Claudia Arndt, A.N. Hristov, William J. Price, Shelby C. McClelland, A.M. Pelaez, S.F. Cueva, J. Oh, A. Bannink, Ali Bayat, L.A. Crompton, J. Dijkstra, Maguy Eugène, E. Kebreab, M. Kreuzer, M. McGee, Christian Martin, C. J. Newbold, Christopher K. Reynolds, Angela Schwarm, Kevin J. Shingfield, Jolien B. Veneman, D. R. Yáñez-Ruíz, Zeren Y. Strategies to mitigate enteric methane emissions by ruminants - a way to approach the 2.0°C target.. 2021. agriXiv.2021.00040
Strategies to mitigate enteric methane emissions by ruminants - a way to approach the 2.0°C target.
DOI: 10.31220/agriRxiv.2021.00040
Statement: This article is a preprint and has not been peer-reviewed. It reports new research that has yet to be evaluated and so should not be used to guide clinical practice.
-
Abstract: Abstract Ruminant livestock enteric fermentation contributes approximately one-third of the global anthropogenic methane (CH 4 ) emissions and is projected to increase significantly to meet the increasing demand for animal-sourced protein. Methane, a short-lived greenhouse gas, needs to be reduced -24 to -47% by 2050 relative to 2010 to meet the 2.0°C target. This study describes the results of a comprehensive meta-analysis to determine effective mitigation strategies. The database included findings from 425 peer-reviewed studies (1963 to 2018). Mitigation strategies were classified into three main categories [animal and feed management, diet formulation, and rumen manipulation (additives and methods used to modify the rumen)] and up to five subcategories (98 total mitigation strategy combinations). A random-effects meta-analysis weighted by inverse variance was carried out (Comprehensive Meta-Analysis, V3.3.070). Five feeding strategies, namely CH 4 inhibitors, oils and fats, oilseeds, electron sinks, and tanniferous forages, decreased absolute CH 4 emissions by on average -21% (range -12 to -35%) and CH 4 emissions per unit of product (CH 4 I; meat or milk) by on average -17% (range -12 to -32%) without negatively affecting animal production (weight gain or milk yield). Furthermore, three strategies, namely decreasing dietary forage-to-concentrate ratio, increasing feeding level, and decreasing grass maturity, decreased CH 4 I by on average -12% (range -9 to -17%) and increased animal production by on average 45% (range 9 to 162%). The latter strategies are central to meeting the increasing demand for animal-sourced food. All strategies, but CH 4 inhibitors, can be implemented now and offer immediate approaches for combating global warming.
Key words: ch; average; range; strategies; 12; animaSubmit time: 1 January 2021
Copyright: The copyright holder for this preprint is the author/funder, who has granted agriXiv a license to display the preprint in perpetuity. -
图表
-
Kristal Jones, Andreea Nowak, Erika Berglund, Willow Grinnell, Emmanuel Temu, Birthe K. Paul, Leah L.R. Renwick, Peter Steward, Todd S. Rosenstock, Anthony A. Kimar. Integrating evidence of potential impacts of climate-smart agriculture in Tanzania.. 2021. doi: 10.31220/agriRxiv.2021.00103
Poorva Joshi, Neelesh Dahanukar, Shankar Bharade, Vijay Dethe, Smita Dethe, Neha Bhandare, Milind Watv. Where honesty and hard work is the only stable strategy: design, evolution and pilot implementation of a support cum reward game in developmental economics.. 2020. doi: 10.31220/agriRxiv.2020.00007
Frances Williams, Kate Constantine, A. A. Ali, Julien Godwin, Teresia Karanja, Staline Kibet, Eunice Lingeera, J. M. Mulila-Mitti, George M. Muthike, Ivan Rwomushana, Roger Da. An assessment of the capacity and responsiveness of a national system to address the threat of invasive species: a systems approach with examples from Kenya and Zambia.. 2021. doi: 10.31220/agriRxiv.2021.00049
K. V. Daniel, Mark A. Bradford, Emma Fuller, Emily E. Oldfield, Stephen A. Woo. Soil organic matter effects on US maize production and crop insurance payouts under drought.. 2020. doi: 10.31220/agriRxiv.2020.00018
Eric Bastos Görgens, Danielle Piuzana Mucida, Bruno Hericlles Lopes Silva, Huezer Viganô Sperandio, Maria Luiza de Azevedo, Ilziane Carmem Martins, Tamara Kelly Marques Rocha Nunes, Vinícius Orlandi Barbosa Lima, Israel Marinho Pereira, Marcelino Santos de Morai. Payment for environmental services as a strategy to influence land use change dynamics.. 2021. doi: 10.31220/agriRxiv.2021.00051
Ian Nicholas Best, Jhen Liu, Pei Jen L. Shaner, Chi‐Chien Kuo, Kurtis Jai‐Chyi Pe. Pest control practices of farmers in Taiwan and implications for non-target wildlife.. 2021. doi: 10.31220/agriRxiv.2021.00090
Todd S. Rosenstock, M. Mayzelle, Nictor Namoi, Peter Fantk. Climate impacts of natural farming: A cradle to gate comparison between conventional practice and Andhra Pradesh Community Natural Farming.. 2020. doi: 10.31220/agriRxiv.2020.00013
Adam Sparks, Emerson M. Del Ponte, Kaique S. Alves, Zachary Foster, Niklaus J. Grünwal. Openness and Computational Reproducibility in Plant Pathology: Where we Stand and a Way Forward. 2021. doi: 10.31220/agriRxiv.2021.00082
M. Abdullah Shaikh, Michalis Hadjikakou, Brett A. Brya. Patterns and trends in national-level consumption and production-based utilisation of the land-system change planetary boundary.. 2020. doi: 10.31220/agriRxiv.2020.00002
Antonia Patt, Lorenz Gygax, Edna Hillmann, Nina M. Kei. Signs of hunger in dairy calves indicate suboptimal periods in two weaning methods.. 2020. doi: 10.31220/agriRxiv.2020.00020
-
ID Submit time Number Download 1 2021-01-01 10.31220/agriRxiv.2021.00040V1
Download -
-
Public Anonymous To author only
Get Citation
Article Metrics
- Read: 49
- Download: 0
- Comment: 0
