articleProceedings of the National Academy of SciencesMay 10, 2022GREEN OA

Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050

CAClaudia ArndtAHA.N. HristovWJWilliam J. PriceSCShelby C. McClellandAMAmalia Mejia Pelaez

International Water Management Institute · International Livestock Research Institute · +18 more institutions

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Abstract

To meet the 1.5 °C target, methane (CH4) from ruminants must be reduced by 11 to 30% by 2030 and 24 to 47% by 2050 compared to 2010 levels. A meta-analysis identified strategies to decrease product-based (PB; CH4 per unit meat or milk) and absolute (ABS) enteric CH4 emissions while maintaining or increasing animal productivity (AP; weight gain or milk yield). Next, the potential of different adoption rates of one PB or one ABS strategy to contribute to the 1.5 °C target was estimated. The database included findings from 430 peer-reviewed studies, which reported 98 mitigation strategies that can be classified into three categories: animal and feed management, diet formulation, and rumen manipulation. A…

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Topics & keywords

Topics
Keywords
  • Methane
  • Methane emissions
  • Agriculture
  • Productivity
  • Environmental science
  • Natural resource economics
  • Greenhouse gas
  • Offset (computer science)
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