Comparing methods to measure methane emissions from sheep

Ruminant livestock produce enteric methane in their multi-chambered stomachs when they digest plant matter.

Most methane is released through belching—contrary to a common misconception, only about 5% of livestock methane is produced through flatulence.

Methane is a potent greenhouse gas (GHG) which significantly contributes to climate change.

However, a recent survey in Ethiopia conducted by the International Livestock Research Institute (ILRI) Mazingira Centre has highlighted a significant problem—different GHG measurement models are producing different values, leaving researchers uncertain as to which model is most accurate.

Researchers must understand the discrepancies between the models to make recommendations to policymakers for more accurate national GHG inventory accounting, a key factor in formulating effective mitigation strategies.

Photo: A farmer leads his sheep and goats to market in Menz, Ethiopia (ILRI/Zerihun Sewunet)