Greenhouse gas emissions by the livestock sector could be cut by as much as 30 percent through the wider use of existing best practices and technologies. FAO conducted a detailed analysis of GHG emissions at multiple stages of various livestock supply chains, including the production and transport of animal feed, on-farm energy use, emissions from animal digestion and manure decay, as well as the post-slaughter transport, refrigeration and packaging of animal products. Tackling Climate Change Through Livestock represents the most comprehensive estimate made to-date of livestock's contribution to global warming – as well as the sector's potential to help tackle the problem. Tackling Climate Change Through Livestock is aimed at professionals in food and agriculture as well as policy makers.