TABLE 5.
Pig density and environmental factors in swine houses
| Factor | Mean ± SD
|
|||||
|---|---|---|---|---|---|---|
| Breeding | Farrowing | Nursery | Growing | Finishing | Overall | |
| Surface area of stalls (m2) | 534.3 ± 190.4 | 529.8 ± 165.9 | 546.5 ± 193.4 | 585.7 ± 542.5 | 935.7 ± 419.2 | 681.0 ± 362.4 |
| No. of hogs/stall | 175.7 ± 94.1 | 70.0 ± 25.9 | —a | 708.7 ± 413.2 | 786.7 ± 479.9 | 348.2 ± 429.8 |
| No. of piglets/stall | — | 663.3 ± 245.6 | 933.8 ± 557.9 | — | — | 319.4 ± 479.5 |
| Hog density (no./m2) | 0.32 ± 0.16 | 0.10 ± 0.00 | — | 0.85 ± 0.24 | 0.78 ± 0.25 | 0.41 ± 0.39 |
| Piglet density (no./m2) | — | 1.23 ± 0.14 | 1.63 ± 0.73 | — | — | 0.57 ± 0.79 |
| Wind velocity (m/s) | 0.80 ± 0.44 | 0.61 ± 0.48 | 0.60 ± 0.38 | 0.74 ± 0.34 | 0.74 ± 0.39 | 0.7 ± 0.4 |
| Temp (°C) | 30.37 ± 2.10 | 30.67 ± 2.13 | 30.57 ± 2.30 | 30.62 ± 2.45 | 30.48 ± 2.23 | 30.54 ± 2.24 |
| Relative humidity (%) | 61.80 ± 8.80 | 61.43 ± 8.38 | 62.58 ± 8.67 | 61.85 ± 8.37 | 62.45 ± 8.33 | 62.02 ± 8.51 |
a
—, not applicable.