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dc.contributor.authorPereira, Danilo Florentino [UNESP]
dc.contributor.authordo Vale, M. M.
dc.contributor.authorZevolli, B. R. [UNESP]
dc.contributor.authorSalgado, D. D.
dc.date.accessioned2014-05-20T13:12:15Z
dc.date.available2014-05-20T13:12:15Z
dc.date.issued2010-10-01
dc.identifierhttp://dx.doi.org/10.1590/S1516-635X2010000400008
dc.identifier.citationBrazilian Journal of Poultry Science. Campinas: Facta-fundacio Arnco Ciência Tecnologia Avicolas, v. 12, n. 4, p. 265-271, 2010.
dc.identifier.issn1516-635X
dc.identifier.urihttp://hdl.handle.net/11449/239
dc.description.abstractLayer mortality due to heat stress is an important economic loss for the producer. The aim of this study was to determine the mortality pattern of layers reared in the region of Bastos, SP, Brazil, according to external environment and bird age. Data mining technique were used based on monthly mortality records of hens in production, 135 poultry houses, from January 2004 to August 2008. The external environment was characterized according maximum and minimum temperatures, obtained monthly at the meteorological station CATI in the city of Tupa, SP, Brazil. Mortality was classified as normal (<= 1.2%) or high (> 1.2%), considering the mortality limits mentioned in literature. Data mining technique produced a decision tree with nine levels and 23 leaves, with 62.6% of overall accuracy. The hit rate for the High class was 64.1% and 59.9% for Normal class. The decision tree allowed finding a pattern in the mortality data, generating a model for estimating mortality based on the thermal environment and bird age.en
dc.description.sponsorshipAssociation of Farmers of Bastos
dc.format.extent265-271
dc.language.isoeng
dc.publisherFacta-fundacio Arnco Ciência Tecnologia Avicolas
dc.relation.ispartofBrazilian Journal of Poultry Science
dc.sourceWeb of Science
dc.subjectData miningen
dc.subjectlayer productionen
dc.subjectmortalityen
dc.subjectthermal comforten
dc.titleEstimating mortality in laying hens as the environmental temperature increasesen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbca/paboutj.htm
dcterms.rightsHolderFacta-fundacio Arnco Ciência Tecnologia Avicolas
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Santa Maria (UFSM)
dc.contributor.institutionPontificia Univ Catolica
dc.description.affiliationUniv Estadual Paulista, UNESP, BR-17602496 Tupa, SP, Brazil
dc.description.affiliationUniversidade Federal de Santa Maria (UFSM) RS, Dept Zootecnia, UFSM, Santa Maria, RS, Brazil
dc.description.affiliationPontificia Univ Catolica, Dep Matemat, Campinas, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, BR-17602496 Tupa, SP, Brazil
dc.identifier.scieloS1516-635X2010000400008
dc.identifier.wosWOS:000287072600008
dc.rights.accessRightsAcesso aberto
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Engenharia, Tupãpt
dc.identifier.fileS1516-635X2010000400008-en.pdf
unesp.author.orcid0000-0003-4602-8837[1]
dc.relation.ispartofjcr0.463
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