Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/2945
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dc.contributor.authorLi, Len
dc.contributor.authorOddy, Huttonen
dc.contributor.authorNolan, John Vivianen
dc.date.accessioned2009-11-06T16:23:00Z-
dc.date.issued2008-
dc.identifier.citationAustralian Journal of Experimental Agriculture, 48(5), p. 657-665en
dc.identifier.issn1446-5574en
dc.identifier.issn0816-1089en
dc.identifier.issn1836-5787en
dc.identifier.issn1836-0939en
dc.identifier.urihttps://hdl.handle.net/1959.11/2945-
dc.description.abstractRealised wool growth relative to genetic potential depends on the availability of nutrients to the wool follicle (Hynd 1989; Williams 1978, 1995). Nutrient availability, in turn, is determined by the supply of nutrients absorbed from the gut (a function of diet) and those released from body stores of protein and fat (Adams et al. 2006). It has been proposed that Merino genotypes selected for or against wool growth have different rates of protein and energy metabolism (Adams et al. 2006; Adams and Cronjé 2003). Protein and energy metabolism play an important role in regulating body composition, which has consequences for the survival of the sheep when underfed, and later for the rate of repletion of body tissues when sufficient feed becomes available (Chilliard et al. 2000). Positively moderate genetic correlation between clean wool growth and liveweight (0.22 ± 0.09), and eye-muscle depth (0.35 ± 0.19) (Safari and Fogarty 2003) indicates that it is possible, genetically, to achieve improvements in both wool and meat production at the same time. However, without knowledge of the effects of such selection on feed intake, it is not clear whether the improvements in production result from an increased efficiency of ingested protein and energy utilisation for wool production and body-tissue growth, or whether these sheep simply consume more feed and use more nutrients. The present study was designed to determine whether sheep with different genetic capacity for wool production alter their energy and protein metabolism in response to different nutrient supply. This study contains estimates of whole-body protein and energy metabolism and their relationships with body composition in Merino sheep of known estimated breeding values (EBVs) for wool growth and liveweight in response to different feed intakes.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofAustralian Journal of Experimental Agricultureen
dc.titleWhole-body protein metabolism and energy expenditure in sheep selected for divergent wool production when fed above or below maintenanceen
dc.typeJournal Articleen
dc.identifier.doi10.1071/EA07231en
dc.subject.keywordsAnimal Nutritionen
local.contributor.firstnameLilyen
local.contributor.firstnameHuttonen
local.contributor.firstnameJohn Vivianen
local.subject.for2008070204 Animal Nutritionen
local.subject.seo2008830310 Sheep - Meaten
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emaillli3@une.edu.auen
local.profile.emailhoddy2@une.edu.auen
local.profile.emailjnolan@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:6461en
local.publisher.placeAustraliaen
local.format.startpage657en
local.format.endpage665en
local.identifier.scopusid41849145665en
local.peerreviewedYesen
local.identifier.volume48en
local.identifier.issue5en
local.contributor.lastnameLien
local.contributor.lastnameOddyen
local.contributor.lastnameNolanen
dc.identifier.staffune-id:lli3en
dc.identifier.staffune-id:hoddy2en
dc.identifier.staffune-id:jnolanen
local.profile.orcid0000-0003-1783-1049en
local.profile.orcid0000-0001-7949-950Xen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:3024en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleWhole-body protein metabolism and energy expenditure in sheep selected for divergent wool production when fed above or below maintenanceen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.urlhttp://nla.gov.au/anbd.bib-an25950952en
local.search.authorLi, Lilyen
local.search.authorOddy, Huttonen
local.search.authorNolan, John Vivianen
local.uneassociationUnknownen
local.year.published2008-
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