Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/4376
Full metadata record
DC FieldValueLanguage
dc.contributor.authorWolcott, Matthew Leeen
dc.contributor.authorJohnston, Daviden
dc.contributor.authorBarwick, Stephenen
dc.contributor.authorIker, CLen
dc.contributor.authorThompson, Johnen
dc.contributor.authorBurrow, Heather Men
dc.date.accessioned2010-02-01T15:15:00Z-
dc.date.issued2009-
dc.identifier.citationAnimal Production Science, 49(6), p. 383-398en
dc.identifier.issn1836-5787en
dc.identifier.issn1836-0939en
dc.identifier.urihttps://hdl.handle.net/1959.11/4376-
dc.description.abstractMeat quality and carcass traits were measured for 2180 feedlot finished Brahman (BRAH) and Tropical Composite (TCOMP) steers to investigate genetic and non-genetic influences on shear force, and other meat quality traits. Genetic and phenotypic correlations were estimated between carcass and meat quality traits, and with live animal measurements collected in steers from weaning to feedlot exit, and their heifer half-sibs up to their first mating, which were managed in Australia’s tropical or subtropical environments. Left sides of carcasses were tenderstretched (hung by the aitch-bone) while right sides were conventionally hung (by the Achilles tendon). Tenderstretching reduced mean shear force by 1.04 kg, and phenotypic variance by 77% of that observed in conventionally hung sides. Genotype differences existed for carcass traits, with TCOMP carcasses significantly heavier, fatter, with greater eye muscle area, and lower retail beef yield than BRAH. TCOMP had lower shear force, and higher percent intramuscular fat. Meat quality and carcass traits were moderately heritable, with estimates for shear force and compression of 0.33 and 0.19 for BRAH and 0.32 and 0.20 for TCOMP respectively. In both genotypes, estimates of heritability for carcass traits (carcass weight, P8 and rib fat depths, eye muscle area and retail beef yield) were consistently moderate to high (0.21 to 0.56). Shear force and compression were genetically correlated with percent intramuscular fat (r'g' = –0.26 and –0.57, respectively), and meat colour (r'g' = –0.41 and –0.68, respectively). For TCOMP, lower shear force was genetically related to decreased carcass P8 fat depth (r'g' = 0.51). For BRAH steers and heifers measured at pasture, fatness traits and growth rates were genetically correlated with shear force, although the magnitude of these relationships varied with time of measurement. Net feed intake was significantly genetically correlated with carcass rib fat depth (r'g' = 0.49), eye muscle area (r'g' = –0.42) and retail beef yield (r'g' = –0.61). These results demonstrate that selection to improve production and carcass traits can impact meat quality traits in tropically adapted cattle, and that genotype specific evaluations will be necessary to accommodate different genetic relationships between meat quality, carcass and live animal traits.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofAnimal Production Scienceen
dc.titleGenetics of meat quality and carcass traits and the impact of tenderstretching in two tropical beef genotypesen
dc.typeJournal Articleen
dc.identifier.doi10.1071/EA08275en
dcterms.accessRightsGolden
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnameMatthew Leeen
local.contributor.firstnameDaviden
local.contributor.firstnameStephenen
local.contributor.firstnameCLen
local.contributor.firstnameJohnen
local.contributor.firstnameHeather Men
local.subject.for2008070201 Animal Breedingen
local.subject.seo2008830301 Beef Cattleen
local.profile.schoolAnimal Genetics and Breeding Uniten
local.profile.schoolAnimal Genetics and Breeding Uniten
local.profile.schoolAnimal Genetics and Breeding Uniten
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailmwolcott@une.edu.auen
local.profile.emaildjohnsto@une.edu.auen
local.profile.emailsbarwick@une.edu.auen
local.profile.emailjthompso@une.edu.auen
local.profile.emailhburrow2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20091104-164624en
local.publisher.placeAustraliaen
local.format.startpage383en
local.format.endpage398en
local.identifier.scopusid66149170332en
local.peerreviewedYesen
local.identifier.volume49en
local.identifier.issue6en
local.access.fulltextYesen
local.contributor.lastnameWolcotten
local.contributor.lastnameJohnstonen
local.contributor.lastnameBarwicken
local.contributor.lastnameIkeren
local.contributor.lastnameThompsonen
local.contributor.lastnameBurrowen
dc.identifier.staffune-id:mwolcotten
dc.identifier.staffune-id:djohnstoen
dc.identifier.staffune-id:sbarwicken
dc.identifier.staffune-id:jthompsoen
dc.identifier.staffune-id:hburrow2en
local.profile.orcid0000-0001-6786-8742en
local.profile.orcid0000-0002-4995-8311en
local.profile.orcid0000-0002-7989-0426en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:4478en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleGenetics of meat quality and carcass traits and the impact of tenderstretching in two tropical beef genotypesen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorWolcott, Matthew Leeen
local.search.authorJohnston, Daviden
local.search.authorBarwick, Stephenen
local.search.authorIker, CLen
local.search.authorThompson, Johnen
local.search.authorBurrow, Heather Men
local.istranslatedNoen
local.uneassociationUnknownen
local.year.published2009en
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Journal Article
Files in This Item:
3 files
File Description SizeFormat 
Show simple item record

SCOPUSTM   
Citations

34
checked on Mar 23, 2024

Page view(s)

1,456
checked on Mar 24, 2024
Google Media

Google ScholarTM

Check

Altmetric


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