Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Poultry Science (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200010 |
Resumo: | Two completely randomized trials were conducted to estimate protein requirements of Japanese quails during the rearing and laying periods. In each trial, 150 quails were distributed in five treatments with five repetitions. Crude protein levels in the rearing period were 18, 20, 22, 24 and 26% (Trial 1) and during the laying period were 16, 18, 20, 22 and 24% (Trial 2). A quadratic effect of protein level was observed on weight gain from seven to 35 days (Trial 1). There were no effects of protein levels on feed intake and feed conversion. Protein levels in experimental diets during rearing had no effect on egg production up to 63 days. However, laying was delayed and variation in body weight was greater in quails fed lower protein levels. In Trial 2, a quadratic effect of protein levels was seen on egg production and feed conversion; and a linear effect was seen on mean egg weight and feed intake. Crude protein levels of 23.08% and 21.95% were estimated by regression equations for rearing and laying, respectively. |
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Brazilian Journal of Poultry Science (Online) |
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Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periodscrude proteinegg productionJapanese quailsTwo completely randomized trials were conducted to estimate protein requirements of Japanese quails during the rearing and laying periods. In each trial, 150 quails were distributed in five treatments with five repetitions. Crude protein levels in the rearing period were 18, 20, 22, 24 and 26% (Trial 1) and during the laying period were 16, 18, 20, 22 and 24% (Trial 2). A quadratic effect of protein level was observed on weight gain from seven to 35 days (Trial 1). There were no effects of protein levels on feed intake and feed conversion. Protein levels in experimental diets during rearing had no effect on egg production up to 63 days. However, laying was delayed and variation in body weight was greater in quails fed lower protein levels. In Trial 2, a quadratic effect of protein levels was seen on egg production and feed conversion; and a linear effect was seen on mean egg weight and feed intake. Crude protein levels of 23.08% and 21.95% were estimated by regression equations for rearing and laying, respectively.Fundacao de Apoio a Ciência e Tecnologia Avicolas2003-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200010Brazilian Journal of Poultry Science v.5 n.2 2003reponame:Brazilian Journal of Poultry Science (Online)instname:Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)instacron:FACTA10.1590/S1516-635X2003000200010info:eu-repo/semantics/openAccessSoares,R da TRNFonseca,JBSantos,AS de O dosMercandante,MBeng2003-11-12T00:00:00Zoai:scielo:S1516-635X2003000200010Revistahttp://www.scielo.br/rbcahttps://old.scielo.br/oai/scielo-oai.php||rvfacta@terra.com.br1806-90611516-635Xopendoar:2003-11-12T00:00Brazilian Journal of Poultry Science (Online) - Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA)false |
dc.title.none.fl_str_mv |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
title |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
spellingShingle |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods Soares,R da TRN crude protein egg production Japanese quails |
title_short |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
title_full |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
title_fullStr |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
title_full_unstemmed |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
title_sort |
Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods |
author |
Soares,R da TRN |
author_facet |
Soares,R da TRN Fonseca,JB Santos,AS de O dos Mercandante,MB |
author_role |
author |
author2 |
Fonseca,JB Santos,AS de O dos Mercandante,MB |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Soares,R da TRN Fonseca,JB Santos,AS de O dos Mercandante,MB |
dc.subject.por.fl_str_mv |
crude protein egg production Japanese quails |
topic |
crude protein egg production Japanese quails |
description |
Two completely randomized trials were conducted to estimate protein requirements of Japanese quails during the rearing and laying periods. In each trial, 150 quails were distributed in five treatments with five repetitions. Crude protein levels in the rearing period were 18, 20, 22, 24 and 26% (Trial 1) and during the laying period were 16, 18, 20, 22 and 24% (Trial 2). A quadratic effect of protein level was observed on weight gain from seven to 35 days (Trial 1). There were no effects of protein levels on feed intake and feed conversion. Protein levels in experimental diets during rearing had no effect on egg production up to 63 days. However, laying was delayed and variation in body weight was greater in quails fed lower protein levels. In Trial 2, a quadratic effect of protein levels was seen on egg production and feed conversion; and a linear effect was seen on mean egg weight and feed intake. Crude protein levels of 23.08% and 21.95% were estimated by regression equations for rearing and laying, respectively. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-05-01 |
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=S1516-635X2003000200010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-635X2003000200010 |
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 |
Fundacao de Apoio a Ciência e Tecnologia Avicolas |
publisher.none.fl_str_mv |
Fundacao de Apoio a Ciência e Tecnologia Avicolas |
dc.source.none.fl_str_mv |
Brazilian Journal of Poultry Science v.5 n.2 2003 reponame:Brazilian Journal of Poultry Science (Online) instname:Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) instacron:FACTA |
instname_str |
Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) |
instacron_str |
FACTA |
institution |
FACTA |
reponame_str |
Brazilian Journal of Poultry Science (Online) |
collection |
Brazilian Journal of Poultry Science (Online) |
repository.name.fl_str_mv |
Brazilian Journal of Poultry Science (Online) - Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) |
repository.mail.fl_str_mv |
||rvfacta@terra.com.br |
_version_ |
1754122510850326528 |