ABSTRACT
This chapter aims to document internal concentrations of airborne dust, endotoxins, microorganisms and ammonia in different types of piggery buildings used in commercial production systems in Australia. It also aims to calculate, using refereed methodology, the emission levels of airborne dust, endotoxins, microorganisms and ammonia from different types of piggery buildings in Australia. However, the potential effects of high ammonia emissions from piggery buildings on the rural environment need to be also considered. The emissions per animal were very high for farrowing and dry sow sheds, because in these sheds are relatively small number of animals are housed, compared to weaner, grower or finisher buildings. Therefore, when the overall emission is divided by the relatively small number of animals, the resulting figure is relatively large. On the other hand, in weaner buildings the emission per animal is always relatively small, due to the large number of weaner pigs in these buildings.
