Quality of egg yolks after oxycarotenoids supplementation in hens' diets

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dc.contributor.authorPonsano, Elisa Helena Giglio [UNESP]
dc.contributor.authorCosta, Alstyn Wesley Momette da [UNESP]
dc.contributor.authorGrassi, Thiago Luís Magnani [UNESP]
dc.contributor.authorCintra, Luiz Fernando Corona [UNESP]
dc.contributor.authorMoraes, Olívia Campos de [UNESP]
dc.contributor.authorGarcia Neto, Manoel [UNESP]
dc.contributor.authorPinto, Marcos Franke [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2016-01-28T16:53:24Z
dc.date.available2016-01-28T16:53:24Z
dc.date.issued2013
dc.description.abstractOxycarotenoids concentration in layer hens’ feed may be increased whenever the consumer market demands for more pigmented egg yolks. Oxycarotenoids present in Rubrivivax gelatinosus biomass grown in industrial wastewater have already proved their ability on enhancing yolk color. Moreover, there is a current interest on the antioxidant properties that some carotenoids may provide to food and health. So, in this experiment, we investigated the effects of oxycarotenoids supplementation in hens´ diets on yolk composition and stability to rancidity. Hy line hens aging 19 weeks were individually housed in wire cages equipped with feeders and drinkers. After 15 days receiving a corn basal diet nutritionally balanced, they were assigned to four different treatments, with six replicates, that lasted for 28 days: T1 – basal diet (control), T2 – basal diet + 1.5 mg/kg canthaxanthin, T3 – basal diet + 4.5 g/kg freeze dried R. gelatinosus biomass and T4 - basal diet + 4.5 g/kg spray dried R. gelatinosus biomass. Eggs laid on the last 5 days of rearing were collected; the yolks were separated, analyzed for pH and then freeze dried for the further analyses. Proximate composition was determined after drying and the rancidity (TBRAS method) was investigated at 0, 30 and 60 days of storage at room temperature/dark conditions. Yolks that received the oxycarotenoids had the lowest moisture content and the highest protein contents (P < 0.05). Lipids and pH were the same for all treatments (P > 0.05) and ashes only were higher for T2 (P < 0.05). All treatments that received oxycarotenoids had lower TBARS than control group and, among them, oxycarotenoids from spray dried R. gelatinosus biomass were the most effective to prevent rancidity (P < 0.05). So, we concluded that the use of R. gelatinosus biomass in hens feed brings positive effects to the yolk quality, since protein content is increased and conservation is increased due to decreased water content and lipid oxidation.en
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Medicina Veterinária de Araçatuba (FMVA), Departamento de Apoio, Produção e Saúde Animal, Rua Clóvis Pestana, 793, Jd. Dona Amélia, CEP 16050680, Araçatuba, SP, Brasil
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Medicina Veterinária de Araçatuba (FMVA), Departamento de Apoio, Produção e Saúde Animal, Rua Clóvis Pestana, 793, Jd. Dona Amélia, CEP 16050680, Araçatuba, SP, Brasil
dc.format.extent242-242
dc.identifierhttp://www.poultryscience.org/psa13/abstracts/toc.htm
dc.identifier.citationPoultry Science, v. 92, n. E-suppl.1, p. 242-242, 2013.
dc.identifier.issn1525-3171
dc.identifier.lattes9501017500294164
dc.identifier.lattes7357560220449194
dc.identifier.lattes4022227218734910
dc.identifier.urihttp://hdl.handle.net/11449/133054
dc.language.isoeng
dc.relation.ispartofPoultry Science
dc.rights.accessRightsAcesso restrito
dc.sourceCurrículo Lattes
dc.subjectRubrivivax gelatinosusen
dc.subjectBiomassen
dc.subjectProximate compositionen
dc.subjectLipid oxidationen
dc.subjectpHen
dc.titleQuality of egg yolks after oxycarotenoids supplementation in hens' dietsen
dc.typeArtigo
unesp.author.lattes9501017500294164
unesp.author.lattes7357560220449194
unesp.author.lattes4022227218734910
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária, Araçatubapt
unesp.departmentApoio, Produção e Saúde Animalpt

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