Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-635X2009000400005 http://hdl.handle.net/11449/14218 |
Resumo: | This study was carried out to evaluate the effects of dietary trace mineral levels and sources on egg quality parameters of second-cycle semi-heavy layers. A number of 360 72-week-old layers were submitted to forced molting. Upon return of lay (83 weeks of age), birds were distributed according to a completely randomized experimental design of six treatments with six replicates of 10 birds each. The control treatment consisted of 0.10% dietary supplementation of trace minerals from inorganic sources, which was proportionally replaced by five levels (110, 100, 90, 80, 70%) of an organic trace mineral supplement containing 30, 30, 40, 6, 0.61, and 0.3 g/kg product of Zn, Fe, Mn, Cu, I, and Se, respectively. All diets contained equal protein, energy, and amino acid levels. Every 28 days of the experimental period (112 days) four eggs per replicate were collected for egg quality evaluation. The following parameters were evaluated: specific gravity, yolk, albumen and eggshell percentages, yolk index, Haugh units, and eggshell thickness and breaking strength. One sample per replicate, consisting of the pool of the yolks of three eggs collected at the end of each experimental period, was used to assess protein and mineral (Ca, P, Cu, Fe, Mn, and Zn) contents. The results were submitted to ANOVA, and means to the test of Tukey at 5% significance level. The evaluated trace mineral levels and sources did not influence any of the studied egg quality parameters. It was concluded that reducing organic trace mineral supplementation in up to 70% relative to 100% inorganic trace mineral supplementation does not affect egg parameters and therefore, can be applied to the diet of semi-heavy layers in their second cycle of lay. |
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Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of layEggshell qualityforced moltingmineral supplementationyolkThis study was carried out to evaluate the effects of dietary trace mineral levels and sources on egg quality parameters of second-cycle semi-heavy layers. A number of 360 72-week-old layers were submitted to forced molting. Upon return of lay (83 weeks of age), birds were distributed according to a completely randomized experimental design of six treatments with six replicates of 10 birds each. The control treatment consisted of 0.10% dietary supplementation of trace minerals from inorganic sources, which was proportionally replaced by five levels (110, 100, 90, 80, 70%) of an organic trace mineral supplement containing 30, 30, 40, 6, 0.61, and 0.3 g/kg product of Zn, Fe, Mn, Cu, I, and Se, respectively. All diets contained equal protein, energy, and amino acid levels. Every 28 days of the experimental period (112 days) four eggs per replicate were collected for egg quality evaluation. The following parameters were evaluated: specific gravity, yolk, albumen and eggshell percentages, yolk index, Haugh units, and eggshell thickness and breaking strength. One sample per replicate, consisting of the pool of the yolks of three eggs collected at the end of each experimental period, was used to assess protein and mineral (Ca, P, Cu, Fe, Mn, and Zn) contents. The results were submitted to ANOVA, and means to the test of Tukey at 5% significance level. The evaluated trace mineral levels and sources did not influence any of the studied egg quality parameters. It was concluded that reducing organic trace mineral supplementation in up to 70% relative to 100% inorganic trace mineral supplementation does not affect egg parameters and therefore, can be applied to the diet of semi-heavy layers in their second cycle of lay.UNESP FMVZ Post-Graduation Program in Animal ProductionUNESP FMVZ Department of Animal ProductionSAA Agência Paulista de Tecnologia dos AgronegóciosTortuga Companhia Zootécnica AgráriaUNESP FMVZ Post-Graduation Program in Animal ProductionUNESP FMVZ Department of Animal ProductionFundação APINCO de Ciência e Tecnologia AvícolasUniversidade Estadual Paulista (Unesp)Agência Paulista de Tecnologia dos Agronegócios (APTA)Tortuga Companhia Zootécnica AgráriaSaldanha, ESPB [UNESP]Garcia, Edivaldo Antonio [UNESP]Pizzolante, CCFaittarone, ABG [UNESP]Sechinato, A daMolino, AB [UNESP]Laganá, C2013-09-30T19:25:36Z2014-05-20T13:40:59Z2013-09-30T19:25:36Z2014-05-20T13:40:59Z2009-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article241-247application/pdfhttp://dx.doi.org/10.1590/S1516-635X2009000400005Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 11, n. 4, p. 241-247, 2009.1516-635Xhttp://hdl.handle.net/11449/1421810.1590/S1516-635X2009000400005S1516-635X2009000400005WOS:000276475000005S1516-635X2009000400005.pdf6743591347106727SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência Avícola0.463info:eu-repo/semantics/openAccess2024-09-09T13:01:09Zoai:repositorio.unesp.br:11449/14218Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-09T13:01:09Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
