Table 3 summarizes the geometric means of the odor
concentrations and emission rates for each type of room.
Gestation rooms had the lowest odor concentration, which
was significantly lower than that of the nursery and finishing 1,842 OU/m3 (varied between 79 and 4,635 OU/m3), and
odor emission rates ranged from 12 to 39 OU m−2 s−1 (varied
between 2 and 70 OU m−2 s−1). Odor concentration was found
to be higher in the nursery barns than in the gestation barn,
but there was no significant difference between farrowing
and nursery barns nor between farrowing and gestation barns.
Odor emission rates from the farrowing and nursery barns
were higher than those from the gestation barns (P < 0.05),
and there was no difference in the emission rate between farrowing
and nursery barns (P > 0.05). No comparisons were
made between the finishing barns and the other types of
barns. The results were consistent with those obtained in this
study.