Limestone and oyster shell for brown layers in their second egg production cycle
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-635X2011000200004 http://hdl.handle.net/11449/4097 |
Resumo: | This study aimed at evaluating the effect of dietary calcium levels and the replacement of calcium sources with different particle size compositions on the performance and egg quality of brown layers in their second egg production cycle. A randomized block experimental design was applied with 12 treatments in a 3x4 factorial arrangement: three calcium levels (2.6, 3.2, 3.8 %) and four combinations of calcium sources (1- 100% fine limestone (FL), 2- 50% FL + 50% coarse limestone (CL), 3- 50% FL and 50% oyster shell (OS), 4- 50% FL and 25% CL+ 25 %OS), with six replicates of eight birds each. Calcium sources were analyzed for geometric mean diameter (GMD) and in-vitro solubility. The following performance and egg quality parameters were evaluated: egg weight (EW, g), egg production (% Eggs), egg mass (EM %), feed intake (FI g), feed conversion ratio (FCR kg/dz and FCR kg/kg), mortality (% Mort.), specific egg gravity (SG), percentages of yolk (Y%), albumen (Alb%) and eggshell (ES%), eggshell thickness (EST), eggshell breaking strength (BS), eggshell weight per surface area (EWSA), Haugh unit (HU), yolk index (YI) and yolk color. Performance and internal egg quality were not affected by the treatments (p>0.05). Blocks had a significant effect on (p<0.05) FI and FCR (kg/dz and kg/kg). Treatments significantly influenced external egg quality, which improved as dietary calcium levels increases and when up to 50% fine limestone was replaced by combinations of coarse limestone with oyster shell. |
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Limestone and oyster shell for brown layers in their second egg production cycleEgg qualitylevelsMineralsparticle sizePerformancesourcesThis study aimed at evaluating the effect of dietary calcium levels and the replacement of calcium sources with different particle size compositions on the performance and egg quality of brown layers in their second egg production cycle. A randomized block experimental design was applied with 12 treatments in a 3x4 factorial arrangement: three calcium levels (2.6, 3.2, 3.8 %) and four combinations of calcium sources (1- 100% fine limestone (FL), 2- 50% FL + 50% coarse limestone (CL), 3- 50% FL and 50% oyster shell (OS), 4- 50% FL and 25% CL+ 25 %OS), with six replicates of eight birds each. Calcium sources were analyzed for geometric mean diameter (GMD) and in-vitro solubility. The following performance and egg quality parameters were evaluated: egg weight (EW, g), egg production (% Eggs), egg mass (EM %), feed intake (FI g), feed conversion ratio (FCR kg/dz and FCR kg/kg), mortality (% Mort.), specific egg gravity (SG), percentages of yolk (Y%), albumen (Alb%) and eggshell (ES%), eggshell thickness (EST), eggshell breaking strength (BS), eggshell weight per surface area (EWSA), Haugh unit (HU), yolk index (YI) and yolk color. Performance and internal egg quality were not affected by the treatments (p>0.05). Blocks had a significant effect on (p<0.05) FI and FCR (kg/dz and kg/kg). Treatments significantly influenced external egg quality, which improved as dietary calcium levels increases and when up to 50% fine limestone was replaced by combinations of coarse limestone with oyster shell.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)APTA RegionalUNESP FCAV Department of TechnologyUNESP FCAV Department of TechnologyFundação APINCO de Ciência e Tecnologia AvícolasAgência Paulista de Tecnologia dos Agronegócios (APTA)Universidade Estadual Paulista (Unesp)Pizzolante, CCKakimoto, SKSaldanha, ESPBLaganá, CSouza, HBA [UNESP]Moraes, JE2014-05-20T13:17:44Z2014-05-20T13:17:44Z2011-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article103-111application/pdfhttp://dx.doi.org/10.1590/S1516-635X2011000200004Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 13, n. 2, p. 103-111, 2011.1516-635Xhttp://hdl.handle.net/11449/409710.1590/S1516-635X2011000200004S1516-635X2011000200004WOS:000295250500004S1516-635X2011000200004.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência Avícola0.463info:eu-repo/semantics/openAccess2024-06-07T15:31:33Zoai:repositorio.unesp.br:11449/4097Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:05:08.783355Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Limestone and oyster shell for brown layers in their second egg production cycle |
