Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/22339
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dc.contributor.authorCafe, Lindaen
dc.contributor.authorMcKiernan, W Aen
dc.contributor.authorRobinson, Dorothyen
dc.date.accessioned2018-01-16T10:06:00Z-
dc.date.issued2018-
dc.identifier.citationAnimal Production Science, 58(1), p. 185-192en
dc.identifier.issn1836-5787en
dc.identifier.issn1836-0939en
dc.identifier.urihttps://hdl.handle.net/1959.11/22339-
dc.description.abstractThe aim of the present study was to assess the effect of selection for increased muscling on maternal productivity of a temperate beef cow herd. Cows of predominantly Angus breeding were selected using visual muscle score (1-15 scale, where 1 = lightest and 15 = heaviest muscling) into low- and high-muscled animals, and mated to Angus bulls with low or high muscularity. Initially, low-muscled cows were mated to low-muscled bulls to create the Low line, and high-muscled bulls and cows were mated to create the High line. On discovering that some High cattle carried the myostatin (821 del11) gene, a second High line was created to distinguish between cattle with no copies of the myostatin gene (High line) and those with one copy (HighHet line). Data from 12 breeding cycles, consisting of 2003 joining records, and 1713 resulting weaning records were analysed to assess maternal productivity. Cows from the three lines were similar in weight (547, 548 and 550 kg, P = 0.9), but varied in body composition - from Low to High to HighHet cows, muscling traits increased and fatness traits decreased (all P < 0.001). Compared with Low cows, High cows had a 4.4 units higher muscle score, 10% higher eye muscle area and 21% less fat, and HighHet cows had a 7.1 units higher muscle score, 17% higher eye muscle area and 45% less fat. There were no significant effects of selection for increased muscling on live birth or weaning rates, or weaning weight (all P > 0.1). Dystocia levels of Low and HighHet maidens or cows did not differ significantly, but High maidens or cows had less dystocia (P = 0.013). Low, High and HighHet cows weaned 218, 225 and 216 kg of calf/cow joined.year, indicating similar maternal productivity.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofAnimal Production Scienceen
dc.titleSelection for increased muscling is not detrimental to maternal productivity traits in Angus cowsen
dc.typeJournal Articleen
dc.identifier.doi10.1071/an13023en
dc.subject.keywordsAnimal Breedingen
dc.subject.keywordsAnimal Reproductionen
local.contributor.firstnameLindaen
local.contributor.firstnameW Aen
local.contributor.firstnameDorothyen
local.subject.for2008070201 Animal Breedingen
local.subject.for2008070206 Animal Reproductionen
local.subject.seo2008830301 Beef Cattleen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emaildrobin27@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20160814-090323en
local.publisher.placeAustraliaen
local.format.startpage185en
local.format.endpage192en
local.identifier.scopusid85037026571en
local.peerreviewedYesen
local.identifier.volume58en
local.identifier.issue1en
local.contributor.lastnameCafeen
local.contributor.lastnameMcKiernanen
local.contributor.lastnameRobinsonen
dc.identifier.staffune-id:drobin27en
local.profile.orcid0000-0001-6113-1141en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:22528en
local.identifier.handlehttps://hdl.handle.net/1959.11/22339en
dc.identifier.academiclevelAcademicen
local.title.maintitleSelection for increased muscling is not detrimental to maternal productivity traits in Angus cowsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorCafe, Lindaen
local.search.authorMcKiernan, W Aen
local.search.authorRobinson, Dorothyen
local.uneassociationUnknownen
local.year.published2018en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/165dc412-8bda-4ccb-8e63-a2da32a3d5b8en
local.subject.for2020300305 Animal reproduction and breedingen
local.subject.seo2020100401 Beef cattleen
dc.notification.tokena1566cd2-3805-4375-9bd0-f0cf4b3a90f1en
Appears in Collections:Journal Article
School of Environmental and Rural Science
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