Effects of dietary clinoptilolite and calcium levels on the performance and egg quality of commercial layers

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dc.contributor.authorBerto, Dirlei Antonio [UNESP]
dc.contributor.authorGarcia, Edivaldo Antonio [UNESP]
dc.contributor.authorPelícia, K.
dc.contributor.authorVercese, F. [UNESP]
dc.contributor.authorMolino, A. B. [UNESP]
dc.contributor.authorda Silveira, A. F. [UNESP]
dc.contributor.authorVieira Filho, J. A. [UNESP]
dc.contributor.authorMurakami, E. S F [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUNIFENAS
dc.date.accessioned2014-05-27T11:30:51Z
dc.date.available2014-05-27T11:30:51Z
dc.date.issued2013-10-10
dc.description.abstractAmong the different feed additives studied in poultry production, clinoptilolite, an aluminosilicate capable of adsorbing harmful substances and of improving live performance and egg and meat quality, was evaluated. The objective of the present study was to evaluate the influence of dietary clinoptilolite and calcium levels on the performance and egg quality of layers. In total, 576 layers were distributed according to a completely randomized experimental design in a 3 x 4 factorial arrangement (three calcium levels - 2.5, 3.1, or 3.7% and four clinoptilolite levels - 0.0, 0.15, 0.25, or 0.50%), with 12 treatments of six replicates of eight birds each. The experiment included four 28-d cycles. The experimental diets were based on corn and soybean meal. Results were submitted to analysis of variance and means were compared by the test of Tukey at 5% significance level using SISVAR statistical package. There was a significant interaction between the evaluated factors for egg production and feed conversion ratio per dozen eggs and egg mass. The lowest calcium level resulted in worse performance and eggshell quality. Clinoptilolite levels affected albumen and yolk content. It was concluded that up to 0.50% inclusion of clinoptilolite in layer diets does not benefit layer performance or eggshell quality. Although the inclusion of only 2.5% calcium in layer diets is not recommended, it is possible to add 3.1% because it promoted similar results as the recommended level of 3.7%.en
dc.description.affiliationFMVZ UNESP-Botucatu
dc.description.affiliationDepartment of Animal Production FMVZ Unesp-Botucatu
dc.description.affiliationDepartment of Animal Science UNIFENAS, Alfenas, MG
dc.description.affiliationAnimal Science FMVZ UNESP-Botucatu
dc.description.affiliationUnespFMVZ UNESP-Botucatu
dc.description.affiliationUnespDepartment of Animal Production FMVZ Unesp-Botucatu
dc.description.affiliationUnespAnimal Science FMVZ UNESP-Botucatu
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent263-268
dc.identifierhttp://dx.doi.org/10.1590/S1516-635X2013000300014
dc.identifier.citationRevista Brasileira de Ciencia Avicola, v. 15, n. 3, p. 263-268, 2013.
dc.identifier.doi10.1590/S1516-635X2013000300014
dc.identifier.file2-s2.0-84885052109.pdf
dc.identifier.issn1516-635X
dc.identifier.lattes7728883010098049
dc.identifier.lattes6743591347106727
dc.identifier.scieloS1516-635X2013000300014
dc.identifier.scopus2-s2.0-84885052109
dc.identifier.urihttp://hdl.handle.net/11449/76828
dc.identifier.wosWOS:000326811700014
dc.language.isoeng
dc.relation.ispartofRevista Brasileira de Ciência Avícola
dc.relation.ispartofjcr0.463
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAmmonia adsorption
dc.subjectCalcium metabolism
dc.subjectZeolites
dc.titleEffects of dietary clinoptilolite and calcium levels on the performance and egg quality of commercial layersen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbca/iaboutj.htm#03
unesp.author.lattes7728883010098049
unesp.author.lattes6743591347106727
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt

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