 | 3.1/0.6 | 18.4/8.8 | 2.9/1.7 |
Mummified piglets rate (%)f | 2.0/1.4 | 1.7/1.3 | 0.6/0.0 | 9.9/5.2 | 1.2/0.9 |
Return-service rate (%)g | 14.4/6.0 | 12.9/5.0 | 2.7/1.2 | 46.9/13.0 | 8.3/3.5 |
Mating rate within 7 days after weaning (%)h | 55.7/69.2 | 58.2/69.9 | 0.0/19.2 | 85.8/83.8 | 16.5/12.6 |
Weaning to breeding intervali | 17.2/9.6 | 12.8/9.0 | 4.7/6.5 | 23.5/22.0 | 13.8/3.1 |
Non-productive daysj | 84.1/50.0 | 76.8/45.7 | 27.4/27.7 | 270.0/113.6 | 38.2/17.8 |
Production daysk | 686.5/1481.0 | 502.0/763.0 | 120.0/280.0 | 5176.0/5176.0 | 768.6/1368.1 |
Birth weight of piglets (kg)l | 1.2/1.2 | 1.2/1.2 | 1.0/1.0 | 1.6/1.5 | 0.1/0.1 |
21-day adjusted weight of piglets (kg)m | 5.7/6.0 | 5.7/6.2 | 4.4/4.9 | 7.3/7.3 | 0.5/0.5 |
Longitude | 113.8/111.4 | 113.5/109.0 | 104.8/103.2 | 128.8/123.4 | 5.6/7.1 |
Latitude | 33.9/33.8 | 35.1/34.1 | 23.3/23.4 | 47.7/42.7 | 6.0/5.3 |