Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/16797
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dc.contributor.authorAmer, Peteren
dc.contributor.authorLudemann, C Ien
dc.contributor.authorHermesch, Susanneen
dc.date.accessioned2015-03-23T15:01:00Z
dc.date.issued2014en
dc.identifier.citationJournal of Animal Science, 92(12), p. 5345-5357en
dc.identifier.issn1525-3163en
dc.identifier.issn0021-8812en
dc.identifier.urihttps://hdl.handle.net/1959.11/16797en
dc.description.abstractThe objective of this study was to develop a transparent, comprehensive, and flexible model for each trait for the formulation of breeding objectives for sow traits in swine breeding programs. Economic values were derived from submodels considering a typical Australian pig production system. Differences in timing and expressions of traits were accounted for to derive economic weights that were compared on the basis of their relative size after multiplication by their corresponding genetic standard deviation to account for differences in scale and genetic variability present for each trait. The number of piglets born alive had the greatest contribution (27.1%) to a subindex containing only maternal traits, followed by daily gain (maternal; 22.0%) and sow mature weight (15.0%). Other traits considered in the maternal breeding objective were preweaning survival (11.8%), sow longevity (12.5%), gilt age at puberty (8.7%), and piglet survival at birth (3.1%). The economic weights for number of piglets born alive and preweaning piglet survival were found to be highly dependent on the definition of scale of enterprise, with each economic value increasing by approximately 100% when it was assumed that the value of extra output per sow could be captured, rather than assuming a consequent reduction in the number of sows to maintain a constant level of output from a farm enterprise. In the context of a full maternal line index that must account also for the expression of direct genetic traits by the growing piglet progeny of sows, the maternal traits contributed approximately half of the variation in the overall breeding objective. Deployment of more comprehensive maternal line indexes incorporating the new maternal traits described would lead to more balanced selection outcomes and improved survival of pigs. Future work could facilitate evaluation of the economic impacts of desired-gains indexes, which could further improve animal welfare through improved sow and piglet survival. The results justify further development of selection criteria and breeding value prediction systems for a wider range of maternal traits relevant to pig production systems.en
dc.languageenen
dc.publisherAmerican Society of Animal Scienceen
dc.relation.ispartofJournal of Animal Scienceen
dc.titleEconomic weights for maternal traits of sows, including sow longevityen
dc.typeJournal Articleen
dc.identifier.doi10.2527/jas.2014-7943en
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnamePeteren
local.contributor.firstnameC Ien
local.contributor.firstnameSusanneen
local.subject.for2008070201 Animal Breedingen
local.subject.seo2008830308 Pigsen
local.profile.schoolAnimal Genetics and Breeding Uniten
local.profile.emailpamer@une.edu.auen
local.profile.emailSusanne.Hermesch@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20150227-145949en
local.publisher.placeUnited States of Americaen
local.format.startpage5345en
local.format.endpage5357en
local.peerreviewedYesen
local.identifier.volume92en
local.identifier.issue12en
local.contributor.lastnameAmeren
local.contributor.lastnameLudemannen
local.contributor.lastnameHermeschen
dc.identifier.staffune-id:pameren
dc.identifier.staffune-id:skahtenben
local.profile.orcid0000-0002-9647-5988en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:17030en
local.identifier.handlehttps://hdl.handle.net/1959.11/16797en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleEconomic weights for maternal traits of sows, including sow longevityen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 100<br />Views: 101<br />Downloads: 0en
local.search.authorAmer, Peteren
local.search.authorLudemann, C Ien
local.search.authorHermesch, Susanneen
local.uneassociationUnknownen
local.year.published2014en
local.subject.for2020300305 Animal reproduction and breedingen
local.subject.seo2020100410 Pigsen
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
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