title |
Limestone and oyster shell for brown layers in their second egg production cycle |
spellingShingle |
Limestone and oyster shell for brown layers in their second egg production cycle Pizzolante, CC Egg quality levels Minerals particle size Performance sources |
title_short |
Limestone and oyster shell for brown layers in their second egg production cycle |
title_full |
Limestone and oyster shell for brown layers in their second egg production cycle |
title_fullStr |
Limestone and oyster shell for brown layers in their second egg production cycle |
title_full_unstemmed |
Limestone and oyster shell for brown layers in their second egg production cycle |
title_sort |
Limestone and oyster shell for brown layers in their second egg production cycle |
author |
Pizzolante, CC |
author_facet |
Pizzolante, CC Kakimoto, SK Saldanha, ESPB Laganá, C Souza, HBA [UNESP] Moraes, JE |
author_role |
author |
author2 |
Kakimoto, SK Saldanha, ESPB Laganá, C Souza, HBA [UNESP] Moraes, JE |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Agência Paulista de Tecnologia dos Agronegócios (APTA) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pizzolante, CC Kakimoto, SK Saldanha, ESPB Laganá, C Souza, HBA [UNESP] Moraes, JE |
dc.subject.por.fl_str_mv |
Egg quality levels Minerals particle size Performance sources |
topic |
Egg quality levels Minerals particle size Performance sources |
description |
This study aimed at evaluating the effect of dietary calcium levels and the replacement of calcium sources with different particle size compositions on the performance and egg quality of brown layers in their second egg production cycle. A randomized block experimental design was applied with 12 treatments in a 3x4 factorial arrangement: three calcium levels (2.6, 3.2, 3.8 %) and four combinations of calcium sources (1- 100% fine limestone (FL), 2- 50% FL + 50% coarse limestone (CL), 3- 50% FL and 50% oyster shell (OS), 4- 50% FL and 25% CL+ 25 %OS), with six replicates of eight birds each. Calcium sources were analyzed for geometric mean diameter (GMD) and in-vitro solubility. The following performance and egg quality parameters were evaluated: egg weight (EW, g), egg production (% Eggs), egg mass (EM %), feed intake (FI g), feed conversion ratio (FCR kg/dz and FCR kg/kg), mortality (% Mort.), specific egg gravity (SG), percentages of yolk (Y%), albumen (Alb%) and eggshell (ES%), eggshell thickness (EST), eggshell breaking strength (BS), eggshell weight per surface area (EWSA), Haugh unit (HU), yolk index (YI) and yolk color. Performance and internal egg quality were not affected by the treatments (p>0.05). Blocks had a significant effect on (p<0.05) FI and FCR (kg/dz and kg/kg). Treatments significantly influenced external egg quality, which improved as dietary calcium levels increases and when up to 50% fine limestone was replaced by combinations of coarse limestone with oyster shell. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 2014-05-20T13:17:44Z 2014-05-20T13:17:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1516-635X2011000200004 Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 13, n. 2, p. 103-111, 2011. 1516-635X http://hdl.handle.net/11449/4097 10.1590/S1516-635X2011000200004 S1516-635X2011000200004 WOS:000295250500004 S1516-635X2011000200004.pdf |
url |
http://dx.doi.org/10.1590/S1516-635X2011000200004 http://hdl.handle.net/11449/4097 |
identifier_str_mv |
Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 13, n. 2, p. 103-111, 2011. 1516-635X 10.1590/S1516-635X2011000200004 S1516-635X2011000200004 WOS:000295250500004 S1516-635X2011000200004.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciência Avícola 0.463 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
103-111 application/pdf |
dc.publisher.none.fl_str_mv |
Fundação APINCO de Ciência e Tecnologia Avícolas |
publisher.none.fl_str_mv |
Fundação APINCO de Ciência e Tecnologia Avícolas |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128457019752448 |