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Gestational Heat Stress Alters Postnatal Offspring Body Composition Indices and Metabolic Parameters in Pigs

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dc.contributor.authorBoddicker, Rebecca L.en
dc.contributor.authorSeibert, Jacob T.en
dc.contributor.authorJohnson, Jay S.en
dc.contributor.authorPearce, Sarah C.en
dc.contributor.authorSelsby, Joshua T.en
dc.contributor.authorGabler, Nicholas K.en
dc.contributor.authorLucy, Matthew C.en
dc.contributor.authorSafranski, Timothy J.en
dc.contributor.authorRhoads, Robert P.en
dc.contributor.authorBaumgard, Lance H.en
dc.contributor.authorRoss, Jason W.en
dc.contributor.departmentAnimal and Poultry Sciencesen
dc.date.accessioned2017-01-12T20:16:17Zen
dc.date.available2017-01-12T20:16:17Zen
dc.date.issued2014-11-10en
dc.description.abstractThe study objectives were to test the hypothesis that heat stress (HS) during gestational development alters postnatal growth, body composition, and biological response to HS conditions in pigs. To investigate this, 14 first parity crossbred gilts were exposed to one of four environmental treatments (TNTN, TNHS, HSTN, or HSHS) during gestation. TNTN and HSHS dams were exposed to thermal neutral (TN, cyclical 18–22ºC) or HS conditions (cyclical 28–34ºC) during the entire gestation, respectively. Dams assigned to HSTN and TNHS treatments were heat-stressed for the first or second half of gestation, respectively. Postnatal offspring were exposed to one of two thermal environments for an acute (24 h) or chronic (five weeks) duration in either constant TN (21ºC) or HS (35ºC) environment. Exposure to chronic HS during their growth phase resulted in decreased longissimus dorsi cross-sectional area (LDA) in offspring from HSHS and HSTN treated dams whereas LDA was larger in offspring from dams in TNTN and TNHS conditions. Irrespective of HS during prepubertal postnatal growth, pigs from dams that experienced HS during the first half of gestation (HSHS and HSTN) had increased (13.9%) subcutaneous fat thickness compared to pigs from dams exposed to TN conditions during the first half of gestation. This metabolic repartitioning towards increased fat deposition in pigs from dams heat-stressed during the first half of gestation was accompanied by elevated blood insulin concentrations (33%; P = 0.01). Together, these results demonstrate HS during the first half of gestation altered metabolic and body composition parameters during future development and in biological responses to a subsequent HS challenge.en
dc.description.versionPublished versionen
dc.format.extent? - ? (11) page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0110859en
dc.identifier.issn1932-6203en
dc.identifier.issue11en
dc.identifier.urihttp://hdl.handle.net/10919/74288en
dc.identifier.volume9en
dc.language.isoenen
dc.publisherPLOSen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000344816700012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectintrauterine growth restrictionen
dc.subjectmuscle-fiber developmenten
dc.subjectmaternal undernutritionen
dc.subjectplacental insufficiencyen
dc.subjectrearing-temperatureen
dc.subjectskeletal-muscleen
dc.subjectprenatal stressen
dc.subjectbirth-weighten
dc.subjectfeed-intakeen
dc.subjectguinea-pigen
dc.titleGestational Heat Stress Alters Postnatal Offspring Body Composition Indices and Metabolic Parameters in Pigsen
dc.title.serialPLOS ONEen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciencesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/Animal and Poultry Sciencesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/CALS T&R Facultyen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Faculty of Health Sciencesen

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