Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/3895
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dc.contributor.authorMarshall, Karen Lisaen
dc.contributor.authorHenshall, Jen
dc.contributor.authorVan Der Werf, Julius Hermanen
dc.date.accessioned2009-12-17T15:50:00Z-
dc.date.issued2002-
dc.identifier.citationAnimal Science, 74(2), p. 223-232en
dc.identifier.issn1748-748Xen
dc.identifier.issn1357-7298en
dc.identifier.urihttps://hdl.handle.net/1959.11/3895-
dc.description.abstractA simulation study, based on a closed sheepmeat breeding nucleus and incorporating marker-assisted selection (MAS), was used to evaluate response when different proportions of animals were marker typed. Two traits were included in the simulation: trait 1, a production trait where phenotypes were available prior to selection, and trait 2, a carcass trait where phenotypic information was not available on breeding animals. Selection on an index which comprised estimated breeding values (EBVs) for both traits was possible by calculating EBVs for trait 2 as the sum of EBVs for a polygenic component, obtained from a genetic regression, and EBVs for a major gene component, obtained by inferring genotypes at a major gene locus from a linked marker locus. Different marker typing strategies were evaluated. These differed in the criteria used to select progeny for typing, and in the proportion of male and female progeny selected. Typing progeny that were likely to be used as a breeding animal, but excluding those whose marker genotype could be predicted with reasonable certainty, was an efficient genotyping strategy. Close to maximum gain at the major gene locus was achieved when only a proportion of animals were marker typed (for example 90% of maximum response was achieved with a little over one-third of the selection candidates marker typed). This indicate the potential for substantial savings in relation to the cost of marker typing in commercial breeding flocks.en
dc.languageenen
dc.publisherCambridge University Pressen
dc.relation.ispartofAnimal Scienceen
dc.titleResponse from marker-assisted selection when various proportions of animals are marker typed: a multiple trait simulation study relevant to the sheepmeat industryen
dc.typeJournal Articleen
dc.subject.keywordsQuantitative Genetics (incl Disease and Trait Mapping Genetics)en
local.contributor.firstnameKaren Lisaen
local.contributor.firstnameJen
local.contributor.firstnameJulius Hermanen
local.subject.for2008060412 Quantitative Genetics (incl Disease and Trait Mapping Genetics)en
local.subject.seo2008830310 Sheep - Meaten
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailkmarsha2@une.edu.auen
local.profile.emailjvanderw@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:558en
local.publisher.placeLothian, United Kingdomen
local.format.startpage223en
local.format.endpage232en
local.peerreviewedYesen
local.identifier.volume74en
local.identifier.issue2en
local.title.subtitlea multiple trait simulation study relevant to the sheepmeat industryen
local.contributor.lastnameMarshallen
local.contributor.lastnameHenshallen
local.contributor.lastnameVan Der Werfen
dc.identifier.staffune-id:kmarsha2en
dc.identifier.staffune-id:jvanderwen
local.profile.orcid0000-0003-2512-1696en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:3990en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleResponse from marker-assisted selection when various proportions of animals are marker typeden
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.urlhttp://www.bsas.org.uk/Publications/Animal_Science/function.mysql-query/Volume_74_Part_2/223en
local.search.authorMarshall, Karen Lisaen
local.search.authorHenshall, Jen
local.search.authorVan Der Werf, Julius Hermanen
local.uneassociationUnknownen
local.year.published2002en
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