Appropriate air quality in the pig building is essential to prevent farmers’ health as well as to
increase pig performance. This on-site experiment was conducted to assess dust reduction
efficiencies of several liquid additives with spraying method in the enclosed pig building. The
mean reduction rate of total dust only after spray was approximately 30% for all the treatments
compared to initial level before spraying additives, which was found to reduce the initial level of
was about 24% which was 6% lower than only after spray. Since 3hr after spray, however, total
dust level were fluctuated variably for all the treatments besides application of the soybean oil.
Based on this result, effect of soybean oil on dust reduction in the enclosed pig building was
most prominent among liquid additives evaluated in terms of efficiency and duration.