Rumin8 secures US$3M backing to advance methane-reducing feed additives

NEW ZEALAND – Public-private partnership AgriZeroNZ has committed US$3 million to Australian biotech company Rumin8 to accelerate the development and commercialisation of methane-reducing feed additives for cattle, as the industry seeks scalable solutions to cut livestock emissions without compromising productivity.

The investment adds to Rumin8’s growing list of commercial partners, including Breakthrough Energy Ventures, Aware Super and Just Climate. 

It supports the company’s expansion into New Zealand, where it plans to begin pivotal trials ahead of commercial launch in 2027.

Rumin8’s technology replicates a naturally occurring compound found in red seaweed (Asparagopsis) through a scalable manufacturing process that delivers consistent performance at lower cost. 

According to the company, trials in beef cattle have shown an average methane reduction of 82% and productivity gains of up to 5%.

Chief executive and co-founder David Messina said aligning with AgriZeroNZ supports the company’s strategy to partner in key agricultural markets. 

“We are both acutely aware that if methane-reducing products are to be widely adopted, they must be commercially viable. Productivity gains and a strong safety profile are critical to that,” he said.

Rumin8 received provisional registration from New Zealand’s Agricultural Compounds and Veterinary Medicines (ACVM) regulator in 2024, allowing it to conduct efficacy and safety trials in commercial animals. 

The upcoming trials will define dosage, application methods and product labelling, key steps toward full regulatory approval.

AgriZeroNZ chief executive Wayne McNee said the investment is part of a broader strategy to equip farmers with practical tools for emissions reduction while maintaining market competitiveness. 

“Most of our major export customers have set emissions targets across their value chains, including livestock production. Demonstrating credible progress is essential to maintaining market access,” he said.

Methane reduction without compromising animal or consumer safety

Feed additives designed to reduce methane emissions are gaining traction globally, but adoption depends heavily on proven safety for both animals and consumers. 

Compounds derived from red seaweed, including those replicated by Rumin8, have been widely studied for their ability to reduce methane production in cattle by 80%–90%, largely due to bromoform, which inhibits rumen enzymes responsible for methane production.

Industry trials across multiple geographies, including Australia, Brazil and the United States, indicate that such additives can significantly reduce enteric methane emissions without negative impacts on animal health when administered at controlled dosages. 

Rumin8 reports no adverse health effects in its trials and no detectable residues in meat, addressing key regulatory and consumer concerns.

From a production standpoint, maintaining or improving feed efficiency is critical. 

Early data suggests that methane reduction can coincide with improved energy utilisation in the animal, potentially translating into productivity gains such as better weight gain or feed conversion ratios.

For consumers, regulatory frameworks in markets such as New Zealand, the European Union and the United States require rigorous safety validation before approval. 

This includes residue testing, toxicology assessments and long-term animal health monitoring. 

As a result, commercially approved methane-reducing feed additives are expected to meet the same food safety standards as conventional feed inputs.

The push for methane mitigation technologies reflects increasing pressure across the livestock value chain to reduce emissions while sustaining output. 

As solutions like Rumin8’s move closer to commercialisation, their ability to balance environmental impact, animal performance, and food safety will determine the pace of global adoption.

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