Carbon

New Methodology for the Reduction of Enteric Methane Emissions

Ruminants like cattle, sheep, and goats release methane as a result of their digestion process where bacteria, protozoa, and fungi contained in the fore-stomach of the animal (rumen), ferment and break down the plant biomass eaten by the animal. This process, called enteric fermentation, is the largest source of global emissions from ruminant supply chains, contributing about 58% percent of the whole sector 1.

To meet the increasing demand for cattle products, mitigation strategies aimed at reducing the emission intensity of this sector are needed. Further developments in understanding the biochemical processes of both the rumen and the methanogens (the microorganisms within the rumen that produce the methane) have led manufacturers to produce natural feed supplements to inhibit methanogenic activity and thus reduce methane emissions. Such supplements are safe for the animal and aim to significantly reduce methane emissions. Reducing enteric fermentation improves the environmental profile of meat and dairy products and provides consumers and livestock producers with sustainable climate-friendly products and a quantified carbon footprint reduction.

Mootral and VERRA are pleased to announce the development of an innovative methodology to quantify enteric emission reductions from ruminants, allowing the livestock industry to contribute to SDG 13: Climate Action, SDG 12: Responsible consumption and production and SDG 17: Partnerships for the goals.

This methodology provides the equations and parameters for calculating the emission reductions produced through the use of methanogen inhibiting feed supplements. For ease of use, it uses emission reduction factors, eliminating the need for direct measurement for monitoring. In addition, it is globally applicable and utilizes an activity method for the demonstration of additionality.

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