D. Emissions from Manure Management

1. CH₄ Emissions
The methodology for estimating CH₄ emissions from livestock manure management can be summarized as follows:

• Collect livestock population data (using single livestock characterization);
• Use default emission factors or country-specific emission factors developed on the basis of manure characteristics [B_O (Maximum CH₄ producing capacity of the manure ), VS (Volatile Solid excretion rates), MCF (CH₄ conversion factor)] for each significant livestock population (i.e., species, category, or subcategory) and manure management system type.