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Joaquín Ventura García & Fernando Diaz

Although farming really produces less than 10% of greenhouse gas emissions, several recently published news point at animal production as one of main polluting sectors. Several attempts have been made to reduce dairy cow methane emissions such as adding plant oils containing high levels of polyunsaturated fatty acids or seaweed to the diets. These methods based on the addition of dietary supplements have an immediate effect but only work while the supplement is fed. In comparison to feeding strategies, breeding schemes based in methane emissions level need more time to have an impact, but they are cumulative and permanent.

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