Table 1 Summary of farm characteristics, production capacity, and assessment of feed particle size
Farm | Herd characteristics | Feed type | Particle size assessment | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
No. of sows per year | No. of 30 kg pigs produced per year | x̅ No. of nursery pigs / pen | x̅ m2 / nursery pig | x̅ Temperature nursery room in °C | GMD (μm) | GSD (μm) | < 1 mm (%) | 1–2 mm (%) | > 2 mm (%) | ||
1 | 180 | 6000 | 33 | 0.35 | 19 | Expanded meal feed | 627.8 | 2.27 | 66.7 | 19.7 | 12.6 |
2 | 535 | 16,000 | 29 | 0.37 | 18 | Pelleted | 540.7 | 1.92 | 76.4 | 20.8 | 2.7 |
3 | 850 | 28,000 | 22 | 0.49 | 19 | Pelleted | 635.7 | 2.25 | 67.6 | 19.6 | 12.8 |
4 | 240 | 7400 | 35 | 0.33 | 22 | Crushed pellets (Liquid form) | 486 | 1.83 | 82.2 | 15.3 | 2.5 |
5 | 1100 | 35,000 | 32 | 0.31 | 18 | Pelleted | 620.8 | 2.32 | 69.1 | 16 | 14.9 |
6 | 400 | 14,000 | 19 | 0.35 | 18 | Pelleted | 532.9 | 2.09 | 76.7 | 15.2 | 8 |
7 | 370 | 12,000 | 24 | 0.35 | 20 | Pelleted | 584.7 | 2.12 | 71.2 | 18.8 | 10 |
8 | 400 | 11,000 | 19 | 0.46 | 17 | Pelleted | 565.8 | 2.08 | 72.8 | 19.9 | 7.3 |
9 | 630 | 20,000 | 32 | 0.37 | 18 | Pelleted | 483.3 | 1.75 | 83.3 | 16 | 0.7 |
10 | 700 | 23,000 | 29 | 0.38 | 18 | Crushed pellets (Liquid form) | 464.6 | 1.73 | 84.6 | 15 | 0.4 |