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This paper presents the analysis of the “methane emissions” global impact domain. These emissions include methane emitted directly from livestock digestive processes (i.e., enteric fermentation) and methane emitted from manure management facilities. Ruminant animals, and in particular cattle, are the principal source of methane emissions from enteric fermentation. Liquid manure management facilities, such as lagoons, pits, and storage tanks, are the principal source of methane emissions from livestock manure.
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| Livestock, Environment and Development (LEAD) Initiative |
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2. Impact Assessment: Methane Emissions
2.1 Cattle Characteristics
2.2 Feed Characteristics
2.3 Enteric Fermentation Emissions
2.4 Manure System Characteristics
2.5 Manure Facility Emissions
2.6 Total Methane Emissions from Livestock
3.1 Enteric Fermentation
3.2 Enteric Fermentation Case Study: Strategic Supplementation
3.3 Livestock Manure
3.4 Manure Facility Case Study: Covered Lagoon