New data cuts feedlot methane estimates
12/06/2025
The Australian Government’s latest National Greenhouse Gas Inventory Report incorporates a new, locally developed equation for calculating enteric methane emissions from grainfed cattle. The update follows research by the University of New England (UNE), funded by Meat & Livestock Australia (MLA) on behalf of the Australian Lot Feeders’ Association (ALFA).
The revised calculation shows that methane emissions from Australian feedlot cattle are, on average, 56% lower over the past five years, and 57% lower in 2021–22, than earlier estimates suggested. Previous figures were based on a US-derived equation from 1979, designed for dairy cattle in different production systems and diets, making them unsuitable for modern Australian feedlots.
MLA managing director, Michael Crowley, said the development of an Australian-specific method provides the industry with a more accurate understanding of its emissions profile and a clearer pathway for further reductions. ALFA president, Grant Garey, said the improved data will help feedlot operators meet growing demands for climate-related evidence and reporting.
UNE’s research included analysis of historical methane studies and new measurements from cattle fed tempered barley-based diets, typical of Australian feedlots. Results confirmed that emissions from these animals are lower than those predicted by the outdated model.
The update offers the industry greater confidence in reporting and managing its greenhouse gas emissions, as it continues efforts to reduce its environmental footprint.
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