Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/2725
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dc.contributor.authorJohnston, Daviden
dc.contributor.authorReverter, Antonioen
dc.contributor.authorFerguson, DMen
dc.contributor.authorThompson, John Mitchellen
dc.contributor.authorBurrow, HMen
dc.date.accessioned2009-10-28T16:10:00Z-
dc.date.issued2003-
dc.identifier.citationAustralian Journal of Agricultural Research, 54(2), p. 135-147en
dc.identifier.issn1444-9838en
dc.identifier.issn0004-9409en
dc.identifier.issn1836-5795en
dc.identifier.issn1836-0947en
dc.identifier.urihttps://hdl.handle.net/1959.11/2725-
dc.description.abstractMeat quality measures, including objective measures of tenderness (shear force and compression), were taken on 2 muscles ['M. longissimus thoracis et lumborum' (LTL) and 'M. semitendinosus' (ST)] from 7566 from temperate (TEMP) and tropically adapted (TROP) beef cattle breeds. Animals were finished to 1 of 3 market carcass weight end-points (220, 280, or 340 kg) either on pasture or in a feedlot, and in 2 different geographic regions for TROP. Both the phenotypic and genetic expression of the traits were estimated at each market weight and for each finishing regime. Heritabilities and correlations between the traits were estimated for TEMP and TROP separately. Smaller additive variances and heritabilities were observed for temperate breeds compared with tropically adapted breeds for most of the traits studied. For TROP, the heritability of traits measured on the ST muscle [compression (ST_C), shear force (ST_SF), and L* Minolta lightness value (ST_L*)] was 0.27, 0.42, and 0.16, respectively, and for traits measured on the LTL muscle [compression (LTL_C), shear force (LTL_SF), L* Minolta lightness value (LTL_L*), a* Minolta redness value (LTL_a*), cooking loss% (LTL_CL%), and consumer assessed tenderness score (LTL_TEND)] 0.19, 0.30, 0.18, 0.13, 0.20, and 0.31, respectively. For TEMP, the heritability of traits measured on the ST muscle [ST_C, ST_SF, ST_L*, a* Minolta redness value (ST_a*), cooking loss % (ST_CL%)] was 0.12, 0.11, 0.17, 0.13, and 0.15, respectively, and of traits measured on the LTL muscle (LTL_C, LTL_SF, LTL_L, and LTL_TEND) were 0.08, 0.09, 0.17 and 0.18 respectively. Genetic correlations were moderate to high for tenderness measures (shear force and compression) between muscles for the same tenderness measure (e.g. LTL_SF and ST_SF was 0.46 for TROP) and within a muscle for the different measures (e.g. LTL_SF and LTL_L* for TROP was -0.40). The genetic relationship between LTL_SF and LTL_TEND was -0.79 and -0.49 for TROP and TEMP, respectively. Finishing system affected the phenotypic expression of all traits. Pasture-finished, compared with feedlot-finished, animals had higher shear force and compression measures, darker meat colour, and lower sensory tenderness scores for both TEMP and TROP. For TROP, heifers had higher shear force and compression measures, lower sensory tenderness scores, and darker meat colour (lower L* values) than steers. Genetic correlations between markets were genera;;y high and close to unity with the exception of the ST_L*, LTL_L*, ST_C, and ST_SF for TEMP. Geographic region had little effect on the phenotypic and genetic expression of meat quality traits for TROP. Genetic correlations between finishing regimes for all traits were positive and close to unity, with the exception of ST_C and LTL_SF for TEMP, and LTL_L* and LTL_CL% for TROP. Genetic improvement of meat quality traits is a possibility for tropically adapted breeds given the moderate heritabilities, adequate phenotypic variance, generally favourable genetic correlations between traits, and little evidence of genotype by environment interactions.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofAustralian Journal of Agricultural Researchen
dc.titleGenetic and phenotypic characterisation of animal carcass, and meat quality traits from temperate and tropically adapted beef breeds: 3: Meat quality traitsen
dc.typeJournal Articleen
dc.identifier.doi10.1071/AR02087en
dc.subject.keywordsAnimal Productionen
local.contributor.firstnameDaviden
local.contributor.firstnameAntonioen
local.contributor.firstnameDMen
local.contributor.firstnameJohn Mitchellen
local.contributor.firstnameHMen
local.subject.for2008070299 Animal Production not elsewhere classifieden
local.subject.seo2008830301 Beef Cattleen
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.emaildjohnsto@une.edu.auen
local.profile.emailareverte@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.epublicationsrecordpes:913en
local.publisher.placeAustraliaen
local.format.startpage135en
local.format.endpage147en
local.identifier.scopusid0037239520en
local.peerreviewedYesen
local.identifier.volume54en
local.identifier.issue2en
local.title.subtitle3: Meat quality traitsen
local.contributor.lastnameJohnstonen
local.contributor.lastnameReverteren
local.contributor.lastnameFergusonen
local.contributor.lastnameThompsonen
local.contributor.lastnameBurrowen
dc.identifier.staffune-id:djohnstoen
dc.identifier.staffune-id:areverteen
dc.identifier.staffune-id:jthompsoen
dc.identifier.staffune-id:hburrow2en
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.identifier.unepublicationidune:2801en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleGenetic and phenotypic characterisation of animal carcass, and meat quality traits from temperate and tropically adapted beef breedsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.urlhttp://nla.gov.au/anbd.bib-an2856653en
local.search.authorJohnston, Daviden
local.search.authorReverter, Antonioen
local.search.authorFerguson, DMen
local.search.authorThompson, John Mitchellen
local.search.authorBurrow, HMen
local.uneassociationUnknownen
local.year.published2003en
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Journal Article
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