Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal

Detalhes bibliográficos
Autor(a) principal: Galvão, Lurdes
Data de Publicação: 2008
Outros Autores: Guedes, Cristina M., Rodrigues, M.A.M., Silva, S.R., Valentim, Ramiro, Moreira, Olga, Ribeiro, José Ramalho, Sequeira, C.A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/6015
Resumo: In the Northeast region of Portugal hays from natural pastures are traditionally used as the main feed during the period of drought and the evaluation of its nutritive value is essential. The aim of this study was to predict the apparent organic matter digestibility (OMD) of 21 hays from natural pastures based on chemical composition, pepsin-cellulase solubility of organic matter (OMS) and in vitro organic matter digestibility. Chemical composition of hays showed a wide range of values and acid detergent lignin (ADL) was the component that presented the highest variation (CV = 18.4%). The OMD varied between 516 and 658 g/kg OM. The best single OMD predictor was OMS (RSD = 2.8%, R2 = 0.52, P<0.001). Using multiple regression to predict OMD, the variables included in the model were OMS and ADL (OMD = 21.51 + 0.94 OMS – 0.83 ADL; RSD = 2.75%; R2 = 0.54; P<0.0001). According to principal component analysis (PCA) hays were divided in 3 groups and the multiple regression established for the larger group of hays (n=10) was: OMD = 4.13 + 0.85 OMS – 1.03 ADL; RSD = 2.13%, R2 = 0.77, P<0.0001. The OMS method was superior to chemical composition and to the in vitro rumen fluid method in predicting OMD of hays from natural pastures. Results from PCA suggested that it may be useful to group these hays according to its chemical composition to accurately predict OMD.
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spelling Prediction of apparent digestibility of hays from natural pastures of the Northeast region of PortugalIn vitro digestibilityIn vivo digestibilityMeadow haysPepsin-cellulaseIn the Northeast region of Portugal hays from natural pastures are traditionally used as the main feed during the period of drought and the evaluation of its nutritive value is essential. The aim of this study was to predict the apparent organic matter digestibility (OMD) of 21 hays from natural pastures based on chemical composition, pepsin-cellulase solubility of organic matter (OMS) and in vitro organic matter digestibility. Chemical composition of hays showed a wide range of values and acid detergent lignin (ADL) was the component that presented the highest variation (CV = 18.4%). The OMD varied between 516 and 658 g/kg OM. The best single OMD predictor was OMS (RSD = 2.8%, R2 = 0.52, P<0.001). Using multiple regression to predict OMD, the variables included in the model were OMS and ADL (OMD = 21.51 + 0.94 OMS – 0.83 ADL; RSD = 2.75%; R2 = 0.54; P<0.0001). According to principal component analysis (PCA) hays were divided in 3 groups and the multiple regression established for the larger group of hays (n=10) was: OMD = 4.13 + 0.85 OMS – 1.03 ADL; RSD = 2.13%, R2 = 0.77, P<0.0001. The OMS method was superior to chemical composition and to the in vitro rumen fluid method in predicting OMD of hays from natural pastures. Results from PCA suggested that it may be useful to group these hays according to its chemical composition to accurately predict OMD.Fundación CIPAVBiblioteca Digital do IPBGalvão, LurdesGuedes, Cristina M.Rodrigues, M.A.M.Silva, S.R.Valentim, RamiroMoreira, OlgaRibeiro, José RamalhoSequeira, C.A.2011-08-19T14:09:21Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/6015engGalvão, Lurdes; Guedes, C.M.; Rodrigues, M.A.M.; Silva, S.R.; Valentim, Ramiro; Moreira, O.C.; Ribeiro, J.R.; Sequeira, C.A. (2008). Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal. Livestock Research for Rural Development. ISSN 0121-3784. 20:80121-3784info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:11:43Zoai:bibliotecadigital.ipb.pt:10198/6015Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:57:06.341680Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
title Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
spellingShingle Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
Galvão, Lurdes
In vitro digestibility
In vivo digestibility
Meadow hays
Pepsin-cellulase
title_short Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
title_full Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
title_fullStr Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
title_full_unstemmed Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
title_sort Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal
author Galvão, Lurdes
author_facet Galvão, Lurdes
Guedes, Cristina M.
Rodrigues, M.A.M.
Silva, S.R.
Valentim, Ramiro
Moreira, Olga
Ribeiro, José Ramalho
Sequeira, C.A.
author_role author
author2 Guedes, Cristina M.
Rodrigues, M.A.M.
Silva, S.R.
Valentim, Ramiro
Moreira, Olga
Ribeiro, José Ramalho
Sequeira, C.A.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Galvão, Lurdes
Guedes, Cristina M.
Rodrigues, M.A.M.
Silva, S.R.
Valentim, Ramiro
Moreira, Olga
Ribeiro, José Ramalho
Sequeira, C.A.
dc.subject.por.fl_str_mv In vitro digestibility
In vivo digestibility
Meadow hays
Pepsin-cellulase
topic In vitro digestibility
In vivo digestibility
Meadow hays
Pepsin-cellulase
description In the Northeast region of Portugal hays from natural pastures are traditionally used as the main feed during the period of drought and the evaluation of its nutritive value is essential. The aim of this study was to predict the apparent organic matter digestibility (OMD) of 21 hays from natural pastures based on chemical composition, pepsin-cellulase solubility of organic matter (OMS) and in vitro organic matter digestibility. Chemical composition of hays showed a wide range of values and acid detergent lignin (ADL) was the component that presented the highest variation (CV = 18.4%). The OMD varied between 516 and 658 g/kg OM. The best single OMD predictor was OMS (RSD = 2.8%, R2 = 0.52, P<0.001). Using multiple regression to predict OMD, the variables included in the model were OMS and ADL (OMD = 21.51 + 0.94 OMS – 0.83 ADL; RSD = 2.75%; R2 = 0.54; P<0.0001). According to principal component analysis (PCA) hays were divided in 3 groups and the multiple regression established for the larger group of hays (n=10) was: OMD = 4.13 + 0.85 OMS – 1.03 ADL; RSD = 2.13%, R2 = 0.77, P<0.0001. The OMS method was superior to chemical composition and to the in vitro rumen fluid method in predicting OMD of hays from natural pastures. Results from PCA suggested that it may be useful to group these hays according to its chemical composition to accurately predict OMD.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2011-08-19T14:09:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10198/6015
url http://hdl.handle.net/10198/6015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Galvão, Lurdes; Guedes, C.M.; Rodrigues, M.A.M.; Silva, S.R.; Valentim, Ramiro; Moreira, O.C.; Ribeiro, J.R.; Sequeira, C.A. (2008). Prediction of apparent digestibility of hays from natural pastures of the Northeast region of Portugal. Livestock Research for Rural Development. ISSN 0121-3784. 20:8
0121-3784
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 Fundación CIPAV
publisher.none.fl_str_mv Fundación CIPAV
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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