New Zealand targets cow burps to help reduce global warming

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How do you stop a cow from burping? It might sound like the start of a humorous riddle, but it's the subject of a huge scientific inquiry in New Zealand.

Much of the research is taking place at a Palmerston North campus, which some have jokingly taken to calling Gumboot Valley, in a nod to Silicon Valley.

He's been working on developing a vaccine for the past 15 years and has focused intensively on it for the past five years. He said it has the potential to reduce the amount of methane belched by cows by 30% or more.A vaccine would stimulate an animal's immune system to produce antibodies, which would then dampen the output of the methane-producing microbes.

Scientists have for years been testing sheep in chambers to chart differences in how much methane they belch. The low-emitters have been bred and produced low-emitting offspring. Scientists have also been tracking genetic characteristics common to low-emitting animals that make them readily identifiable.

At one greenhouse on the campus, scientists are developing genetically modified clover. Visitors must wear booties and medical scrubs and avoid putting down objects to prevent any cross-contamination. With the clover, scientists have found a way to increase tannins, which helps block methane production.

But like the inhibitors and vaccine, the feed program is still some years away from being farm ready. Scientists have completed controlled tests in the U.S. and are planning a bigger field trial in Australia.

 

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