Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.

Detalhes bibliográficos
Autor(a) principal: LOPES, F. C. F.
Data de Publicação: 2021
Outros Autores: MORENZ, M. J. F., LEDO, F. J. da S., CARNEIRO, J. da C., PACIULLO, D. S. C., ANDRADE, P. J. M., MORAES, C. T. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133444
https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1981
Resumo: This study aimed to evaluate the chemical composition and fatty acid (FA) profile of chopped forage and silage of BRS Capiaçu elephant grass at four regrowth ages: 50, 70, 90 and 110 days. A randomized block design with five replications was used. The ensiling was carried out manually in experimental silos without wilting using no additives or bacterial inoculants. The results were analyzed using mixed models (P < 0.05). The model included treatment (regrowth age) as a fixed effect and block as a random effect. Linear and quadratic effects of the treatments were analyzed using orthogonal contrasts. There were linear increases in the dry matter (DM, g kg-1) and lignin (g kg-1 DM) contents and linear reductions in the in vitro DM digestibility (g kg-1) of chopped grass and silage as a function of regrowth age (P < 0.001). Quadratic effects (P ? 0.01) were observed for the chopped grass contents (g kg-1 DM) of crude protein (CP), ether extract (EE) and neutral detergent fiber (NDF) as a function of regrowth age. There were linear decreases (P < 0.0001) in the CP content (g kg-1 DM) and pH and linear increases (P < 0.001) in the EE and NDF contents (g kg-1 DM) in the silage as a function of regrowth age. There were linear decreases (P < 0.01) in the chopped grass contents and linear increases (P < 0.05) in the silage contents of total FAs, linoleic and ?-linolenic acids (g kg-1 DM) as a function of regrowth age. BRS Capiaçu elephant grass must be harvested at up to 70 days of regrowth to obtain forage with good nutritional value and the highest levels of linoleic and ?-linolenic acids (g kg-1 DM). To produce silages with adequate pH values and the highest levels of linoleic and ?-linolenic acids (g kg-1 DM), BRS Capiaçu must be harvested between 90 and 110 days of regrowth.
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spelling Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.Ácido linolênicoÁcido LinoléicoGramínea TropicalPennisetum PurpureumSilagemLinoleic acidLinolenic acidSilageTropical grasslandsThis study aimed to evaluate the chemical composition and fatty acid (FA) profile of chopped forage and silage of BRS Capiaçu elephant grass at four regrowth ages: 50, 70, 90 and 110 days. A randomized block design with five replications was used. The ensiling was carried out manually in experimental silos without wilting using no additives or bacterial inoculants. The results were analyzed using mixed models (P < 0.05). The model included treatment (regrowth age) as a fixed effect and block as a random effect. Linear and quadratic effects of the treatments were analyzed using orthogonal contrasts. There were linear increases in the dry matter (DM, g kg-1) and lignin (g kg-1 DM) contents and linear reductions in the in vitro DM digestibility (g kg-1) of chopped grass and silage as a function of regrowth age (P < 0.001). Quadratic effects (P ? 0.01) were observed for the chopped grass contents (g kg-1 DM) of crude protein (CP), ether extract (EE) and neutral detergent fiber (NDF) as a function of regrowth age. There were linear decreases (P < 0.0001) in the CP content (g kg-1 DM) and pH and linear increases (P < 0.001) in the EE and NDF contents (g kg-1 DM) in the silage as a function of regrowth age. There were linear decreases (P < 0.01) in the chopped grass contents and linear increases (P < 0.05) in the silage contents of total FAs, linoleic and ?-linolenic acids (g kg-1 DM) as a function of regrowth age. BRS Capiaçu elephant grass must be harvested at up to 70 days of regrowth to obtain forage with good nutritional value and the highest levels of linoleic and ?-linolenic acids (g kg-1 DM). To produce silages with adequate pH values and the highest levels of linoleic and ?-linolenic acids (g kg-1 DM), BRS Capiaçu must be harvested between 90 and 110 days of regrowth.FERNANDO CESAR FERRAZ LOPES, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL; FRANCISCO JOSE DA SILVA LEDO, CNPGL; JAILTON DA COSTA CARNEIRO, CNPGL; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; PAULINO JOSE MELO ANDRADE, CNPGL; CONRADO TRIGO DE MORAES, Universidade Federal de Viçosa.LOPES, F. C. F.MORENZ, M. J. F.LEDO, F. J. da S.CARNEIRO, J. da C.PACIULLO, D. S. C.ANDRADE, P. J. M.MORAES, C. T. de2021-08-11T13:00:42Z2021-08-11T13:00:42Z2021-08-112021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSemina: Ciências Agrárias, v. 42, n. 3, p. 1981-2004, 2021.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133444https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1981enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2021-08-11T13:00:51Zoai:www.alice.cnptia.embrapa.br:doc/1133444Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542021-08-11T13:00:51falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542021-08-11T13:00:51Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
title Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
spellingShingle Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
LOPES, F. C. F.
