Total greenhouse gas emissions from swine production systems in Canada are equal to about 3% of the total agricultural emissions (which is equal to 0.006% of the total world greenhouse gas emissions!). Today there are a number of technological and management options for reducing greenhouse gas emissions associated with manure management within those systems. However, it is important that greenhouse gas mitigation in pork production systems be addressed from an integrated aspect that that involves other agronomic, economic, environmental, health and safety, social and technical considerations. In addition to greenhouse gas emission reduction, another important issue that will need to be addressed in the short term is the adaptation of Canadian pork production systems to climate change in terms of availability of feed materials and water and on the design and management of production facilities.