Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/6692
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dc.contributor.authorKlieve, Helen Margareten
dc.contributor.authorKinghorn, Brianen
dc.contributor.authorBarwick, Stephenen
dc.date.accessioned2010-10-12T13:49:00Z
dc.date.created1996en
dc.date.issued1997en
dc.identifier.urihttps://hdl.handle.net/1959.11/6692en
dc.description.abstractBest Linear Unbiassed Prediction provides a valuable mechanism through which effective selection practices can operate, potentially enhancing performance and producing significant increases in productivity and thus, frequently in profitability. However, current recognition of the potential risks associated with this enhanced performance through the impacts of risks such as inbreeding depression, offer a challenge to the effectiveness with which selection can operate. The broadening of the selection objective to address issues of risk in the selection process as described in this thesis integrates genetic objectives with economic perspectives. This is addressed through several areas. An initial consideration of this impact of accuracy in the selection process is undertaken from a single generational perspective. Longer term selection is addressed through the analysis of a range of selection and mating strategies including mate selection strategies that integrate increased genetic merit with the control of inbreeding (or similar risk factors). An assessment of long term strategies is undertaken through an adapted use of benefit cost methodology. ... The strategies were compared across a range of weightings on inbreeding (linked to decline in response). The results showed a preference for MS₀ (a mate selection option with no loss in response) over the selection and mating strategy (Pr) - however this preference was mediated when the additional cost of managing mate selection was taken into account and the weighting on inbreeding was low. Interestingly, the relative value of the MS₅ strategy was seen across all alternatives. This marked a reasonable point at which the benefits from reduced inbreeding might outweight the costs associated with some decline in potential response. While this analysis was undertaken for two levels of interest rate (0.6 and 1.0) and for two variations in the model, with one including an additional weighting on mate selection strategies to reflect the additional management costs they impose, the final results were not highly sensitive to these factors, indicating the strength of this approach for this assessment.en
dc.languageenen
dc.titleSelection and mating strategies risks and rewardsen
dc.typeThesis Doctoralen
dcterms.accessRightsUNE Greenen
local.contributor.firstnameHelen Margareten
local.contributor.firstnameBrianen
local.contributor.firstnameStephenen
dcterms.RightsStatementCopyright 1996 - Helen Margaret Klieveen
dc.date.conferred1997en
local.thesis.degreelevelDoctoralen
local.thesis.degreenameDoctor of Philosophyen
local.contributor.grantorUniversity of New Englanden
local.profile.schoolAdministrationen
local.profile.schoolAnimal Genetics and Breeding Uniten
local.profile.emailbkinghor@une.edu.auen
local.profile.emailsbarwick@une.edu.auen
local.output.categoryT2en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordvtls008574250en
local.access.fulltextYesen
local.contributor.lastnameKlieveen
local.contributor.lastnameKinghornen
local.contributor.lastnameBarwicken
dc.identifier.staffune-id:bkinghoren
dc.identifier.staffune-id:sbarwicken
local.profile.roleauthoren
local.profile.rolesupervisoren
local.profile.rolesupervisoren
local.identifier.unepublicationidune:6852en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleSelection and mating strategies risks and rewardsen
local.output.categorydescriptionT2 Thesis - Doctorate by Researchen
local.description.statisticsepubsVisitors: 88<br />Views: 82<br />Downloads: 3en
local.thesis.borndigitalnoen
local.search.authorKlieve, Helen Margareten
local.search.supervisorKinghorn, Brianen
local.search.supervisorBarwick, Stephenen
local.open.fileurlhttps://rune.une.edu.au/web/retrieve/fd571c56-31d0-4ac2-8c79-cdb43e1b03dcen
local.open.fileurlhttps://rune.une.edu.au/web/retrieve/772e8504-5d48-43b7-90cd-8c78c6d55d72en
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Thesis Doctoral
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