Metabolizable energy levels for semi-heavy laying hens at the second production cycle
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500011 |
Resumo: | This study was carried out to evaluate the energy levels in the diet to obtain better performance rates and quality of eggs from laying hens in the second production cycle. One hundred and eighty Bovans Goldline laying hens with 62 weeks of age were used during four 28-day periods. A completely randomized experimental design was used with four metabolizable energy levels (2,650, 2,725, 2,800, 2,875 and 2,950 kcal/kg), each with six replicates of six birds. The energy level of diet did not affect the weight of the egg, yolk, albumen and eggshell, the percentages of yolk, albumen and eggshell, yolk color and egg specific gravity. Feed intake, egg production, egg mass and feed conversion per egg mass and per dozen eggs increased significantly with increasing levels of metabolizable energy. Feed intake decreased linearly as the energy level in the diet increased. The metabolizable energy levels showed a quadratic effect on egg production, egg mass and feed conversion per egg mass and per dozen eggs. The metabolizable energy level of 2,830 kcal/kg was the most appropriate to promote better performance and quality of eggs from laying hens in the second production cycle. |
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Metabolizable energy levels for semi-heavy laying hens at the second production cycleegg qualityperformancepostureThis study was carried out to evaluate the energy levels in the diet to obtain better performance rates and quality of eggs from laying hens in the second production cycle. One hundred and eighty Bovans Goldline laying hens with 62 weeks of age were used during four 28-day periods. A completely randomized experimental design was used with four metabolizable energy levels (2,650, 2,725, 2,800, 2,875 and 2,950 kcal/kg), each with six replicates of six birds. The energy level of diet did not affect the weight of the egg, yolk, albumen and eggshell, the percentages of yolk, albumen and eggshell, yolk color and egg specific gravity. Feed intake, egg production, egg mass and feed conversion per egg mass and per dozen eggs increased significantly with increasing levels of metabolizable energy. Feed intake decreased linearly as the energy level in the diet increased. The metabolizable energy levels showed a quadratic effect on egg production, egg mass and feed conversion per egg mass and per dozen eggs. The metabolizable energy level of 2,830 kcal/kg was the most appropriate to promote better performance and quality of eggs from laying hens in the second production cycle.Sociedade Brasileira de Zootecnia2009-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500011Revista Brasileira de Zootecnia v.38 n.5 2009reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982009000500011info:eu-repo/semantics/openAccessCosta,Fernando Guilherme PerazzoCosta,Janaine Sena daGoulart,Cláudia de CastroFigueiredo-Lima,Denise FontanaLima Neto,Raul da CunhaQuirino,Bárbara Josefina de Sousaeng2009-06-17T00:00:00Zoai:scielo:S1516-35982009000500011Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2009-06-17T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
title |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
spellingShingle |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle Costa,Fernando Guilherme Perazzo egg quality performance posture |
title_short |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
title_full |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
title_fullStr |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
title_full_unstemmed |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
title_sort |
Metabolizable energy levels for semi-heavy laying hens at the second production cycle |
author |
Costa,Fernando Guilherme Perazzo |
author_facet |
Costa,Fernando Guilherme Perazzo Costa,Janaine Sena da Goulart,Cláudia de Castro Figueiredo-Lima,Denise Fontana Lima Neto,Raul da Cunha Quirino,Bárbara Josefina de Sousa |
author_role |
author |
author2 |
Costa,Janaine Sena da Goulart,Cláudia de Castro Figueiredo-Lima,Denise Fontana Lima Neto,Raul da Cunha Quirino,Bárbara Josefina de Sousa |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Costa,Fernando Guilherme Perazzo Costa,Janaine Sena da Goulart,Cláudia de Castro Figueiredo-Lima,Denise Fontana Lima Neto,Raul da Cunha Quirino,Bárbara Josefina de Sousa |
dc.subject.por.fl_str_mv |
egg quality performance posture |
topic |
egg quality performance posture |
description |
This study was carried out to evaluate the energy levels in the diet to obtain better performance rates and quality of eggs from laying hens in the second production cycle. One hundred and eighty Bovans Goldline laying hens with 62 weeks of age were used during four 28-day periods. A completely randomized experimental design was used with four metabolizable energy levels (2,650, 2,725, 2,800, 2,875 and 2,950 kcal/kg), each with six replicates of six birds. The energy level of diet did not affect the weight of the egg, yolk, albumen and eggshell, the percentages of yolk, albumen and eggshell, yolk color and egg specific gravity. Feed intake, egg production, egg mass and feed conversion per egg mass and per dozen eggs increased significantly with increasing levels of metabolizable energy. Feed intake decreased linearly as the energy level in the diet increased. The metabolizable energy levels showed a quadratic effect on egg production, egg mass and feed conversion per egg mass and per dozen eggs. The metabolizable energy level of 2,830 kcal/kg was the most appropriate to promote better performance and quality of eggs from laying hens in the second production cycle. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982009000500011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.38 n.5 2009 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
_version_ |
1750318144229998592 |