Correlations between thermal environment and egg quality of two layer commercial strains

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dc.contributor.authorPereira, Danilo Florentino [UNESP]
dc.contributor.authorVitorasso, G [UNESP]
dc.contributor.authorOliveira, SC [UNESP]
dc.contributor.authorKakimoto, SK
dc.contributor.authorTogashi, CK
dc.contributor.authorSoares, NM
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)
dc.date.accessioned2014-05-20T13:12:14Z
dc.date.available2014-05-20T13:12:14Z
dc.date.issued2008-06-01
dc.description.abstractHeat stress limits the productivity of laying hens, as reflected by egg production and egg quality. The present study aimed at showing the correlations between egg quality parameters and environmental variables recorded on the day eggs were laid and on the previous days. Birds were housed in battery cages in a commercial poultry house. Main component analyses were used to verify associations between environmental and production variables, and Pearson's linear correlation tests were used to further investigate those associations. Analyses were carried out separately for to layer strains, Dekalb® White and Hy-Line® w36, and the variables egg weight (g), eggshell weight (g), specific gravity (g/cm³) and eggshell percentage (%) were compared with the environmental variables of the same day of the production, and one, two, three, and four days before egg production. Sound intensity measured inside the houses was positively associated with the quality parameters of eggs produced on the next day. Thermal environmental variables affected the egg quality differently in each strain, particularly air temperature, internal roof tile temperature, relative humidity, and air velocity. Ammonia concentration measured inside the houses was lower than 1ppm, and did not affect production performance.en
dc.description.affiliationUNESP Faculdade de Administração de Empresas e Agronegócios
dc.description.affiliationAPTA Alta Paulista
dc.description.affiliationAPTA IB CAPTAA
dc.description.affiliationUnespUNESP Faculdade de Administração de Empresas e Agronegócios
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 06/51926-7
dc.description.sponsorshipIdCNPq: 476397/20
dc.description.sponsorshipIdFAPESP: 08/09582-4
dc.format.extent81-88
dc.identifierhttp://dx.doi.org/10.1590/S1516-635X2008000200002
dc.identifier.citationRevista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 10, n. 2, p. 81-88, 2008.
dc.identifier.doi10.1590/S1516-635X2008000200002
dc.identifier.fileS1516-635X2008000200002.pdf
dc.identifier.issn1516-635X
dc.identifier.scieloS1516-635X2008000200002
dc.identifier.urihttp://hdl.handle.net/11449/230
dc.identifier.wosWOS:000259783200002
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.subjectCageen
dc.subjectegg qualityen
dc.subjectenvironmenten
dc.subjectlayeren
dc.subjectpoultry houseen
dc.titleCorrelations between thermal environment and egg quality of two layer commercial strainsen
dc.typeArtigo
unesp.author.orcid0000-0003-4602-8837[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Engenharia, Tupãpt

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