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https://hdl.handle.net/1959.11/29253
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Parker, David B | en |
dc.contributor.author | Meyer, Beverly | en |
dc.contributor.author | Jennings, Tracy | en |
dc.contributor.author | Jennings, Jenny | en |
dc.contributor.author | Dougherty, Holland | en |
dc.contributor.author | Cole, N Andy | en |
dc.contributor.author | PAS | en |
dc.contributor.author | Casey, Ken | en |
dc.date.accessioned | 2020-08-19T03:13:24Z | - |
dc.date.available | 2020-08-19T03:13:24Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | The Professional Animal Scientist, 34(6), p. 594-607 | en |
dc.identifier.issn | 1080-7446 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/29253 | - |
dc.description.abstract | Nitrous oxide (N<sub>2</sub>O) is a greenhouse gas with a higher global warming potential than carbon dioxide (CO<sub>2</sub>) or methane (CH<sub>4</sub>). The objectives of this research were to quantify enteric N<sub>2</sub>O emissions from beef cattle and determine effects of dietary nitrate (NO<sub>3</sub>) concentrations. Experiments consisted of one in vitro incubation trial and 2 live animal (LA) trials. During the in vitro trial, gas was collected from 4 forage-based and 5 corn-based diets. During the LA trials, emissions were monitored from steers in respiration chambers. In LA trial 1, 5 measurements of 256 to 720 min were conducted on a single steer within a 48-h period. In LA trial 2, measurements were conducted on 4 steers in the absence of manure. Highest in vitro N<sub>2</sub>O production was from diets containing added NO<sub>3</sub> or alfalfa. In vitro N<sub>2</sub>O increased with dietary NO<sub>3</sub> concentrations (r<sup>2</sup> = 0.99), with little correlation to dietary CP (r<sup>2</sup> = 0.17). Added NO<sub>3</sub> decreased CH<sub>4</sub> emissions. Mean N<sub>2</sub>O emission rates (±SD) from the LA trials were 6.93 ± 2.99 mg of N2O∙kg−1 of DMI in trial 1 and 2.20 ± 0.10 mg of N2O∙kg−1 of DMI in trial 2. Mean enteric N<sub>2</sub>O emissions accounted for 0.35% (LA trial 1) and 0.12% (LA trial 2) of CO<sub>2</sub> equivalents. Enteric N<sub>2</sub>O emission rates were 6 to 40 times lower than values cited in earlier publications. Enteric N<sub>2</sub>O emission rates were also 58 to 108 times lower than manure emissions. Therefore, efforts to reduce greenhouse gas emissions from beef cattle should focus on enteric CH<sub>4</sub> and manure N<sub>2</sub>O as opposed to enteric N<sub>2</sub>O. | en |
dc.language | en | en |
dc.publisher | Elsevier Inc | en |
dc.relation.ispartof | The Professional Animal Scientist | en |
dc.title | Enteric nitrous oxide emissions from beef cattle | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.15232/pas.2018-01769 | en |
local.contributor.firstname | David B | en |
local.contributor.firstname | Beverly | en |
local.contributor.firstname | Tracy | en |
local.contributor.firstname | Jenny | en |
local.contributor.firstname | Holland | en |
local.contributor.firstname | N Andy | en |
local.contributor.firstname | Ken | en |
local.subject.for2008 | 050204 Environmental Impact Assessment | en |
local.subject.for2008 | 070203 Animal Management | en |
local.subject.seo2008 | 830301 Beef Cattle | en |
local.subject.seo2008 | 839802 Management of Greenhouse Gas Emissions from Animal Production | en |
local.profile.school | Environmental and Rural Science | en |
local.profile.email | david.parker@ars.usda.gov | en |
local.profile.email | hdoughe2@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.publisher.place | United States of America | en |
local.format.startpage | 594 | en |
local.format.endpage | 607 | en |
local.identifier.scopusid | 85057127553 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 34 | en |
local.identifier.issue | 6 | en |
local.contributor.lastname | Parker | en |
local.contributor.lastname | Meyer | en |
local.contributor.lastname | Jennings | en |
local.contributor.lastname | Jennings | en |
local.contributor.lastname | Dougherty | en |
local.contributor.lastname | Cole | en |
local.contributor.lastname | Casey | en |
dc.identifier.staff | une-id:hdoughe2 | en |
local.profile.orcid | 0000-0001-9918-4986 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:1959.11/29253 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Enteric nitrous oxide emissions from beef cattle | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Parker, David B | en |
local.search.author | Meyer, Beverly | en |
local.search.author | Jennings, Tracy | en |
local.search.author | Jennings, Jenny | en |
local.search.author | Dougherty, Holland | en |
local.search.author | Cole, N Andy | en |
local.search.author | PAS | en |
local.search.author | Casey, Ken | en |
local.uneassociation | No | en |
local.atsiresearch | No | en |
local.sensitive.cultural | No | en |
local.year.published | 2018 | en |
local.fileurl.closedpublished | https://rune.une.edu.au/web/retrieve/09114fa6-2815-498a-8e1d-9497fbeb0aa0 | en |
local.subject.for2020 | 410402 Environmental assessment and monitoring | en |
local.subject.for2020 | 300302 Animal management | en |
local.subject.seo2020 | 100401 Beef cattle | en |
local.subject.seo2020 | 190302 Management of greenhouse gas emissions from animal production | en |
Appears in Collections: | Journal Article School of Environmental and Rural Science |
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