Other more detailed academic papers of interest include the following:

The Swedish Institute for Food and Biotechnology (SIK) has produced two reports, one on the GHG emissions arising from the Swedish production and the other on emissions arising from the consumption of meat, milk and eggs between 1990 and 2005. The studies show the different findings you get if you take a production

This is an LCA of the production of the major agricultural/livestock commodities in the UK (Defra-funded Projects IS0205). The 10 key commodities studied were bread wheat, potatoes, oilseed rape, tomatoes, beef, pig meat, sheep meat, poultry meat, milk and eggs and the main conclusions are as follows: Nitrous oxide (N2O) is the single largest contributor to global warming potential (GWP) for all commodities except tomatoes, exceeding 80% in some cases.