Neck tube experiment measures gas emitted by farm animalspublished at 09:44 British Summer Time 19 August 2019
Adrian Campbell
BBC South West environment correspondent
A scientific trial is under way on a farm in Devon to measure how much methane is produced by cattle and sheep.
Farming and climate change expert Professor Tom Misselbrook said it was estimated grazing animals produce just 5% of the UK's total greenhouse gases.
It is hoped plastic tubes placed around cows' necks on the farm near Okehampton will help give an accurate measurement of how much methane they are emitting from their mouths.
Methane gas is 25 times more potent than carbon dioxide when it comes to heating up the atmosphere, and researchers have been looking for ways to reduce gas emissions from the animals.
Quote MessageWhen the animal burps or breathes, and we're getting some methane coming out, we're sampling that ... and capturing that.
Quote MessageWe're also very interested in measuring the methane emissions from our cattle and sheep here, potentially methane from the soil ... and nitrous oxide emissions, so nitrous oxide is another greenhouse gas, which can arise from manures, fertilisers and from dung and urine from the grazing animal."
Professor Tom Misselbrook, Farming and climate change expert