Calcium particle size and feeding time influence egg shell quality in laying hens
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42926 |
Resumo: | An experiment with Leghorn laying hens was undertaken to determine the effect of oyster shell particle size and feeding time on different production variables, calcium retention, plasma calcium content and egg internal and external quality. Two hundred Leghorn layers (40 weeks old old) were allocated in five dietary treatments with four replicates during ten weeks. Two particle size combinations (wherein 50% of calcium substituted by medium or coarse particles (1-2 mmand 2-4 mmrespectively) and two feeding time (8-pm or 9-am) were compared against a control diet (100% ground, <1 mmwhich fed with meal). Egg number, egg production, egg mass and feed conversion ratio did not differ among treatments (p > 0.05). Hens fed diets containing coarse Ca had significantly greater feed intake and calcium content of excreta (p > 0.05), whereas medium particle size reduced feed intake compared to control. Coarse particle size and feeding time at 9-pm significantly increased the calcium content of egg shell, egg shell thickness, egg surface area (ESA) and shell weight per unit surface area (SWUSA) (p < 0.05). Plasma calcium concentration, gizzard digesta calcium content and egg specific gravity were not affected by treatments (p > 0.05). Providing of calcium at 9-pm resulted an increase of egg shell (%), shell weight and thickness (p < 0.05). The results have shown that substitution of fine oyster shell with 50% coarse particles (2-4 mm) and feeding time at 9-pm have better effects on egg shell quality. |
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Acta Scientiarum. Animal Sciences (Online) |
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Calcium particle size and feeding time influence egg shell quality in laying henscalcium retentionfeeding timeoyster shellparticle size. An experiment with Leghorn laying hens was undertaken to determine the effect of oyster shell particle size and feeding time on different production variables, calcium retention, plasma calcium content and egg internal and external quality. Two hundred Leghorn layers (40 weeks old old) were allocated in five dietary treatments with four replicates during ten weeks. Two particle size combinations (wherein 50% of calcium substituted by medium or coarse particles (1-2 mmand 2-4 mmrespectively) and two feeding time (8-pm or 9-am) were compared against a control diet (100% ground, <1 mmwhich fed with meal). Egg number, egg production, egg mass and feed conversion ratio did not differ among treatments (p > 0.05). Hens fed diets containing coarse Ca had significantly greater feed intake and calcium content of excreta (p > 0.05), whereas medium particle size reduced feed intake compared to control. Coarse particle size and feeding time at 9-pm significantly increased the calcium content of egg shell, egg shell thickness, egg surface area (ESA) and shell weight per unit surface area (SWUSA) (p < 0.05). Plasma calcium concentration, gizzard digesta calcium content and egg specific gravity were not affected by treatments (p > 0.05). Providing of calcium at 9-pm resulted an increase of egg shell (%), shell weight and thickness (p < 0.05). The results have shown that substitution of fine oyster shell with 50% coarse particles (2-4 mm) and feeding time at 9-pm have better effects on egg shell quality.Editora da Universidade Estadual de Maringá2019-02-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4292610.4025/actascianimsci.v41i1.42926Acta Scientiarum. Animal Sciences; Vol 41 (2019): Publicação Contínua; e42926Acta Scientiarum. Animal Sciences; v. 41 (2019): Publicação Contínua; e429261807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42926/pdfCopyright (c) 2019 Acta Scientiarum. Animal Scienceshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSaki, AliasgharRahmani, AbbasYousefi, Azam2019-07-17T08:32:20Zoai:periodicos.uem.br/ojs:article/42926Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2019-07-17T08:32:20Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Calcium particle size and feeding time influence egg shell quality in laying hens |
title |
Calcium particle size and feeding time influence egg shell quality in laying hens |
spellingShingle |
Calcium particle size and feeding time influence egg shell quality in laying hens Saki, Aliasghar calcium retention feeding time oyster shell particle size. |
title_short |
Calcium particle size and feeding time influence egg shell quality in laying hens |
title_full |
Calcium particle size and feeding time influence egg shell quality in laying hens |
title_fullStr |
Calcium particle size and feeding time influence egg shell quality in laying hens |
title_full_unstemmed |
Calcium particle size and feeding time influence egg shell quality in laying hens |
title_sort |
Calcium particle size and feeding time influence egg shell quality in laying hens |
author |
Saki, Aliasghar |
author_facet |
Saki, Aliasghar Rahmani, Abbas Yousefi, Azam |
author_role |
author |
author2 |
Rahmani, Abbas Yousefi, Azam |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Saki, Aliasghar Rahmani, Abbas Yousefi, Azam |
dc.subject.por.fl_str_mv |
calcium retention feeding time oyster shell particle size. |
topic |
calcium retention feeding time oyster shell particle size. |
description |
An experiment with Leghorn laying hens was undertaken to determine the effect of oyster shell particle size and feeding time on different production variables, calcium retention, plasma calcium content and egg internal and external quality. Two hundred Leghorn layers (40 weeks old old) were allocated in five dietary treatments with four replicates during ten weeks. Two particle size combinations (wherein 50% of calcium substituted by medium or coarse particles (1-2 mmand 2-4 mmrespectively) and two feeding time (8-pm or 9-am) were compared against a control diet (100% ground, <1 mmwhich fed with meal). Egg number, egg production, egg mass and feed conversion ratio did not differ among treatments (p > 0.05). Hens fed diets containing coarse Ca had significantly greater feed intake and calcium content of excreta (p > 0.05), whereas medium particle size reduced feed intake compared to control. Coarse particle size and feeding time at 9-pm significantly increased the calcium content of egg shell, egg shell thickness, egg surface area (ESA) and shell weight per unit surface area (SWUSA) (p < 0.05). Plasma calcium concentration, gizzard digesta calcium content and egg specific gravity were not affected by treatments (p > 0.05). Providing of calcium at 9-pm resulted an increase of egg shell (%), shell weight and thickness (p < 0.05). The results have shown that substitution of fine oyster shell with 50% coarse particles (2-4 mm) and feeding time at 9-pm have better effects on egg shell quality. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-02-14 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42926 10.4025/actascianimsci.v41i1.42926 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42926 |
identifier_str_mv |
10.4025/actascianimsci.v41i1.42926 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42926/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Acta Scientiarum. Animal Sciences https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Acta Scientiarum. Animal Sciences https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Animal Sciences; Vol 41 (2019): Publicação Contínua; e42926 Acta Scientiarum. Animal Sciences; v. 41 (2019): Publicação Contínua; e42926 1807-8672 1806-2636 reponame:Acta Scientiarum. Animal Sciences (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Animal Sciences (Online) |
collection |
Acta Scientiarum. Animal Sciences (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com |
_version_ |
1799315362385231872 |