Ácido linolênico
Ácido Linoléico
Gramínea Tropical
Pennisetum Purpureum
Silagem
Linoleic acid
Linolenic acid
Silage
Tropical grasslands
title_short Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
title_full Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
title_fullStr Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
title_full_unstemmed Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
title_sort Chemical composition and fatty acid profile of BRS Capiaçu ensiled at different regrowth ages.
author LOPES, F. C. F.
author_facet LOPES, F. C. F.
MORENZ, M. J. F.
LEDO, F. J. da S.
CARNEIRO, J. da C.
PACIULLO, D. S. C.
ANDRADE, P. J. M.
MORAES, C. T. de
author_role author
author2 MORENZ, M. J. F.
LEDO, F. J. da S.
CARNEIRO, J. da C.
PACIULLO, D. S. C.
ANDRADE, P. J. M.
MORAES, C. T. de
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv FERNANDO CESAR FERRAZ LOPES, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL; FRANCISCO JOSE DA SILVA LEDO, CNPGL; JAILTON DA COSTA CARNEIRO, CNPGL; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; PAULINO JOSE MELO ANDRADE, CNPGL; CONRADO TRIGO DE MORAES, Universidade Federal de Viçosa.
dc.contributor.author.fl_str_mv LOPES, F. C. F.
MORENZ, M. J. F.
LEDO, F. J. da S.
CARNEIRO, J. da C.
PACIULLO, D. S. C.
ANDRADE, P. J. M.
MORAES, C. T. de
dc.subject.por.fl_str_mv Ácido linolênico
Ácido Linoléico
Gramínea Tropical
Pennisetum Purpureum
Silagem
Linoleic acid
Linolenic acid
Silage
Tropical grasslands
topic Ácido linolênico
Ácido Linoléico
Gramínea Tropical
Pennisetum Purpureum
Silagem
Linoleic acid
Linolenic acid
Silage
Tropical grasslands
description This study aimed to evaluate the chemical composition and fatty acid (FA) profile of chopped forage and silage of BRS Capiaçu elephant grass at four regrowth ages: 50, 70, 90 and 110 days. A randomized block design with five replications was used. The ensiling was carried out manually in experimental silos without wilting using no additives or bacterial inoculants. The results were analyzed using mixed models (P < 0.05). The model included treatment (regrowth age) as a fixed effect and block as a random effect. Linear and quadratic effects of the treatments were analyzed using orthogonal contrasts. There were linear increases in the dry matter (DM, g kg-1) and lignin (g kg-1 DM) contents and linear reductions in the in vitro DM digestibility (g kg-1) of chopped grass and silage as a function of regrowth age (P < 0.001). Quadratic effects (P ? 0.01) were observed for the chopped grass contents (g kg-1 DM) of crude protein (CP), ether extract (EE) and neutral detergent fiber (NDF) as a function of regrowth age. There were linear decreases (P < 0.0001) in the CP content (g kg-1 DM) and pH and linear increases (P < 0.001) in the EE and NDF contents (g kg-1 DM) in the silage as a function of regrowth age. There were linear decreases (P < 0.01) in the chopped grass contents and linear increases (P < 0.05) in the silage contents of total FAs, linoleic and ?-linolenic acids (g kg-1 DM) as a function of regrowth age. BRS Capiaçu elephant grass must be harvested at up to 70 days of regrowth to obtain forage with good nutritional value and the highest levels of linoleic and ?-linolenic acids (g kg-1 DM). To produce silages with adequate pH values and the highest levels of linoleic and ?-linolenic acids (g kg-1 DM), BRS Capiaçu must be harvested between 90 and 110 days of regrowth.
publishDate 2021
dc.date.none.fl_str_mv 2021-08-11T13:00:42Z
2021-08-11T13:00:42Z
2021-08-11
2021
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Semina: Ciências Agrárias, v. 42, n. 3, p. 1981-2004, 2021.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133444
https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1981
identifier_str_mv Semina: Ciências Agrárias, v. 42, n. 3, p. 1981-2004, 2021.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133444
https://doi.org/10.5433/1679-0359.2021v42n3Supl1p1981
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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