COMMENT: Bovaer is added to cow feed to reduce methane emissions. Does it get into milk and meat? Is it harmful for humans?

COMMENT: Bovaer is added to cow feed to reduce methane emissions. Does it get into milk and meat? Is it harmful for humans?

Concern has been rising over the use of a feed supplement, Bovaer 10, to reduce methane production in cows. Bovaer 10 consists of silicon dioxide (basically sand), propylene glycol (a food stabilizer) and the active compound 3-nitrooxypropanol (3-NOP). Bovaer and 3-NOP were approved for use in Canada in early 2024. Canadian beef and dairy industry





“If you reduce methane emissions, there has to be another ‘sink’ that will wrap up that hydrogen. In the rumen there’s a number of different ways that hydrogen can go.” – Karen Beauchemin.

The science of burp-busting GHGs in cattle 

Bovaer is safe and effective but other GHG-limiting solutions should be appraised, says researcher

By now, many beef and dairy cattle producers have heard of Bovaer, the methane-reducing cattle supplement recently greenlit for use in Canada.  It’s being heralded as a tool to help those industries achieve their greenhouse gas reduction goals. But is Bovaer safe for animals and the humans that consume their products? A retired researcher gives


“In general, I think it’s a positive development.” – Tyler Fulton.

Beef and dairy groups give a thumbs-up to Bovaer

Methane-reducing tool will drive opportunities, say industry reps

Beef and dairy leaders are praising a new methane reduction tool recently approved for use in Canada. Bovaer is a powdered supplement that cattle feeders and dairy producers can mix with feed. The developers, Switzerland-based dsm-firmenich, claim it can reduce methane emissions in beef cattle by an average of 45 per cent, and by 30