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dc.contributor.authorPizzolante, CC-
dc.contributor.authorGarcia, Edivaldo Antonio-
dc.contributor.authorLaganá, C-
dc.contributor.authorSaldanha, ESPB-
dc.contributor.authorDeodato, AP-
dc.contributor.authorFaitarone, ABG-
dc.contributor.authorScherer, MR-
dc.contributor.authorBatista, L-
dc.identifier.citationRevista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 8, n. 3, p. 173-176, 2006.-
dc.description.abstractAn experiment was carried out at the Research and Development Unit of Brotas aiming at evaluating dietary calcium level and limestone particle size on the production performance of commercial (Hy-Line Brown) layers in the second lay cycle. Experiment duration was 112 days. A total number of 288 hens, with 83 weeks of age in the beginning of the experiment, were used in a completely randomized experimental design in a factorial arrangement of 2x3, with two calcium levels (3.5 and 4.0%) and three limestone particle size compositions: 100% fine limestone (FL), 30% coarse limestone (CL) + 70% fine limestone (FL), and 50% (CL) + 50% (FL), with six replicates of eight birds each. Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion ratio (kg/dz and kg/kg), mortality (%), and egg loss (%) were evaluated. The analysis of variance did not detect significant differences (p>0.05) among treatments on any of the evaluated performance parameters. It was concluded that the tested calcium levels and limestone particle composition did not influence the performance of semi-heavy layers in second production cycle.en
dc.publisherFundação APINCO de Ciência e Tecnologia Avícolas-
dc.subjectlaying hensen
dc.subjectparticle sizeen
dc.titleEffect of the calcium level and limestone particle size on the performance of semi-heavy layers in the second cycle of egg productionen
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationSAA DDD APTA-
dc.description.affiliationUnesp-Botucatu Faculdade de Medicina Veterinária e Zootecnia Departament of Animal Science-
dc.description.affiliationUnesp-Botucatu School of Veterinary Medicine and Animal Science-
dc.description.affiliationUnespUnesp-Botucatu Faculdade de Medicina Veterinária e Zootecnia Departament of Animal Science-
dc.description.affiliationUnespUnesp-Botucatu School of Veterinary Medicine and Animal Science-
dc.rights.accessRightsAcesso aberto-
dc.relation.ispartofRevista Brasileira de Ciência Avícola-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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