Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh

dc.contributor.authorGualhanone, A. [UNESP]
dc.contributor.authorFurlan, Renato Luis [UNESP]
dc.contributor.authorFernandez-Alarcon, M. F.
dc.contributor.authorMacari, Marcos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:15:42Z
dc.date.available2014-05-20T13:15:42Z
dc.date.issued2012-03-01
dc.description.abstractTwo experiments were carried out to study the effect of breeder age on incubation parameters (hatchability, eggshell thickness, egg surface temperature and chick weight). In Exp. 1, fertile eggs (30- and 60-wk-old breeders) were incubated at three different temperatures (36.8, 37.8 and 38.8 ºC). Eggshell surface temperature was measured by attaching a thermocouple to the shell and data were collected in a datalogger every ten minutes. This study was conducted according to a 3 x 2 factorial design (three temperatures and two breeder ages). Data revealed that eggshell surface temperature changed according to incubation temperature, with the main increase occurring between 10 and 13 days of incubation, and that the maximum increase in eggshell surface temperature was not higher than +0.6 ºC, irrespective of incubator temperature. The incubator temperature affected total incubation period and hatchability (%) at 38.8 ºC, independent of breeder age. Heavier eggs resulted in heavier chicks, irrespective of incubator temperature. In Exp 2, the eggs (30- and 60-wk-old breeders) were incubated at 37.8 ºC and eggs characteristics (weight, specific gravity, total hatchability and chicks weight) were evaluated according to a randomized experimental design. The data showed that breeder age affected eggshell thickness and chick weight (heavier eggs resulted in heavier chicks), but not specific gravity, eggshell surface temperature or hatchability. The findings of this study revealed that hatchability can be influenced by incubation temperature, but not by the breeder age. Breeder age can affect eggshell thickness, egg weight and eggshell surface temperature, but not specific gravity.en
dc.description.affiliationUNESP Faculdade de Ciências Agrárias e Veterinárias Departamento de Morfologia e Fisiologia Animal
dc.description.affiliationUnespUNESP Faculdade de Ciências Agrárias e Veterinárias Departamento de Morfologia e Fisiologia Animal
dc.identifierhttp://dx.doi.org/10.1590/S1516-635X2012000100002
dc.identifier.citationRevista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 14, n. 1, p. 09-14, 2012.
dc.identifier.doi10.1590/S1516-635X2012000100002
dc.identifier.fileS1516-635X2012000100002.pdf
dc.identifier.issn1516-635X
dc.identifier.lattes5713558572926669
dc.identifier.lattes0806409484159642
dc.identifier.orcid0000-0001-9549-0329
dc.identifier.scieloS1516-635X2012000100002
dc.identifier.urihttp://hdl.handle.net/11449/2775
dc.identifier.wosWOS:000304723800002
dc.language.isoeng
dc.publisherFundação APINCO de Ciência e Tecnologia Avícolas
dc.relation.ispartofRevista Brasileira de Ciência Avícola
dc.relation.ispartofjcr0.463
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectBroiler breederen
dc.subjectDevelopmenten
dc.subjectEmbryoen
dc.subjectTemperatureen
dc.subjectIncubationen
dc.titleEffect of breeder age on eggshell thickness, surface temperature, hatchability and chick weighen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbca/paboutj.htm
unesp.author.lattes5713558572926669
unesp.author.lattes0806409484159642[2]
unesp.author.orcid0000-0002-6850-7145[4]
unesp.author.orcid0000-0001-9549-0329[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentMorfologia e Fisiologia Animal - FCAVpt

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