How do livestock farms contribute to methane and nitrous oxide emissions?

Livestock farming contributes to methane and nitrous oxide emissions primarily through animal digestion and waste management processes.1

Methane Emissions

• Enteric Fermentation: Cattle are ruminants that produce methane during digestion. This gas is released into the atmosphere primarily through belching as the animals process grasses and hays that humans cannot digest.2
• Manure Management: When livestock manure is stored in traditional open lagoons, it creates a low-oxygen environment where methane-producing microbes thrive, leading to significant methane emissions.23

Nitrous Oxide Emissions

• Waste Decomposition: Intensive animal farms, particularly those focused on beef and dairy cattle, generate millions of tons of nitrous oxide annually. These emissions are largely associated with the management and decomposition of the vast quantities of manure produced by large numbers of confined animals.13

Because these gases are potent greenhouse gases, intensive livestock operations are considered major contributors to the climate crisis. Addressing these emissions is an urgent ethical responsibility to mitigate the environmental impact of global food production.12