Pig farmers n=40 Median (range) |
Poultry farmers n=36 Median (range) | p Value (Mann-Whitney U test) | |
Total dust (mg/m3) | 4.0 (1.1–13.8) | 7.0 (0.4–21.8) | <0.001 |
Endotoxin content in total dust (ng/m3) | 58.0 (1.3–1101.7) | 257.6 (19.0–1634.8) | <0.001 |
Total fungi (n/m3) | 8.7×106(<DL–1.4×108) | 2.0×107(<DL–1.1×109) | 0.02 |
Total bacteria (n/m3) | 4.2×108(<DL–1.6×109) | 4.7×109(2.7*107–4.2×1010) | <0.001 |
Ammonia (ppm) | 6 (<DL–14) | 12 (<DL–40) | 0.02 |
CO2(ppm) | 1200 (800–2500) | 2100 (600–4100) | <0.001 |
Temperature (°C) | 19.9 (15.9–22.3) | 16.2 (4.2–25.4) | <0.001 |
Air humidity (%) | 75 (60–86) | 71 (54–96) | 0.10 |
Air velocity (m/s) | 0.23 (0.06–0.52) | 0.01 (0.00–0.29) | <0.001 |
DL=detection limit.