Moving toward net zero methane emissions in livestock

Livestock methane emissions a global issue

Methane emissions from livestock are one of the most significant contributors to agricultural greenhouse gases – and a growing concern for markets, investors, and consumers globally. But in South Australia, this challenge is being met with a science-led solution, driven by the South Australian Research and Development Institute (SARDI) and supported through strategic co-investment from the South Australian Government, and industry partners, including Australian Wool Innovation and Meat & Livestock Australia.

South Australia leading national research

SARDI is leading nationally recognised research in this space and is a key partner in the National Sheep Methane Program. Through collaborative, multidisciplinary science, we’re tackling the challenge from multiple angles – bringing together livestock nutrition, pasture science, and delivery system engineering.

At the heart of the work is a suite of anti-methanogenic additives and methane-suppressing forages. Our researchers are identifying optimal formulations, dosages, and delivery systems – tailored to different production systems, climates, and commercial operations across South Australia and beyond.

Leading anti-methanic trails

In recent trials, Agolin Ruminant, a plant-based additive, and water-stabilised soluble bromoform (WSSB), derived from red seaweed, delivered methane reductions of 40% and 20% respectively, without impacting animal health or water intake. These outcomes were measured using in-paddock GreenFeed units, ensuring real-world applicability.

We’ve now launched long-term trials to assess how these additives affect ewe reproduction, wool growth, meat quality, and progeny development. This is practical science, answering the questions producers need to know.

We're also trialling 3-NOP (Bovaer), a synthetic feed additive that has shown promise in reducing methane when delivered through pelleted feed. And we're exploring stacked approaches – combining multiple compounds for enhanced impact across different systems.

Importantly, SARDI is also developing anti-methanogenic pasture species—leveraging our national leadership in pasture science and the Australian Pasture Genebank. Our mixed-farming researchers are identifying forages rich in natural bioactives that reduce methane by modifying rumen fermentation – while maintaining or even boosting animal productivity.

Local research providing national leadership

This research unlocks new value across livestock industries. It offers pathways to carbon-neutral red meat and wool, reduced input costs, and verified sustainability claims that resonate with high-value markets and supply chain partners.

South Australia is now recognised as a national leader in emissions reduction science. Our research is already shaping industry practice – and with the right investment, it can drive further innovation, jobs, and competitive advantage for regional communities.

This is science that supports climate targets, strengthens supply chains, and keeps South Australia at the forefront of sustainable agriculture.