New research in Brazil confirms that methane-inhibiting feed additives can make a significant contribution to making livestock farming more sustainable. In a study by Minerva Foods and Rumin8, conducted with the University of São Paulo, a methane reduction of over 50 percent was measured in Nelore cattle.
The trial, which lasted 120 days, investigated the effect of a bromoform-based additive under conditions comparable to commercial feedlots. Cattle administered the supplement via a mixed ration showed not only a sharp decrease in methane emissions but also a statistically significant improvement of approximately 5 percent in feed conversion. In addition, methane intensity per kilogram of weight gain was halved.
Promising strategies
A total of 280 animals participated in the study, divided into groups for precise individual measurements and larger-scale field simulations. The total emission reduction during the trial is estimated at nearly 30 tonnes of CO₂ equivalent. The results are currently being independently verified by specialized certification bodies. According to the researchers, the tested additive is among the most promising strategies to limit methane emissions in cattle farming without compromising productivity.
Research in the wool sector
In parallel, additional field research in the wool sector shows that similar principles are applicable to sheep. In a pilot project by Sea Forest, among others, a methane reduction of approximately 43 percent was achieved in Merino sheep fed with additives. The project, with partners such as Theory and Congi Farm, underscores the importance of further research into feed strategies as an instrument for emission reduction.