title |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
spellingShingle |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay Saldanha, ESPB [UNESP] Eggshell quality forced molting mineral supplementation yolk |
title_short |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
title_full |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
title_fullStr |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
title_full_unstemmed |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
title_sort |
Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay |
author |
Saldanha, ESPB [UNESP] |
author_facet |
Saldanha, ESPB [UNESP] Garcia, Edivaldo Antonio [UNESP] Pizzolante, CC Faittarone, ABG [UNESP] Sechinato, A da Molino, AB [UNESP] Laganá, C |
author_role |
author |
author2 |
Garcia, Edivaldo Antonio [UNESP] Pizzolante, CC Faittarone, ABG [UNESP] Sechinato, A da Molino, AB [UNESP] Laganá, C |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Agência Paulista de Tecnologia dos Agronegócios (APTA) Tortuga Companhia Zootécnica Agrária |
dc.contributor.author.fl_str_mv |
Saldanha, ESPB [UNESP] Garcia, Edivaldo Antonio [UNESP] Pizzolante, CC Faittarone, ABG [UNESP] Sechinato, A da Molino, AB [UNESP] Laganá, C |
dc.subject.por.fl_str_mv |
Eggshell quality forced molting mineral supplementation yolk |
topic |
Eggshell quality forced molting mineral supplementation yolk |
description |
This study was carried out to evaluate the effects of dietary trace mineral levels and sources on egg quality parameters of second-cycle semi-heavy layers. A number of 360 72-week-old layers were submitted to forced molting. Upon return of lay (83 weeks of age), birds were distributed according to a completely randomized experimental design of six treatments with six replicates of 10 birds each. The control treatment consisted of 0.10% dietary supplementation of trace minerals from inorganic sources, which was proportionally replaced by five levels (110, 100, 90, 80, 70%) of an organic trace mineral supplement containing 30, 30, 40, 6, 0.61, and 0.3 g/kg product of Zn, Fe, Mn, Cu, I, and Se, respectively. All diets contained equal protein, energy, and amino acid levels. Every 28 days of the experimental period (112 days) four eggs per replicate were collected for egg quality evaluation. The following parameters were evaluated: specific gravity, yolk, albumen and eggshell percentages, yolk index, Haugh units, and eggshell thickness and breaking strength. One sample per replicate, consisting of the pool of the yolks of three eggs collected at the end of each experimental period, was used to assess protein and mineral (Ca, P, Cu, Fe, Mn, and Zn) contents. The results were submitted to ANOVA, and means to the test of Tukey at 5% significance level. The evaluated trace mineral levels and sources did not influence any of the studied egg quality parameters. It was concluded that reducing organic trace mineral supplementation in up to 70% relative to 100% inorganic trace mineral supplementation does not affect egg parameters and therefore, can be applied to the diet of semi-heavy layers in their second cycle of lay. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-01 2013-09-30T19:25:36Z 2013-09-30T19:25:36Z 2014-05-20T13:40:59Z 2014-05-20T13:40:59Z |
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/S1516-635X2009000400005 Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 11, n. 4, p. 241-247, 2009. 1516-635X http://hdl.handle.net/11449/14218 10.1590/S1516-635X2009000400005 S1516-635X2009000400005 WOS:000276475000005 S1516-635X2009000400005.pdf 6743591347106727 |
url |
http://dx.doi.org/10.1590/S1516-635X2009000400005 http://hdl.handle.net/11449/14218 |
identifier_str_mv |
Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 11, n. 4, p. 241-247, 2009. 1516-635X 10.1590/S1516-635X2009000400005 S1516-635X2009000400005 WOS:000276475000005 S1516-635X2009000400005.pdf 6743591347106727 |
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 |
241-247 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 |
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1810021325357449216 |