Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/21873
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSantos, Brunoen
dc.contributor.authorVan Der Werf, Julius Hen
dc.contributor.authorGibson, Johnen
dc.contributor.authorByrne, Timothy Jen
dc.contributor.authorAmer, Peter Ren
dc.date.accessioned2017-09-18T16:33:00Z-
dc.date.issued2017-
dc.identifier.citationGenetics Selection Evolution, 49(1), p. 1-16en
dc.identifier.issn1297-9686en
dc.identifier.issn0999-193Xen
dc.identifier.urihttps://hdl.handle.net/1959.11/21873-
dc.description.abstractBackground: Performance recording and genotyping in the multiplier tier of multi-tiered sheep breeding schemes could potentially reduce the difference in the average genetic merit between nucleus and commercial flocks, and create additional economic benefits for the breeding structure. Methods: The genetic change in a multiple-trait breeding objective was predicted for various selection strategies that included performance recording, parentage testing and genomic selection. A deterministic simulation model was used to predict selection differentials and the flow of genetic superiority through the different tiers. Cumulative discounted economic benefits were calculated based on trait gains achieved in each of the tiers and considering the extra revenue and associated costs of applying recording, genotyping and selection practices in the multiplier tier of the breeding scheme. Results: Performance recording combined with genomic or parentage information in the multiplier tier reduced the genetic lag between the nucleus and commercial flock by 2 to 3 years. The overall economic benefits of improved performance in the commercial tier offset the costs of recording the multiplier. However, it took more than 18 years before the cumulative net present value of benefits offset the costs at current test prices. Strategies in which recorded multiplier ewes were selected as replacements for the nucleus flock did modestly increase profitability when compared to a closed nucleus structure. Applying genomic selection is the most beneficial strategy if testing costs can be reduced or by genotyping only a proportion of the selection candidates. When the cost of genotyping was reduced, scenarios that combine performance recording with genomic selection were more profitable and reached break even point about 10 years earlier. Conclusions: Economic benefits can be generated in multiplier flocks by implementing performance recording in conjunction with either DNA pedigree recording or genomic technology. These recording practices reduce the long genetic lag between the nucleus and commercial flocks in multi-tiered breeding programs. Under current genotyping costs, the time to break even was found to be generally very long, although this varied between strategies. Strategies using either genomic selection or DNA pedigree verification were found to be economically viable provided the price paid for the tests is lower than current prices, in the long-term.en
dc.languageenen
dc.publisherBioMed Central Ltden
dc.relation.ispartofGenetics Selection Evolutionen
dc.titleGenetic and economic benefits of selection based on performance recording and genotyping in lower tiers of multi-tiered sheep breeding schemesen
dc.typeJournal Articleen
dc.identifier.doi10.1186/s12711-016-0281-2en
dcterms.accessRightsGolden
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnameBrunoen
local.contributor.firstnameJulius Hen
local.contributor.firstnameJohnen
local.contributor.firstnameTimothy Jen
local.contributor.firstnamePeter Ren
local.subject.for2008070201 Animal Breedingen
local.subject.seo2008830311 Sheep - Woolen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailbsantos@myune.edu.auen
local.profile.emailjvanderw@une.edu.auen
local.profile.emailjgibson5@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-chute-20170503-085438en
local.publisher.placeUnited Kingdomen
local.format.startpage1en
local.format.endpage16en
local.identifier.scopusid85011277381en
local.peerreviewedYesen
local.identifier.volume49en
local.identifier.issue1en
local.access.fulltextYesen
local.contributor.lastnameSantosen
local.contributor.lastnameVan Der Werfen
local.contributor.lastnameGibsonen
local.contributor.lastnameByrneen
local.contributor.lastnameAmeren
dc.identifier.staffune-id:bsantosen
dc.identifier.staffune-id:jvanderwen
dc.identifier.staffune-id:jgibson5en
local.profile.orcid0000-0003-2512-1696en
local.profile.orcid0000-0003-0371-2401en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:22064en
local.identifier.handlehttps://hdl.handle.net/1959.11/21873en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleGenetic and economic benefits of selection based on performance recording and genotyping in lower tiers of multi-tiered sheep breeding schemesen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorSantos, Brunoen
local.search.authorVan Der Werf, Julius Hen
local.search.authorGibson, Johnen
local.search.authorByrne, Timothy Jen
local.search.authorAmer, Peter Ren
local.uneassociationUnknownen
local.identifier.wosid000394713300001en
local.year.published2017en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/9206077c-eec9-420a-925f-204b20f6777den
local.subject.for2020300305 Animal reproduction and breedingen
local.subject.seo2020100413 Sheep for woolen
Appears in Collections:Journal Article
Files in This Item:
2 files
File Description SizeFormat 
Show simple item record

SCOPUSTM   
Citations

15
checked on Dec 14, 2024

Page view(s)

1,584
checked on Jun 23, 2024

Download(s)

4
checked on Jun 23, 2024
Google Media

Google ScholarTM

Check

Altmetric


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.