Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/22505
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dc.contributor.authorMortimer, S Ien
dc.contributor.authorHatcher, Sen
dc.contributor.authorPonnampalam, E Nen
dc.contributor.authorPearce, K Len
dc.contributor.authorPethick, D Wen
dc.contributor.authorFogarty, N Men
dc.contributor.authorVan Der Werf, Julius Hen
dc.contributor.authorBrown, D Jen
dc.contributor.authorSwan, Aen
dc.contributor.authorJacob, R Hen
dc.contributor.authorGeesink, G Hen
dc.contributor.authorHopkins, D Len
dc.contributor.authorEdwards, J E Hockingen
dc.date.accessioned2018-02-13T10:43:00Z-
dc.date.issued2017-
dc.identifier.citationJournal of Animal Science, 95(6), p. 2385-2398en
dc.identifier.issn1525-3163en
dc.identifier.issn0021-8812en
dc.identifier.urihttps://hdl.handle.net/1959.11/22505-
dc.description.abstractGenetic correlations between 29 wool production and quality traits and 14 whole carcass measures and carcass component traits were estimated from the Information Nucleus of 8 flocks managed across a range of Australian sheep production environments and genetically linked. Wool data were from over 5,000 Merino progeny born over 5 yr, whereas carcass data were from over 1,200 wether progeny of over 176 sires, slaughtered at about 21 kg carcass weight, on average. Wool traits included yearling and adult records for wool weight, fiber diameter, fiber diameter variation, staple strength, scoured color, and visual scores for breech and body wrinkle. Whole carcass measures included HCW, dressing percentage (DP), and various measures of fat depth and eye muscle dimensions. Carcass components were obtained by dissection, and lean meat yield (LMY) was predicted. Heritability estimates for whole carcass measures ranged from 0.12 ± 0.08 to 0.35 ± 0.10 and ranged from 0.17 ± 0.10 to 0.46 ± 0.10 for carcass dissection traits, with no evidence of important genotype × environment interactions. Genetic correlations indicated that selection for increased clean wool weight will result in reduced carcass fat (−0.17 to −0.34) and DP (−0.48 ± 0.15), with little effect on carcass muscle. Selection for lower fiber diameter will reduce HCW (−0.48 ± 0.15) as well as carcass fat (0.14 to 0.27) and muscle (0.21 to 0.50). There were high genetic correlations between live animal measures of fat and muscle depth and the carcass traits (generally greater than 0.5 in size). Selection to increase HCW (and DP) will result in sheep with fewer wrinkles on the body (−0.57 ± 0.10) and barer breeches (−0.74 ± 0.12, favorable), with minor deterioration in scoured wool color (reduced brightness and increased yellowness). Selection for reduced fat will also result in sheep with fewer body wrinkles (−0.42 to −0.79). Increasing LMY in Merinos through selection would result in a large reduction in carcass fat and DP (−0.66 to −0.84), with a smaller increase in carcass muscle and some increase in wool weight and wrinkles. Although no major antagonisms are apparent between the wool and carcass traits, developing selection indexes for dual-purpose wool and meat breeding objectives will require accurate estimates of genetic parameters to ensure that unfavorable relationships are suitably considered. The findings will aid development of dual-purpose wool and meat breeding objectives.en
dc.languageenen
dc.publisherOxford University Pressen
dc.relation.ispartofJournal of Animal Scienceen
dc.titleGenetic correlations between wool traits and carcass traits in Merino sheepen
dc.typeJournal Articleen
dc.identifier.doi10.2527/jas2017.1385en
dcterms.accessRightsUNE Greenen
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnameS Ien
local.contributor.firstnameSen
local.contributor.firstnameE Nen
local.contributor.firstnameK Len
local.contributor.firstnameD Wen
local.contributor.firstnameN Men
local.contributor.firstnameJulius Hen
local.contributor.firstnameD Jen
local.contributor.firstnameAen
local.contributor.firstnameR Hen
local.contributor.firstnameG Hen
local.contributor.firstnameD Len
local.contributor.firstnameJ E Hockingen
local.subject.for2008070201 Animal Breedingen
local.subject.seo2008830311 Sheep - Woolen
local.subject.seo2008830310 Sheep - Meaten
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailjvanderw@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-chute-20170807-095359en
local.publisher.placeUnited States of Americaen
local.format.startpage2385en
local.format.endpage2398en
local.identifier.scopusid85020437892en
local.peerreviewedYesen
local.identifier.volume95en
local.identifier.issue6en
local.access.fulltextYesen
local.contributor.lastnameMortimeren
local.contributor.lastnameHatcheren
local.contributor.lastnamePonnampalamen
local.contributor.lastnamePearceen
local.contributor.lastnamePethicken
local.contributor.lastnameFogartyen
local.contributor.lastnameVan Der Werfen
local.contributor.lastnameBrownen
local.contributor.lastnameSwanen
local.contributor.lastnameJacoben
local.contributor.lastnameGeesinken
local.contributor.lastnameHopkinsen
local.contributor.lastnameEdwardsen
dc.identifier.staffune-id:jvanderwen
local.profile.orcid0000-0003-2512-1696en
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local.identifier.unepublicationidune:22694en
local.identifier.handlehttps://hdl.handle.net/1959.11/22505en
dc.identifier.academiclevelAcademicen
local.title.maintitleGenetic correlations between wool traits and carcass traits in Merino sheepen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorMortimer, S Ien
local.search.authorHatcher, Sen
local.search.authorPonnampalam, E Nen
local.search.authorPearce, K Len
local.search.authorPethick, D Wen
local.search.authorFogarty, N Men
local.search.authorVan Der Werf, Julius Hen
local.search.authorBrown, D Jen
local.search.authorSwan, Aen
local.search.authorJacob, R Hen
local.search.authorGeesink, G Hen
local.search.authorHopkins, D Len
local.search.authorEdwards, J E Hockingen
local.open.fileurlhttps://rune.une.edu.au/web/retrieve/da090efb-07a8-419b-b1f1-cbc07fee1c90en
local.uneassociationUnknownen
local.year.published2017en
local.fileurl.openhttps://rune.une.edu.au/web/retrieve/da090efb-07a8-419b-b1f1-cbc07fee1c90en
local.subject.for2020300305 Animal reproduction and breedingen
local.subject.seo2020100413 Sheep for woolen
local.subject.seo2020100412 Sheep for meaten
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School of Environmental and Rural Science
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