A trial showed that high-sugar grasses could reduce an animal's methane emissions by 20 per cent for every kg of weight gain and naked oats could reduce methane emissions from sheep by 33 percent.Farm animals have been roaming the earth for hundreds of years and have also been emitting methane for hundreds of years. Forcing farmers to feed their animals special food will only be expensive and a burden to both consumers and the agriculture business.
"In the longer term the benefits gained by changing animals' diets will need to be considered against other environmental impacts as well as how practical or costly they are for the farming industry to implement," Defra said in a statement.
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