Zhu et al. (2000) reported the results of odor emission
measurements in a 475–head nursery with mechanical
ventilation and a deep pit. Seven measurements were made
two hours apart during one sampling visit to the nursery. The
mean weight of the pigs was 20.5 kg. The means of exhaust
fan odor concentration and building odor emission rate were
765 OU m–3 and 149 OU s–1 AU–1, respectively. The mean
ventilation rate and inside temperature were 31 m3 h–1 pig–1
and 27°C, respectively.