Here’s a publication laying out the state of the science in estimating greenhouse gas emissions from livestock- and poultry-production systems, published by USDA in the summer of 2014. The report shows how to estimate emission rates and emission fluxes from systems producting the following species:
- Dairy Cattle
- Beef Cattle
- Swine
- Poultry
- Goats
- Americon Bison
Sources and Sinks of Greenhouse Gases from Livestock Systems