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: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/263567 |
Resumo: | 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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Cardinal, Kátia MariaMoraes, Mariana Lemos deAndretta, InesSchirmann, Graciele DaliseBelote, Bruna LuizaBarrios, Miguel AlejandroSantin, ElizabethRibeiro, Andrea Machado Leal2023-08-16T03:30:48Z20191516-3598http://hdl.handle.net/10183/263567001172410We 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.application/pdfengRevista brasileira de zootecnia. Viçosa, MG. Vol. 48 (2019), [art.] e20180232, 11 p.Frango de corteProteaseNutricao animalAditivo alimentarAminoacidAnimal nutritionDigestive physiologyEnzymeFeed additiveGrowth performance and intestinal health of broilers fed a standard or low-protein diet with the addition of a proteaseinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001172410.pdf.txt001172410.pdf.txtExtracted Texttext/plain43988http://www.lume.ufrgs.br/bitstream/10183/263567/2/001172410.pdf.txt80ea0687f994ad19bf72217b7cabe794MD52ORIGINAL001172410.pdfTexto completo (inglês)application/pdf336873http://www.lume.ufrgs.br/bitstream/10183/263567/1/001172410.pdf6f369425998589d78b7f8c71fc7b14b9MD5110183/2635672023-08-17 03:34:21.332125oai:www.lume.ufrgs.br:10183/263567Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-17T06:34:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.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 Frango de corte Protease Nutricao animal Aditivo alimentar 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, Andrea Machado Leal |
author_role |
author |
author2 |
Moraes, Mariana Lemos de Andretta, Ines Schirmann, Graciele Dalise Belote, Bruna Luiza Barrios, Miguel Alejandro Santin, Elizabeth Ribeiro, Andrea 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, Andrea Machado Leal |
dc.subject.por.fl_str_mv |
Frango de corte Protease Nutricao animal Aditivo alimentar |
topic |
Frango de corte Protease Nutricao animal Aditivo alimentar Aminoacid Animal nutrition Digestive physiology Enzyme Feed additive |
dc.subject.eng.fl_str_mv |
Aminoacid Animal nutrition Digestive physiology Enzyme Feed additive |
description |
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.issued.fl_str_mv |
2019 |
dc.date.accessioned.fl_str_mv |
2023-08-16T03:30:48Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/263567 |
dc.identifier.issn.pt_BR.fl_str_mv |
1516-3598 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001172410 |
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1516-3598 001172410 |
url |
http://hdl.handle.net/10183/263567 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista brasileira de zootecnia. Viçosa, MG. Vol. 48 (2019), [art.] e20180232, 11 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
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