Subscriber access provided by University of South Dakota
Environmental Measurements Methods
Mitigating greenhouse gas and ammonia emissions from beef cattle feedlot production - A system meta-analysis Yue Wang, Xinrong Li, Jinfeng Yang, Zhuang Tian, Qinping Sun, Wentao Xue, and Hongmin Dong Environ. Sci. Technol., Just Accepted Manuscript • DOI: 10.1021/acs.est.8b02475 • Publication Date (Web): 17 Aug 2018 Downloaded from http://pubs.acs.org on August 19, 2018
Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts.
is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Published by American Chemical Society. Copyright © American Chemical Society. However, no copyright claim is made to original U.S. Government works, or works produced by employees of any Commonwealth realm Crown government in the course of their duties.
Page 1 of 45
Environmental Science & Technology
1 2 3
Mitigating greenhouse gas and ammonia emissions from beef cattle feedlot production A system meta-analysis
4
5
Yue Wang∇, Xinrong Li∇, Jinfeng Yang∇, Zhuang Tian∇, Qinping Sun∇, Wentao Xue∇,
6
Hongmin Dong#∗
7
8 9
∇
#
Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
Institute of Environment and Sustainable Development in Agriculture, Chinese
Academy of Agricultural Sciences, Beijing 100081, China
10 11
KEYWORDS. beef cattle feedlot, enteric fermentation, manure management, GHG,
12
NH3, mitigation
13 14
ABSTRACT: Beef cattle production systems are the largest contributors of
15
greenhouse gas (GHG) and ammonia (NH3) emissions in the livestock industry. Here,
16
we present the first meta-analysis and integrated assessment of gaseous emissions and
17
mitigation potentials for a typical beef cattle feedlot system, including methane (CH4),
18
nitrous oxide (N2O), and NH3 losses from enteric fermentation and manure
19
management based on data from 104 studies. Fourteen integrated emission factors (EF)
20
and the mitigation efficiencies (ME) of 17 available options were provided. The
21
estimated GHG and NH3 emissions from the baseline feedlot system were 2786 ±108 1
ACS Paragon Plus Environment
Environmental Science & Technology
22
kg carbon dioxide equivalents (CO2-eq) per animal unit (AU) per year and 49.1 ±1.5 kg
23
NH3 AU-1 yr-1, respectively. Enteric CH4 fermentation and manure on the feedlot
24
contributed 67.5% and 80.8% of the total system GHG and NH3 emissions,
25
respectively. The highest ME values were found for lipid additives for enteric CH4
26
fermentation and urease inhibitor additives (UI) for NH3 emissions from manure on
27
the feedlot being -14.9% (p