Incubator environment interacts with genetic line of broiler at the plateau stage to affect embryo plasma thyroxine and triiodothyronine concentrations

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dc.contributor.authorWineland M.J.
dc.contributor.authorChristensen V.L.
dc.contributor.authorYildrum I.
dc.contributor.authorFairchild B.D.
dc.contributor.authorOrt D.T.
dc.contributor.authorMann K.M.
dc.date.accessioned2020-03-26T17:05:22Z
dc.date.available2020-03-26T17:05:22Z
dc.date.issued2006
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractWe hypothesize that temperature and oxygen in conjunction with genetic lines of broilers regulate embryo thyroid function. Thyroid response of broiler embryos of the two lines was measured at different incubator temperature and oxygen concentrations at the plateau stage in oxygen consumption (days 17 to 20 of embryo development). Each of the lines showed different eggshell conductance (G) values. Eggs of the same weight from the lines of broilers were incubated identically until the 17th day of development. On the 17th day (plateau stage in oxygen consumption), eggs were randomly distributed by line into four incubators operating at 36, 37, 38 or 39°C in trial 1 or at 17, 19, 21 or 23% oxygen in trial 2. At external pipping (the end of the plateau stage in oxygen consumption) as well as at hatching ten embryos or chicks per treatment were sampled for blood plasma. Plasma was analyzed for thyroxine and triiodothyronine concentrations. In trial 3, temperature line of broiler and oxygen treatments were arranged factorially. Increasing temperatures suppressed hormone concentrations in embryos, and the suppression was greater with low G. Increasing oxygen increased hormone concentrations in low G embryos to a greater degree than high G. It can be concluded that incubation temperature suppresses plasma thyroid hormone concentrations in low G lines whereas oxygen increases it. © Asian Network for Scientific Information, 2006.en_US
dc.identifier.doi10.3923/ijps.2006.714.722en_US
dc.identifier.endpage722en_US
dc.identifier.issn1682-8356en_US
dc.identifier.issue8en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage714en_US
dc.identifier.urihttps://dx.doi.org/10.3923/ijps.2006.714.722
dc.identifier.urihttps://hdl.handle.net/20.500.12395/20889
dc.identifier.volume5en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofInternational Journal of Poultry Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectPlasmaen_US
dc.subjectPlateau stageen_US
dc.subjectThyroid functionen_US
dc.titleIncubator environment interacts with genetic line of broiler at the plateau stage to affect embryo plasma thyroxine and triiodothyronine concentrationsen_US
dc.typeArticleen_US

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