Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/13730
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dc.contributor.authorCottle, Daviden
dc.contributor.authorConington, Joanneen
dc.date.accessioned2013-11-22T17:08:00Z-
dc.date.issued2013-
dc.identifier.citationThe Journal of Agricultural Science, 151(6), p. 872-888en
dc.identifier.issn1469-5146en
dc.identifier.issn0021-8596en
dc.identifier.urihttps://hdl.handle.net/1959.11/13730-
dc.description.abstractThe use of selective breeding to reduce methane (CH₄) emissions is an option for reducing carbon emissions from livestock farming systems. The current study models UK lowland terminal sire (meat) sheep production systems to study the impacts of including CH₄ emissions and/or feed intake as breeding objective and selection criteria traits in sheep breeding systems, on the predicted genetic responses of production traits. Nine breeding goal traits and 15 selection index traits were modelled in a Suffolk breeding flock with a deterministic model of trait economic values (EVs). Methane was given an EV equivalent to a carbon price varying from ₤0 to ₤538/t CO₂-e. When currently used selection indices added feed intake as a breeding objective,CH₄ reductions of 0.15 and 0.05 kg CO₂-e/sheep/year were predicted when intake was, or was not, measured, respectively, with a zero carbon price. These reductions were relatively insensitive to carbon price. Overall economic (index) response to selection was insensitive to carbon price and increased with higher feed costs, when neither CH₄ nor feed intake was measured. When CH₄ and/or intake were measured, overall economic responses increased with higher carbon prices, when feed costs were zero. Methane and intake responses were only sensitive to carbon price (whether CH₄ and intake were measured or not) when feed costs were zero. To achieve a desired reduction of 0.1 kg CH₄/head/year (cumulative 30% reduction in 20 years) when feed costs were zero, CH₄ and/or intake needed to be measured. If CH₄ was measured, carbon price needed to be >₤50/t CO₂-e; if intake was measured carbon price needed to be >₤100/t CO₂-e. Including feed intake as a breeding objective trait with non-zero feed costs should assist in reducing CH₄ in breeding programmes. Selective breeding of terminal sheep by index selection has the potential to contribute a reduction of up to 0.27 kg CO₂-e per ewe per annum, depending on the traits measured, feed costs and carbon price. This would help meet the UK Government's greenhouse gas reduction targets for farming systems.en
dc.languageenen
dc.publisherCambridge University Pressen
dc.relation.ispartofThe Journal of Agricultural Scienceen
dc.titleReducing methane emissions by including methane production or feed intake in genetic selection programmes for Suffolk sheepen
dc.typeJournal Articleen
dc.identifier.doi10.1017/S0021859612001037en
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnameDaviden
local.contributor.firstnameJoanneen
local.subject.for2008070201 Animal Breedingen
local.subject.seo2008830310 Sheep - Meaten
local.subject.seo2008830311 Sheep - Woolen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolAnimal Scienceen
local.profile.emaildcottle2@une.edu.auen
local.profile.emailJoanne.Conington@sruc.ac.uken
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20130218-132457en
local.publisher.placeUnited Kingdomen
local.format.startpage872en
local.format.endpage888en
local.identifier.scopusid84887991561en
local.peerreviewedYesen
local.identifier.volume151en
local.identifier.issue6en
local.contributor.lastnameCottleen
local.contributor.lastnameConingtonen
dc.identifier.staffune-id:dcottle2en
local.profile.orcid0000-0003-3875-3465en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:13942en
dc.identifier.academiclevelAcademicen
local.title.maintitleReducing methane emissions by including methane production or feed intake in genetic selection programmes for Suffolk sheepen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorCottle, Daviden
local.search.authorConington, Joanneen
local.uneassociationUnknownen
local.year.published2013en
local.subject.for2020300305 Animal reproduction and breedingen
local.subject.seo2020100412 Sheep for meaten
local.subject.seo2020100413 Sheep for woolen
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