Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease
Autor(a) principal: | |
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Data de Publicação: | 2019 |
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=S1516-35982019000100524 |
Resumo: | ABSTRACT We evaluated the effects of a protease supplementation on the growth performance and intestinal health of broilers. Cobb chicks (392; 1-42 d) were divided into four treatments (seven replicates of 14 birds each). There were two feed formulations: a standard diet (SD) and a low crude protein and digestible amino acids diet (Low CP&AA). The two diets were either supplemented (+P) or not (−P) with a protease (Jefo Protease; 1.25 g kg−1). Performance was evaluated by feeding phases (1-7, 8-21, 21-35, and 35-42 d). On day 28, ileum samples were analyzed by a morphometric index for histological alterations (I See Inside Scoring System – ISI). Broilers fed the Low CP&AA had a poor feed conversion ratio (FCR); however, the addition of the protease to the Low CP&AA positively affected FCR and body weight gain and promoted a performance similar to the group fed SD−P. Birds fed diets supplemented with the protease presented the best ISI morphological index, mainly as a result of the low number of alterations regarding the lamina propria, epithelial thickness, and enterocyte proliferation. It is possible to conclude that the enzyme improves feed conversion and lamina propria, epithelial thickness, and proliferation of enterocytes index of broiler chickens when added to a standard diet or with a low crude protein and digestible amino acids diet. |
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Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a proteaseaminoacidanimal nutritiondigestive physiologyenzymefeed additiveABSTRACT We evaluated the effects of a protease supplementation on the growth performance and intestinal health of broilers. Cobb chicks (392; 1-42 d) were divided into four treatments (seven replicates of 14 birds each). There were two feed formulations: a standard diet (SD) and a low crude protein and digestible amino acids diet (Low CP&AA). The two diets were either supplemented (+P) or not (−P) with a protease (Jefo Protease; 1.25 g kg−1). Performance was evaluated by feeding phases (1-7, 8-21, 21-35, and 35-42 d). On day 28, ileum samples were analyzed by a morphometric index for histological alterations (I See Inside Scoring System – ISI). Broilers fed the Low CP&AA had a poor feed conversion ratio (FCR); however, the addition of the protease to the Low CP&AA positively affected FCR and body weight gain and promoted a performance similar to the group fed SD−P. Birds fed diets supplemented with the protease presented the best ISI morphological index, mainly as a result of the low number of alterations regarding the lamina propria, epithelial thickness, and enterocyte proliferation. It is possible to conclude that the enzyme improves feed conversion and lamina propria, epithelial thickness, and proliferation of enterocytes index of broiler chickens when added to a standard diet or with a low crude protein and digestible amino acids diet.Sociedade Brasileira de Zootecnia2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100524Revista Brasileira de Zootecnia v.48 2019reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/rbz4820180232info:eu-repo/semantics/openAccessCardinal,Kátia MariaMoraes,Mariana Lemos deAndretta,InesSchirmann,Graciele DaliseBelote,Bruna LuizaBarrios,Miguel AlejandroSantin,ElizabethRibeiro,Andréa Machado Lealeng2019-10-25T00:00:00Zoai:scielo:S1516-35982019000100524Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2019-10-25T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
title |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
spellingShingle |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease Cardinal,Kátia Maria aminoacid animal nutrition digestive physiology enzyme feed additive |
title_short |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
title_full |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
title_fullStr |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
title_full_unstemmed |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
title_sort |
Growth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a protease |
author |
Cardinal,Kátia Maria |
author_facet |
Cardinal,Kátia Maria Moraes,Mariana Lemos de Andretta,Ines Schirmann,Graciele Dalise Belote,Bruna Luiza Barrios,Miguel Alejandro Santin,Elizabeth Ribeiro,Andréa Machado Leal |
author_role |
author |
author2 |
Moraes,Mariana Lemos de Andretta,Ines Schirmann,Graciele Dalise Belote,Bruna Luiza Barrios,Miguel Alejandro Santin,Elizabeth Ribeiro,Andréa Machado Leal |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Cardinal,Kátia Maria Moraes,Mariana Lemos de Andretta,Ines Schirmann,Graciele Dalise Belote,Bruna Luiza Barrios,Miguel Alejandro Santin,Elizabeth Ribeiro,Andréa Machado Leal |
dc.subject.por.fl_str_mv |
aminoacid animal nutrition digestive physiology enzyme feed additive |
topic |
aminoacid animal nutrition digestive physiology enzyme feed additive |
description |
ABSTRACT We evaluated the effects of a protease supplementation on the growth performance and intestinal health of broilers. Cobb chicks (392; 1-42 d) were divided into four treatments (seven replicates of 14 birds each). There were two feed formulations: a standard diet (SD) and a low crude protein and digestible amino acids diet (Low CP&AA). The two diets were either supplemented (+P) or not (−P) with a protease (Jefo Protease; 1.25 g kg−1). Performance was evaluated by feeding phases (1-7, 8-21, 21-35, and 35-42 d). On day 28, ileum samples were analyzed by a morphometric index for histological alterations (I See Inside Scoring System – ISI). Broilers fed the Low CP&AA had a poor feed conversion ratio (FCR); however, the addition of the protease to the Low CP&AA positively affected FCR and body weight gain and promoted a performance similar to the group fed SD−P. Birds fed diets supplemented with the protease presented the best ISI morphological index, mainly as a result of the low number of alterations regarding the lamina propria, epithelial thickness, and enterocyte proliferation. It is possible to conclude that the enzyme improves feed conversion and lamina propria, epithelial thickness, and proliferation of enterocytes index of broiler chickens when added to a standard diet or with a low crude protein and digestible amino acids diet. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
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=S1516-35982019000100524 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100524 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/rbz4820180232 |
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.48 2019 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_ |
1750318153271869440 |