Enteric Methane Technical Working Group
The report, Enteric Methane and Climate Outcomes: Literature Review and Technical Guidance, provides science-based assessments of three feed additives for methane reduction: 3-Nitrooxypropanol (Bovaer®), lipids, and tannins. These assessments are based on three analyses conducted through the TWG: A meta-analysis of effects of seaweed and other bromoform-containing feed ingredients on methane production, yield, and intensity in cattle (published), A second-order meta-analysis on the effect of dietary lipids on enteric methane emissions (in review), and Impact of tannin-based additives on animal performance and enteric methane emissions in dairy and beef cattle: a meta-analysis (in review). In addition, two interventions with highest potential in the near future are also included in the synthesis: bromoform-containing feed additives and methane-reducing vaccines. The working group completed a meta-analysis for bromoform-containing feed additives, A meta-analysis of effects of seaweed and other bromoform containing feed ingredients on methane production, yield, and intensity in cattle, as well as a literature review for methane reducing vaccines. The report includes data on how each of these interventions impacts methane yield, production, and intensity.
SUMMARY
TWG MEMBERS
Ermias Kebreab (chair), Associate Dean for Global Engagement in the College of Agricultural and Environmental Sciences, Director of the World Food Center at UC Davis
Peri Rosenstein, Senior Scientist, Environmental Defense Fund
Sara Place, Associate Professor, Colorado State University
Fernanda Ferreira, Director for Agricultural Methane, Clean Air Task Force
Kleves Almeida, Research Scientist, University of New Hampshire
Research Assistants:
Vinícius Carneiro de Souza, Postdoctoral Scholar, UC Davis
Fredy Ramírez-Agudelo, Postdoctoral Scholar, UC Davis
Irene Reis, Research Scholar, Colorado State University