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dc.contributor.authorLee MAen
dc.contributor.authorTodd Aen
dc.contributor.authorSutton MAen
dc.contributor.authorChagunda MGGen
dc.contributor.authorRoberts DJen
dc.contributor.authorRees RMen
dc.date.accessioned2017-10-11T10:07:54Z
dc.date.available2017-10-11T10:07:54Z
dc.date.issued2017
dc.identifier.citation3:1385693
dc.identifier.issn2331-1843
dc.identifier.urihttps://doi.org/10.1080/23311843.2017.1385693
dc.identifier.urihttp://hdl.handle.net/11262/11317
dc.description.abstractEmissions from dairy farms are contributing to the increased concentrations of greenhouse gases which are linked to recent climate change. Altering diets has been proposed as a greenhouse gas mitigation strategy in dairy systems. The magnitude of mitigation and the time taken for cows to adapt to new diets has not been comprehensively quantified. Methane (CH4) and carbon dioxide (CO2) produced by dairy cows was measured for six weeks using the sulphur hexafluoride tracer technique following a change in diet; from barley straw and protein supplements to grazed grass. CH4 and CO2 production increased linearly as the animals adapted to their new diets, however, production did not reach an asymptote six weeks into the grazing period. This suggested that metabolic activity and greenhouse gas emissions may not have been at their maximum. There was substantial variation between individuals with high emitting cows producing four times more CH4 than low producing cows. Cows which produced greater amounts of CH4 consistently also produced greater CO2. We demonstrate that feeding regime plays an important role in determining greenhouse gas emissions and we highlight that transition periods in greenhouse gas models and future experiments must be sufficiently large to allow for adaptation.en
dc.description.sponsorshipScottish Government RESAS Strategic Research Programme (RD2.3.6; SD4)en
dc.language.isoenen
dc.relation.isformatof14695en
dc.relation.ispartofCogent Environmental Scienceen
dc.rights© 2017 The Author(s). This open access article is distributed under a Creative Commons Attribution (CC-BY) 4.0 license.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectClimate changeen
dc.subjectDairyen
dc.subjectDry perioden
dc.subjectEnteric methaneen
dc.subjectGreenhouse gasesen
dc.subjectTransitionen
dc.titleA time-series of methane and carbon dioxide production from dairy cows during a period of dietary transitionen
dc.typeArticleen
dc.description.versionVersion of record
rioxxterms.publicationdate2017-09-30
rioxxterms.typeJournal Article/Reviewen
dcterms.dateAccepted2017-09-30
refterms.accessExceptionNAen
refterms.dateDeposit2017-10-11
refterms.depositExceptionNAen
refterms.panelUnspecifieden
refterms.technicalExceptionNAen
refterms.versionAMen


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© 2017 The Author(s). 

This open access article is distributed under a Creative Commons Attribution (CC-BY) 4.0 license.
Except where otherwise noted, this item's license is described as © 2017 The Author(s). This open access article is distributed under a Creative Commons Attribution (CC-BY) 4.0 license.