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This cow feed supplement reduces methane gas cows emit by 30%

With more than 1.4 billion cows in the world, cattle farming accounts for nearly 10% of all greenhouse gases generated by human activity.

A big chunk comes from the methane cows emit, but a new feed supplement could reduce those emissions by an average of 30%, according to its makers. If all the world’s cows ate the supplement, the reduction in emissions could be equivalent to taking more than 300 million cars off Europe’s roads.

Developed by Swiss-British startup Mootral, the supplement, based on garlic and citrus extracts, is mixed with regular cattle feed, reducing methane emissions by the equivalent of around one ton of carbon dioxide per cow per year.




The company is now converting these savings into carbon credits that are sold to businesses that want to offset their emissions.

Proceeds from the sale of the carbon credits go back to the farmers, subsidizing the initial cost of the feed and encouraging them to buy more.

“Carbon credits are an important stimulus tool to drive the adoption of climate-friendly technologies,” Mootral CEO Thomas Hafner told CNN.



Brades Farm in Lancashire, northwest England, is the first commercial farm to take advantage of Mootral’s carbon credit program. Its herd of 440 dairy cows are fed the supplement twice a day.

The feed additives help to inhibit the microbes in a cow’s stomach from making methane, which is usually produced as a byproduct of digesting fibrous plant material like grass.

Mootral’s so-called “CowCredits” don’t come cheap. They entered the market in April costing around $80 each, with one credit offsetting one ton of CO2.

Forestry offset schemes, by comparison, cost an average of $4 per ton of CO2, according to research firm Ecosystem Marketplace.

With businesses under increasing pressure to reduce their climate impact, the demand for offsets is growing. Ecosystem Marketplace estimates that the global voluntary offset market was worth $320 million in 2019, more than double its value two years before. The Taskforce on Scaling Voluntary Carbon Markets estimates it could grow to more than $50 billion by 2030.

So far Mootral has generated more than 300 CowCredits. It wants to create 10,000 in the next year, and is looking to raise $2.5 million from investors to scale up the rollout.