It is estimated that agriculture contributes about 10% of the total anthropogenic greenhouse gas (GHG) emissions in Canada. About 40% of the agricultural emissions of GHG originate from livestock production. However, there exists a lot of uncertainty relative to the actual GHG emissions from livestock production systems in Canada since many of those estimates have been based on data collected in other parts of the world. In addition to GHG, odour emissions from production buildings and manure storage facilities often constitute an important source nuisances in livestock production, especially in the pig industry.

The general objective of this ongoing research project (January 2001 a