Acclimation to heat during incubation. 2. Embryo composition and residual egg yolk sac fatty acid profiles in chicks

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dc.contributor.authorYalçin S.
dc.contributor.authorBagdatlioglu N.
dc.contributor.authorBruggeman V.
dc.contributor.authorBabacanoglu E.
dc.contributor.authorUysal I.
dc.contributor.authorBuyse J.
dc.contributor.authorDecuypere E.
dc.contributor.authorSiegel P.B.
dc.date.accessioned2019-10-26T23:57:33Z
dc.date.available2019-10-26T23:57:33Z
dc.date.issued2008
dc.departmentEge Üniversitesien_US
dc.description.abstractThe aim of the research was to evaluate embryo composition and changes in egg yolk fatty acid composition during embryonic development as a function of incubation temperature and age of breeders. Eggs obtained from a common breeder stock at 3 ages: 32 (younger), 42 (mid age), and 65 (older) wk were divided into 2 groups and placed into 2 incubators: the control and the second where eggs were heat-acclimated (HA) at 38.5°C for 6 h daily from d 10 to 18 of incubation. Body composition of embryos and chicks were measured on d 14, 18, and at hatch, respectively. Fatty acid profiles of yolk and residual egg yolk sac of chicks were analyzed before incubation and at hatch, respectively. Moisture content of embryos was highest on d 14 and then decreased regardless of parental age and incubation temperature. Moisture content of chicks at hatch from 42- and 65-wk parents were lower than those of chicks from 32-wk parents, whereas the trend in chick fat content was opposite. Incubation temperature had no effect on composition of chicks. Consistently lower cis-4,7,10,13,16,19- eicosapentaenoic (docosahexaenoic acid, DHA; 22:6n-3) and cis-11,14,17- eicosatrienoic (20:3n-3) fatty acids in the residual yolk sac of chicks than in egg yolks before incubation may have resulted from preferential uptake from the yolk. The DHA content in the residual yolk sac was considerably higher in chicks from older parents incubated at HA, whereas, in contrast, levels of 18:3n-3 were lower. Also, chicks from younger parents in the HA treatment had lower transported 18:3n-3 and higher levels of transported DHA. It may be concluded that this process observed during the high incubation temperature may be related to a protective strategy and thus contributes to postnatal heat adaptation. ©2008 Poultry Science Association Inc.en_US
dc.description.sponsorshipTürkiye Bilimsel ve Teknolojik Araştirma Kurumu: 155 O 044 Firat University Scientific Research Projects Management Unit: 2005 ZRF 039en_US
dc.description.sponsorshipThis research was supported by Türkiye Bilimsel ve Teknolojik Aras¸tırma Kurumu (project no. 155 O 044) and Ege University Scientific Research Projects (project no. 2005 ZRF 039). Veerle Bruggeman is a postdoctoral fellow of the Fonds Wetenschappelijk Onderzoek-Vlaanderen (Belgium). --en_US
dc.identifier.doi10.3382/ps.2007-00436en_US
dc.identifier.endpage1236en_US
dc.identifier.issn0032-5791
dc.identifier.issue6en_US
dc.identifier.pmid18493015en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage1229en_US
dc.identifier.urihttps://doi.org/10.3382/ps.2007-00436
dc.identifier.urihttps://hdl.handle.net/11454/21043
dc.identifier.volume87en_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.relation.ispartofPoultry Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectEmbryo compositionen_US
dc.subjectHeat acclimationen_US
dc.subjectHeat stressen_US
dc.subjectParental ageen_US
dc.subjectYolk sac compositionen_US
dc.titleAcclimation to heat during incubation. 2. Embryo composition and residual egg yolk sac fatty acid profiles in chicksen_US
dc.typeArticleen_US

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