Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens
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/S1516-635X2011000100005 http://hdl.handle.net/11449/14224 |
Resumo: | A total of 405 23-week-old ISA® Brown layers were distributed in a completely randomized experimental design in a factorial arrangement with nine treatments consisting of three dietary calcium levels (3.5, 3.75, and 4.5%) and three limestone particle sizes (100% fine limestone (FL), 70% FL + 30% coarse limestone (CL) and 50% (FL) + 50% (CL)), with nine replicates of five birds per cage. The following parameters were evaluated: percentage of lay, defective eggs, egg weight, egg mass, feed intake, feed conversion ratio (per kg eggs and per dozen eggs), and mortality. Dietary Ca levels significantly affected lay, with birds fed diets containing 4.5% calcium producing less eggs as compared to those fed 3.0 and 3.75% Ca. Egg production linearly decreased as dietary Ca levels increased, but blood Ca levels (mg/L) increased in 28-week-old birds. The interaction of dietary Ca levels and limestone particle sizes resulted in a reduction in tibial ash Ca content as dietary Ca levels increased and as fine limestone was replaced by coarse limestone. It is concluded that a dietary Ca level of 3.75% and 100% fine particle limestone are required to maintain adequate egg production and available Ca blood level. |
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Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hensEgg productionmineral nutritionmineral particle sizeA total of 405 23-week-old ISA® Brown layers were distributed in a completely randomized experimental design in a factorial arrangement with nine treatments consisting of three dietary calcium levels (3.5, 3.75, and 4.5%) and three limestone particle sizes (100% fine limestone (FL), 70% FL + 30% coarse limestone (CL) and 50% (FL) + 50% (CL)), with nine replicates of five birds per cage. The following parameters were evaluated: percentage of lay, defective eggs, egg weight, egg mass, feed intake, feed conversion ratio (per kg eggs and per dozen eggs), and mortality. Dietary Ca levels significantly affected lay, with birds fed diets containing 4.5% calcium producing less eggs as compared to those fed 3.0 and 3.75% Ca. Egg production linearly decreased as dietary Ca levels increased, but blood Ca levels (mg/L) increased in 28-week-old birds. The interaction of dietary Ca levels and limestone particle sizes resulted in a reduction in tibial ash Ca content as dietary Ca levels increased and as fine limestone was replaced by coarse limestone. It is concluded that a dietary Ca level of 3.75% and 100% fine particle limestone are required to maintain adequate egg production and available Ca blood level.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade José do Rosário Vellano School of Agriculture and Animals Science Department of Animal ScienceUNESP FMVZ Department of Animal ProductionUniversidade do Trás-os-Montes and Alto Douro Dept. of Animal SciencesUNESP FMVZ Post-Graduation Program in Animal ScienceUNESP FMVZ Department of Animal ProductionUNESP FMVZ Post-Graduation Program in Animal ScienceFundação APINCO de Ciência e Tecnologia AvícolasUniversidade José do Rosário VellanoUniversidade Estadual Paulista (Unesp)Universidade do Trás-os-Montes and Alto DouroPelicia, KMourao, JLMGarcia, Edivaldo Antonio [UNESP]Pinheiro, VMCBerto, da [UNESP]Molino, AB [UNESP]Faitarone, ABG [UNESP]Vercese, F [UNESP]Santos, GCSilva, AP [UNESP]2013-09-30T19:25:42Z2014-05-20T13:41:00Z2013-09-30T19:25:42Z2014-05-20T13:41:00Z2011-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article29-34application/pdfhttp://dx.doi.org/10.1590/S1516-635X2011000100005Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 13, n. 1, p. 29-34, 2011.1516-635Xhttp://hdl.handle.net/11449/1422410.1590/S1516-635X2011000100005S1516-635X2011000100005WOS:000289703900005S1516-635X2011000100005.pdf67435913471067277728883010098049SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência Avícola0.463info:eu-repo/semantics/openAccess2024-09-09T13:01:23Zoai:repositorio.unesp.br:11449/14224Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-09T13:01:23Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
title |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
spellingShingle |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens Pelicia, K Egg production mineral nutrition mineral particle size |
title_short |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
title_full |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
title_fullStr |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
title_full_unstemmed |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
title_sort |
Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens |
author |
Pelicia, K |
author_facet |
Pelicia, K Mourao, JLM Garcia, Edivaldo Antonio [UNESP] Pinheiro, VMC Berto, da [UNESP] Molino, AB [UNESP] Faitarone, ABG [UNESP] Vercese, F [UNESP] Santos, GC Silva, AP [UNESP] |
author_role |
author |
author2 |
Mourao, JLM Garcia, Edivaldo Antonio [UNESP] Pinheiro, VMC Berto, da [UNESP] Molino, AB [UNESP] Faitarone, ABG [UNESP] Vercese, F [UNESP] Santos, GC Silva, AP [UNESP] |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade José do Rosário Vellano Universidade Estadual Paulista (Unesp) Universidade do Trás-os-Montes and Alto Douro |
dc.contributor.author.fl_str_mv |
Pelicia, K Mourao, JLM Garcia, Edivaldo Antonio [UNESP] Pinheiro, VMC Berto, da [UNESP] Molino, AB [UNESP] Faitarone, ABG [UNESP] Vercese, F [UNESP] Santos, GC Silva, AP [UNESP] |
dc.subject.por.fl_str_mv |
Egg production mineral nutrition mineral particle size |
topic |
Egg production mineral nutrition mineral particle size |
description |
A total of 405 23-week-old ISA® Brown layers were distributed in a completely randomized experimental design in a factorial arrangement with nine treatments consisting of three dietary calcium levels (3.5, 3.75, and 4.5%) and three limestone particle sizes (100% fine limestone (FL), 70% FL + 30% coarse limestone (CL) and 50% (FL) + 50% (CL)), with nine replicates of five birds per cage. The following parameters were evaluated: percentage of lay, defective eggs, egg weight, egg mass, feed intake, feed conversion ratio (per kg eggs and per dozen eggs), and mortality. Dietary Ca levels significantly affected lay, with birds fed diets containing 4.5% calcium producing less eggs as compared to those fed 3.0 and 3.75% Ca. Egg production linearly decreased as dietary Ca levels increased, but blood Ca levels (mg/L) increased in 28-week-old birds. The interaction of dietary Ca levels and limestone particle sizes resulted in a reduction in tibial ash Ca content as dietary Ca levels increased and as fine limestone was replaced by coarse limestone. It is concluded that a dietary Ca level of 3.75% and 100% fine particle limestone are required to maintain adequate egg production and available Ca blood level. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-03-01 2013-09-30T19:25:42Z 2013-09-30T19:25:42Z 2014-05-20T13:41:00Z 2014-05-20T13:41:00Z |
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/S1516-635X2011000100005 Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 13, n. 1, p. 29-34, 2011. 1516-635X http://hdl.handle.net/11449/14224 10.1590/S1516-635X2011000100005 S1516-635X2011000100005 WOS:000289703900005 S1516-635X2011000100005.pdf 6743591347106727 7728883010098049 |
url |
http://dx.doi.org/10.1590/S1516-635X2011000100005 http://hdl.handle.net/11449/14224 |
identifier_str_mv |
Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 13, n. 1, p. 29-34, 2011. 1516-635X 10.1590/S1516-635X2011000100005 S1516-635X2011000100005 WOS:000289703900005 S1516-635X2011000100005.pdf 6743591347106727 7728883010098049 |
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 |
29-34 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 |
repositoriounesp@unesp.br |
_version_ |
1810021333409464320 |