Easy Fixes: Fish Oil Curtails Cow Farts

Julia Whitty

Facts matter: Sign up for the free Mother Jones Daily newsletter. Support our nonprofit reporting. Subscribe to our print magazine.


Adding 2-percent fish oil in the diet of cattle reduces the amount of methane emissions out their back ends. The benefits of omega-3 fatty acids are legendary and probably inflated but in this case the effect seems positively deflationary.

According to Lorraine Lillis, speaking at the Society for General Microbiology in the UK: “The fish oil affects the methane-producing bacteria in the rumen part of the cow’s gut, leading to reduced emissions. Understanding which microbial species are particularly influenced by changes in diet and relating them to methane production could bring about a more targeted approach to reducing methane emissions in animals.”

Target away, Doctor Lillis.

Cattle, sheep, and goats fart and burp about 900 billion tons of methane a year, more than a third of total global emissions. The problem comes from the methanogen bacteria inside the guts of ruminants. These helpful bacteria enable cows and the like to digest what is essentially indigestible (cellulose). But in the process they off-gas all that methane, which is 20 times more powerful by volume than carbon dioxide at trapping solar energy.

We could attempt to cap the number of flatulent ruminants in farm production as a means to cool global warming. This approach offers many fresh benefits—especially since meat and dairy are so insanely energy intensive, even without the farting. But if reduction never happens, we could still lower methane emissions via fish oil.

Or, better yet, flaxseed oil… can Doctor Lillis look into its omega-3 powers? If flaxseed works, then we don’t have to rape the seas to feed the cows who eat the grain grown with fossil-fuel technologies only to fart the methane just so we can eat the cows and fart the methane from our meat-clogged digestive tracts… then maybe  we’ll all live happily ever after.

(Burp.)

REAL QUICK, REAL URGENT

Minority rule, corruption, disinformation, attacks on those who dare tell the truth: There is a direct line from what's happening in Russia and Ukraine to what's happening here at home. And that's what MoJo's Monika Bauerlein writes about in "Their Fight Is Our Fight" to unpack the information war we find ourselves in and share a few examples to show why the power of independent, reader-supported journalism is such a threat to authoritarians.

Corrupt leaders the world over can (and will) try to shut down the truth, but when the truth has millions of people on its side, you can't keep it down for good. And there's no more powerful or urgent argument for your support of Mother Jones' journalism right now than that. We need to raise about $450,000 to hit our online fundraising budget in these next few months, so please read more from Monika and pitch in if you can.

payment methods

REAL QUICK, REAL URGENT

Minority rule, corruption, disinformation, attacks on those who dare tell the truth: There is a direct line from what's happening in Russia and Ukraine to what's happening here at home. And that's what MoJo's Monika Bauerlein writes about in "Their Fight Is Our Fight" to unpack the information war we find ourselves in and share a few examples to show why the power of independent, reader-supported journalism is such a threat to authoritarians.

Corrupt leaders the world over can (and will) try to shut down the truth, but when the truth has millions of people on its side, you can't keep it down for good. And there's no more powerful or urgent argument for your support of Mother Jones' journalism right now than that. We need to raise about $450,000 to hit our online fundraising budget in these next few months, so please read more from Monika and pitch in if you can.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate