首页|Invited review: Current enteric methane mitigation options

Invited review: Current enteric methane mitigation options

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  • NETL
  • NSTL
  • Elsevier
Ruminant livestock are an important source of anthropogenicmethane (CH_4). Decreasing the emissionsof enteric CH_4 from ruminant production is strategicto limit the global temperature increase to 1.5℃ by2050. Research in the area of enteric CH_4 mitigationhas grown exponentially in the last 2 decades, withvarious strategies for enteric CH_4 abatement beinginvestigated: production intensification, dietary manipulation(including supplementation and processingof concentrates and lipids, and management of forageand pastures), rumen manipulation (supplementationof ionophores, 3-nitrooxypropanol, macroalgae, alternativeelectron acceptors, and phytochemicals), and selectionof low-CH_4-producing animals. Other enteric CH_4mitigation strategies are at earlier stages of research butrapidly developing. Herein, we discuss and analyze thecurrent status of available enteric CH_4 mitigation strategieswith an emphasis on opportunities and barriersto their implementation in confined and partial grazingproduction systems, and in extensive and fully grazingproduction systems. For each enteric CH_4 mitigationstrategy, we discuss its effectiveness to decrease totalCH_4 emissions and emissions on a per animal productbasis, safety issues, impacts on the emissions of othergreenhouse gases, as well as other economic, regulatory,and societal aspects that are key to implementation.Most research has been conducted with confinedanimals, and considerably more research is needed todevelop, adapt, and evaluate antimethanogenic strategiesfor grazing systems. In general, few options arecurrently available for extensive production systemswithout feed supplementation. Continuous research anddevelopment are needed to develop enteric CH_4 mitigationstrategies that are locally applicable. Informationis needed to calculate carbon footprints of interventionson a regional basis to evaluate the impact of mitigationstrategies on net greenhouse gas emissions. Economicallyaffordable enteric CH_4 mitigation solutions areurgently needed. Successful implementation of safe andeffective antimethanogenic strategies will also requiredelivery mechanisms and adequate technical supportfor producers, as well as consumer involvement and acceptance.The most appropriate metrics should be usedin quantifying the overall climate outcomes associatedwith mitigation of enteric CH_4 emissions. A holistic approach is required, and buy-in is needed at all levels ofthe supply chain.

antimethanogenic strategiesclimate changemethanemitigationruminants

Karen A. Beauchemin、Emilio M. Ungerfeld、Adibe L. Abdalla、Clementina Alvarez、Claudia Arndt、Philippe Becquet、Chaouki Benchaar、Alexandre Berndt、Rogerio M. Mauricio、Tim A. McAllister、Walter Oyhantçabal、Saheed A. Salami、Laurence Shalloo、Yan Sun、Juan Tricarico、Aimable Uwizeye、Camillo De Camillis、Martial Bernoux、Timothy Robinson、Ermias Kebreab

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Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, Alberta T1J 4B1, Canada

Centro Regional de Investigacion Carillanca, Instituto de Investigaciones Agropecuarias INIA, Vilcun, La Araucania 4880000, Chile

Center for Nuclear Energy in Agriculture, University of Sao Paulo, Piracicaba, Sao Paulo CEP 13416.000, Brazil

Research Department, TINE SA, As, 1430, Norway

International Livestock Research Institute, Nairobi 00100, Kenya

International Feed Industry Federation, Wiehl 51657, Germany

Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec J1M 0C8, Canada

Embrapa Southeast Livestock, Rod. Washington Luiz, km 234, CP 339. Sao Carlos, Sao Paulo CEP 13.560-970, Brazil

Department of Biosystems Engineering, Federal University of Sao Joao Del Rey, Sao Joao, Minas Gerais 36325.000, Brazil

Facultad de Agronomia, Universidad de la República, Montevideo, 12900, Uruguay

Solutions Deployment Team, Alltech (UK) Ltd., Ryhall Road, Stamford, PE9 1TZ, United Kingdom

Animal and Grassland Research and Innovation Department, Teagasc, Moorepark, Fermoy, Co Cork P61 C996, Ireland

Cargill Inc., Minneapolis, MN 55440

Innovation Center for U.S. Dairy, Rosemont, IL 60018

Food and Agriculture Organization of the United Nations, Animal Production and Health Division, Rome, 00153, Italy

Food and Agriculture Organization of the United Nations, Office of Climate Change, Biodiversity and Environment, Rome, 00153, Italy

Department of Animal Science, University of California–Davis, Davis 95616

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2022

10.3168/jds.2022-22091

Journal of dairy science

Journal of dairy science

ISSN：0022-0302
年,卷(期)：2022.105(12)
  • 22
  • 204