Mortality, production and quality of eggs of different rearing systems

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dc.contributor.authorTavares, Bartira de O. [UNESP]
dc.contributor.authorPereira, Danilo F. [UNESP]
dc.contributor.authorSalgado, Douglas D'Alessandro [UNESP]
dc.contributor.authorMac-Lean, Priscilla A. Bustos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:38:15Z
dc.date.available2018-12-11T17:38:15Z
dc.date.issued2018-07-01
dc.description.abstractThe conventional production of eggs in cage systems is intense and compromises the laying hens welfare. More demanding consumer markets have been pushing to abolish the use of cages and thus provide better welfare in poultry laying. This research evaluated the mortality, production, and egg quality of two alternative production systems (free-range and organic free range free-range) and compared them with the conventional system. The research was carried out in two commercial poultry farms and the variables egg weight, shell egg resistance, Haugh unit, mortality and production were recorded during eight months. The results showed that the conventional system presented better production, lower mortality and better shell egg quality. The alternative systems had better internal egg quality. Alternative systems had greater variability in outcomes and problems with disease control, which indicate greater difficulty for proper management.en
dc.description.affiliationUniversidade Estadual Paulista
dc.description.affiliationSão Paulo State University (UNESP) School of Sciences and Engineering
dc.description.affiliationUnespUniversidade Estadual Paulista
dc.description.affiliationUnespSão Paulo State University (UNESP) School of Sciences and Engineering
dc.format.extent478-485
dc.identifierhttp://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n4p478-485/2018
dc.identifier.citationEngenharia Agricola, v. 38, n. 4, p. 478-485, 2018.
dc.identifier.doi10.1590/1809-4430-Eng.Agric.v38n4p478-485/2018
dc.identifier.fileS0100-69162018000400478.pdf
dc.identifier.issn1808-4389
dc.identifier.issn0100-6916
dc.identifier.scieloS0100-69162018000400478
dc.identifier.scopus2-s2.0-85052090890
dc.identifier.urihttp://hdl.handle.net/11449/180121
dc.language.isoeng
dc.relation.ispartofEngenharia Agricola
dc.relation.ispartofsjr0,305
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAlternative egg production
dc.subjectAnimal welfare
dc.subjectPoultry egg farming
dc.subjectQuality of eggs
dc.titleMortality, production and quality of eggs of different rearing systemsen
dc.typeArtigo
unesp.departmentAdministração - Tupãpt

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