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Manners aside, getting cows to burp less can help reduce global warming.
Using modern plant-breeding methods to find new diets for cows that make them belch less is a way to reduce greenhouse gas emissions, scientists said on Monday.
The key is developing new varieties of food that are easier for cattle to digest and also provide a proper balance of fiber, protein and sugar, said Michael Abberton, a scientist at the UK-based Institute of Grassland and Environmental Research.