Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/6626 |
Resumo: | The aim of this work was to investigate the influence of diet energy level on performance and hormonal profiles of broilers during post restriction period. It was a split-plot experiment, and the main treatments were in a 2x2 factorial scheme. Birds were fed restricted to 30% of the ad libitum intake, from 7 to 14 days of age. After the restriction period, birds were fed ad libitum with diets containing low (2,900 kcal ME/kg) or high (3,200 kcal ME/kg) energy until 49 days of age. Broilers fed with high energy ration showed lower feed intake and better feed conversion and decreased carcass protein; however, abdominal fat pad, and total carcass fat were not affected by ration energy levels or feeding program. Neither diet energy level nor feed restriction program changed body weight at 49 days. The profile of insulin-like growth factor-1 (IGF-1) was reduced during the feed restriction period, but increased at refeeding period. Feeding program and ration energy level did not affect T3, T4 and growth hormone serum concentrations. Feed restriction at 30% of ad libitum intake is not enough to promote changes on carcass quality, related to fat deposition, and on metabolic hormone levels, except IGF-1 seric level that has rapid increase after feed restriction. |
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Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction periodDesempenho e perfil hormonal de frangos alimentados com diferentes níveis energéticos após restrição alimentarcarcass composition; weight gain; hormones; feeding levelcomposição da carcaça; ganho de peso; hormônio; nível de alimentaçãoThe aim of this work was to investigate the influence of diet energy level on performance and hormonal profiles of broilers during post restriction period. It was a split-plot experiment, and the main treatments were in a 2x2 factorial scheme. Birds were fed restricted to 30% of the ad libitum intake, from 7 to 14 days of age. After the restriction period, birds were fed ad libitum with diets containing low (2,900 kcal ME/kg) or high (3,200 kcal ME/kg) energy until 49 days of age. Broilers fed with high energy ration showed lower feed intake and better feed conversion and decreased carcass protein; however, abdominal fat pad, and total carcass fat were not affected by ration energy levels or feeding program. Neither diet energy level nor feed restriction program changed body weight at 49 days. The profile of insulin-like growth factor-1 (IGF-1) was reduced during the feed restriction period, but increased at refeeding period. Feeding program and ration energy level did not affect T3, T4 and growth hormone serum concentrations. Feed restriction at 30% of ad libitum intake is not enough to promote changes on carcass quality, related to fat deposition, and on metabolic hormone levels, except IGF-1 seric level that has rapid increase after feed restriction.O objetivo deste trabalho foi investigar o efeito do nível energético da dieta no desempenho e nos níveis hormonais após um período de restrição alimentar. O experimento foi em parcelas subdivididas, com os tratamentos principais em um esquema fatorial 2x2. O consumo de ração das aves foi reduzido em 30% em relação ao grupo controle, do 7o ao 14o dia de idade, sendo posteriormente alimentadas ad libitum com dietas contendo baixa (2.900 kcal EM/kg) ou alta energia (3.200 kcal EM/kg), até os 49 dias de idade. Aves alimentadas com o maior nível energético mostraram um menor consumo de ração, melhor conversão alimentar e decréscimo na quantidade de proteína da carcaça. A gordura abdominal e total da carcaça não foram afetadas pelo nível energético ou programa alimentar, assim como o peso corporal aos 49 dias de idade. Os níveis séricos do fator de crescimento tipo insulina-1 (FCI-1) foram reduzidos durante a restrição, mas aumentou com a realimentação. O programa alimentar e o nível energético não afetaram as concentrações de T3, T4 e hormônio de crescimento. A restrição alimentar em 30% do consumo ad libitum não é suficiente para promover alterações na qualidade da carcaça nem nas concentrações dos hormônios metabólicos, com exceção do FCI-1, que apresenta um rápido aumento após a restrição.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraGiachetto, Poliana FernandaGuerreiro, Erika NomuraFerro, Jesus AparecidoFerro, Maria Inês TiraboschiFurlan, Renato LuisMacari, Marcos2003-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6626Pesquisa Agropecuaria Brasileira; v.38, n.6, jun. 2003; 697-702Pesquisa Agropecuária Brasileira; v.38, n.6, jun. 2003; 697-7021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/6626/3683info:eu-repo/semantics/openAccess2010-08-18T17:38:04Zoai:ojs.seer.sct.embrapa.br:article/6626Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-18T17:38:04Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period Desempenho e perfil hormonal de frangos alimentados com diferentes níveis energéticos após restrição alimentar |
title |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period |
spellingShingle |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period Giachetto, Poliana Fernanda carcass composition; weight gain; hormones; feeding level composição da carcaça; ganho de peso; hormônio; nível de alimentação |
title_short |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period |
title_full |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period |
title_fullStr |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period |
title_full_unstemmed |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period |
title_sort |
Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period |
author |
Giachetto, Poliana Fernanda |
author_facet |
Giachetto, Poliana Fernanda Guerreiro, Erika Nomura Ferro, Jesus Aparecido Ferro, Maria Inês Tiraboschi Furlan, Renato Luis Macari, Marcos |
author_role |
author |
author2 |
Guerreiro, Erika Nomura Ferro, Jesus Aparecido Ferro, Maria Inês Tiraboschi Furlan, Renato Luis Macari, Marcos |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Giachetto, Poliana Fernanda Guerreiro, Erika Nomura Ferro, Jesus Aparecido Ferro, Maria Inês Tiraboschi Furlan, Renato Luis Macari, Marcos |
dc.subject.por.fl_str_mv |
carcass composition; weight gain; hormones; feeding level composição da carcaça; ganho de peso; hormônio; nível de alimentação |
topic |
carcass composition; weight gain; hormones; feeding level composição da carcaça; ganho de peso; hormônio; nível de alimentação |
description |
The aim of this work was to investigate the influence of diet energy level on performance and hormonal profiles of broilers during post restriction period. It was a split-plot experiment, and the main treatments were in a 2x2 factorial scheme. Birds were fed restricted to 30% of the ad libitum intake, from 7 to 14 days of age. After the restriction period, birds were fed ad libitum with diets containing low (2,900 kcal ME/kg) or high (3,200 kcal ME/kg) energy until 49 days of age. Broilers fed with high energy ration showed lower feed intake and better feed conversion and decreased carcass protein; however, abdominal fat pad, and total carcass fat were not affected by ration energy levels or feeding program. Neither diet energy level nor feed restriction program changed body weight at 49 days. The profile of insulin-like growth factor-1 (IGF-1) was reduced during the feed restriction period, but increased at refeeding period. Feeding program and ration energy level did not affect T3, T4 and growth hormone serum concentrations. Feed restriction at 30% of ad libitum intake is not enough to promote changes on carcass quality, related to fat deposition, and on metabolic hormone levels, except IGF-1 seric level that has rapid increase after feed restriction. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-06-01 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/6626 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6626 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6626/3683 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.38, n.6, jun. 2003; 697-702 Pesquisa Agropecuária Brasileira; v.38, n.6, jun. 2003; 697-702 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416699620360192 |