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Ruminants accounts for up to one-third of the emitted methane worldwide. Over the decade, various methods have been developed with the purpose of measuring and estimating methane emissions from ruminants. These methods have advantages and disadvantages- none of them is perfect: Some are expensive, some cheaper; some suitable for grazing animals, some for housed ruminants; some can handle many animals, some only few. This all will ultimately affect our results and their interpretation. It is therefore, important to know the potential and limitations of each method. In this review, commonly used methods for measuring methane emission have been discussed along with their pros and cons. In addition, this review compares different estimation approaches that are commonly used. | Methane emission by ruminants and its measurement - A review
