DOI: 10.1007/s10584-016-1686-1
Scopus记录号: 2-s2.0-84978870898
论文题名: Mitigation of enteric methane emissions from global livestock systems through nutrition strategies
作者: Caro D. ; Kebreab E. ; Mitloehner F.M.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2016
卷: 137, 期: 2018-03-04 起始页码: 467
结束页码: 480
语种: 英语
Scopus关键词: Agriculture
; Dairies
; Fertilizers
; Manures
; Methane
; Nitrogen oxides
; Nutrition
; Enteric methane emissions
; Gastrointestinal tract
; Greenhouse gas (GHG)
; Indirect effects
; Livestock systems
; Manure management
; Methane emissions
; Potential reduction
; Greenhouse gases
; cattle
; concentration (composition)
; diet
; emission control
; environmental management
; greenhouse gas
; lipid
; methane
; mitigation
; nitrous oxide
; numerical model
; pollutant source
; protein
; waste management
; Africa
; Asia
; South America
; Animalia
; Bos
英文摘要: Enteric methane (CH4) generated in the gastrointestinal tract of ruminant represents the source of the greatest direct greenhouse gas (GHG) released from the livestock sector. We evaluated the global potential reduction of enteric CH4 emissions released from dairy cattle through amendment of their traditional diets in 183 countries aggregated to 11 regions. Amending dairy cattle diets involves increasing the concentration of lipid (up to 6 %) and decreasing the concentration of fiber, without affecting the total gross energy intake (GEI). Enteric CH4 emissions were calculated by using a mathematical model developed to include dietary intervention. In 2012, we found a global potential reduction of 15.7 % of enteric CH4 emissions from dairy cattle. The highest potential reduction per unit of milk produced occurs in Africa followed by South America and Asia (55, 46 and 34 %, respectively). The amended diets proposed here, mostly affect the regions in which demand for animal source protein will be greatest in the future. Because lipid supplementation may result in an indirect effect on CH4 and nitrous oxide (N2O) emissions from manure management, they were also estimated. Methane emissions from manure management would decrease by 13 %, while N2O emissions would increase by 21 % due to diet amendment. On balance, the total potential reduction of GHG emissions through diet amendment was 104 MtCO2eq annually. Moreover, amending diets would increase global milk production by 13 %. This study evaluated a global potential reduction of GHG emissions directly released from dairy cattle, however, future advancements dealing with the analysis of the upstream emissions associated to these diet changes are needed. © 2016, Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84259
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Roskilde, Denmark; Department of Animal Science, University of California, Davis, CA, United States
Recommended Citation:
Caro D.,Kebreab E.,Mitloehner F.M.. Mitigation of enteric methane emissions from global livestock systems through nutrition strategies[J]. Climatic Change,2016-01-01,137(2018-03-04)