The general objective of this study was to evaluate methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O) emissions, and also odours emissions for swine operations in two provinces (Québec and Saskatchewan) under liquid manure management. More specifically, the research has been targeted at: 1. determining GHG and odour emissions from different types of swine production buildings and building floor designs; 2. determining GHG and odour emissions from different types of manure storage facilities, and 3. determining GHG and odour emissions from two manure treatment systems. Greenhouse gas and odour emission results have been expressed in terms of unit animal mass in order to allow for direct comparisons between the different sources. Researchers from four different organizations – the Institut de recherche et développement en agroenvironnement (IRDA), Prairie Swine Centre Inc. (PSCI), Université Laval and the University of Saskatchewan – actively participated in the project.