Farrowing Rooms
Measurements for the two farrowing rooms were taken in
the morning between 09:00 and 12:00 h. The two rooms had
similar room temperatures, ranging between 17.0°C and
27.2°C. Seasonal patterns of odor and CO2 concentration
were similar to those found in the gestation rooms. Figure 2a
shows the odor concentrations for both rooms. Odor concentration
ranged from 457 to 4,752 OU/m3, while CO2
concentration varied between 620 and 2,750 ppm. The
ventilation rates of the two rooms varied from 1.8 m3/s in
January to 5.8 m3/s in July. Figure 2b depicts the odor
emission rates from the rooms. The rooms did not show an
obvious seasonal pattern, like that for odor concentration.