Researchers Identified Low-Methane Napier Grass Varieties
New study findings show elite forage accessions may support lower-emission livestock production.
Updated on Sept. 23, 2026 in Organic Food
Live Poll
Should agricultural research prioritize reducing methane emissions over maintaining traditional forage digestibility and energy levels?
Researchers identified specific Napier grass varieties capable of significantly reducing methane emissions compared to poor-performing accessions. These findings offer a new path for developing sustainable, climate-smart forage systems for livestock.
Why it matters
Identifying forage that lowers methane production without sacrificing essential nutrition is critical for making global livestock systems more sustainable. This multi-trait selection approach helps bridge the gap between environmental goals and the nutritional needs of cattle.
In a study evaluating 750 samples from 84 Napier grass accessions, researchers used high-throughput in-vitro fermentation and rumen inoculum from three donor cows to identify 10 elite, low-methane varieties. These elite accessions demonstrated methane yields as low as 0.019 mL/g DM.
The details
The researchers employed a weighted selection index that balanced methane reduction, assigned 60% of the weight, against digestibility, assigned 40%. While the low-methane accessions tended to have lower crude protein and metabolizable energy, the elite group maintained digestibility levels between 55.2% and 69.0%. By screening samples grown under varying water-stress levels, the team ensured the selected grasses could maintain these emission-reducing traits in different environmental conditions.
Timeline
September 23, 2026: Study findings were published.
Health Landscape
This development marks a shift in climate-smart livestock production, moving toward genetic selection of plants rather than relying solely on additives. It highlights an evolution in agricultural science to optimize the nutritional efficiency and environmental footprint of essential forage grasses.
While this research focuses on animal agriculture, it reflects the growing scientific focus on the environmental footprint of the food supply chain. Consumers interested in the sustainability of their food choices can look for labels indicating carbon-neutral or climate-smart agricultural practices.
The takeaway
Selecting specific forage varieties can meaningfully reduce methane emissions in livestock production without compromising digestive energy. Tracking the adoption of climate-smart agricultural research can help you better understand the environmental standards behind your food sources.
Further reading
For more on the environmental impact of food production, see our Organic Food section.
Live Poll
Should agricultural research prioritize reducing methane emissions over maintaining traditional forage digestibility and energy levels?
