Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows

Detalhes bibliográficos
Autor(a) principal: Pulido, Rubén
Data de Publicação: 2000
Outros Autores: Leaver, John David
Tipo de documento: Artigo
Idioma: spa
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/5861
Resumo: An experiment was carried out in order to describe the ruminal degradation characteristics of forages, in herbage mass samples (FD) and in simulated grazing samples (FS), obtained at two sward heights (high and low) from a permanent pasture (Lolium perenne L.). The degradation kinetics of the samples was studied using in situ dacron bags. Data collected were fitted according to an exponential equation. The soluble fraction (g/kg DM) of the dry matter (DM) (299 vs. 351, s.e.d.= 5.4), of the organic matter (OM) (304 vs. 376, s.e.d.= 3.3) and of the nitrogen (250 vs. 301, s.e.d.= 6.4) were significantly higher (P < 0.05) for simulated samples than for the herbage mass samples. The potential degradability (g/kg DM) of DM, OM and nitrogen was significantly higher on FS compared with the FD (P < 0.05). The effective degradability for the FS samples was greater than for FD samples, either for DM (474 vs. 508, s.e.d.= 13.0), OM (490 vs. 529, s.e.d.= 11.6), or nitrogen (351 vs. 419, s.e.d.= 10.0). A significant greater effect (P < 0.05) of the low sward height on the effective degradability was found for the nitrogen only.
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spelling Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cowsDegradabilidad ruminal del forraje disponible en la pradera y del aparentemente consumido por vacas lecherasRumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cowsforages sample; pasture; cattle; rumen degradationmuestras de forraje; pastura; bovino; degradación ruminalforages sample; pasture; cattle; rumen degradation.An experiment was carried out in order to describe the ruminal degradation characteristics of forages, in herbage mass samples (FD) and in simulated grazing samples (FS), obtained at two sward heights (high and low) from a permanent pasture (Lolium perenne L.). The degradation kinetics of the samples was studied using in situ dacron bags. Data collected were fitted according to an exponential equation. The soluble fraction (g/kg DM) of the dry matter (DM) (299 vs. 351, s.e.d.= 5.4), of the organic matter (OM) (304 vs. 376, s.e.d.= 3.3) and of the nitrogen (250 vs. 301, s.e.d.= 6.4) were significantly higher (P < 0.05) for simulated samples than for the herbage mass samples. The potential degradability (g/kg DM) of DM, OM and nitrogen was significantly higher on FS compared with the FD (P < 0.05). The effective degradability for the FS samples was greater than for FD samples, either for DM (474 vs. 508, s.e.d.= 13.0), OM (490 vs. 529, s.e.d.= 11.6), or nitrogen (351 vs. 419, s.e.d.= 10.0). A significant greater effect (P < 0.05) of the low sward height on the effective degradability was found for the nitrogen only.Se evaluó la dinámica degradativa de forrajes, en muestras de una pradera permanente (Lolium perenne L.), manejadas a dos alturas de pradera, alta y baja. Las muestras consistieron en forraje disponible a ras de suelo (FD) y en forraje aparentemente consumido por vacas lecheras en pastoreo continuo (FS). La degradabilidad ruminal se estudió usando la técnica de las bolsas de dacrón y los datos fueron ajustados a una ecuación exponencial. La fracción soluble (g/kg MS), de la materia seca (MS) (299 v/s 351, s.e.d.= 5,4), de la materia organica (MO) (304 v/s 376, s.e.d.= 3,3) y del nitrógeno (250 v/s 301, s.e.d.= 6,4), fueron significativamente mayores (P < 0,05) en muestras de FS que en muestras de FD. La degradabilidad potencial (g/kg MS) de MS, MO y nitrógeno, fue significativamente mayor (P < 0,05) en las muestras de FS, que en las muestras de FD. La degradabilidad efectiva fue mayor en las muestras de FS, que en las muestras de FD, tanto para la MS (474 v/s 508, s.e.d.= 13,0), MO (490 v/s 529, s.e.d.= 11,6) y nitrógeno (351 v/s 419, s.e.d.= 10,0). Respecto del factor altura, sólo se encontró un efecto significativo en la degradabilidad efectiva en el nitrógeno, en favor de la altura baja (365 v/s 406, s.e.d.= 10,0).An experiment was carried out in order to describe the ruminal degradation characteristics of forages, in herbage mass samples (FD) and in simulated grazing samples (FS), obtained at two sward heights (high and low) from a permanent pasture (Lolium perenne L.). The degradation kinetics of the samples was studied using in situ dacron bags. Data collected were fitted according to an exponential equation. The soluble fraction (g/kg DM) of the dry matter (DM) (299 vs. 351, s.e.d.= 5.4), of the organic matter (OM) (304 vs. 376, s.e.d.= 3.3) and of the nitrogen (250 vs. 301, s.e.d.= 6.4) were significantly higher (P < 0.05) for simulated samples than for the herbage mass samples. The potential degradability (g/kg DM) of DM, OM and nitrogen was significantly higher on FS compared with the FD (P < 0.05). The effective degradability for the FS samples was greater than for FD samples, either for DM (474 vs. 508, s.e.d.= 13.0), OM (490 vs. 529, s.e.d.= 11.6), or nitrogen (351 vs. 419, s.e.d.= 10.0). A significant greater effect (P < 0.05) of the low sward height on the effective degradability was found for the nitrogen only.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPulido, RubénLeaver, John David2000-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5861Pesquisa Agropecuaria Brasileira; v.35, n.5, maio 2000; 1003-1009Pesquisa Agropecuária Brasileira; v.35, n.5, maio 2000; 1003-10091678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAspahttps://seer.sct.embrapa.br/index.php/pab/article/view/5861/2965info:eu-repo/semantics/openAccess2014-08-18T20:35:04Zoai:ojs.seer.sct.embrapa.br:article/5861Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-18T20:35:04Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
Degradabilidad ruminal del forraje disponible en la pradera y del aparentemente consumido por vacas lecheras
Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
title Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
spellingShingle Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
Pulido, Rubén
forages sample; pasture; cattle; rumen degradation
muestras de forraje; pastura; bovino; degradación ruminal
forages sample; pasture; cattle; rumen degradation.
title_short Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
title_full Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
title_fullStr Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
title_full_unstemmed Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
title_sort Rumen degradation characteristics of the herbage mass samples and the simulated grazing samples for dairy cows
author Pulido, Rubén
author_facet Pulido, Rubén
Leaver, John David
author_role author
author2 Leaver, John David
author2_role author
dc.contributor.none.fl_str_mv


dc.contributor.author.fl_str_mv Pulido, Rubén
Leaver, John David
dc.subject.por.fl_str_mv forages sample; pasture; cattle; rumen degradation
muestras de forraje; pastura; bovino; degradación ruminal
forages sample; pasture; cattle; rumen degradation.
topic forages sample; pasture; cattle; rumen degradation
muestras de forraje; pastura; bovino; degradación ruminal
forages sample; pasture; cattle; rumen degradation.
description An experiment was carried out in order to describe the ruminal degradation characteristics of forages, in herbage mass samples (FD) and in simulated grazing samples (FS), obtained at two sward heights (high and low) from a permanent pasture (Lolium perenne L.). The degradation kinetics of the samples was studied using in situ dacron bags. Data collected were fitted according to an exponential equation. The soluble fraction (g/kg DM) of the dry matter (DM) (299 vs. 351, s.e.d.= 5.4), of the organic matter (OM) (304 vs. 376, s.e.d.= 3.3) and of the nitrogen (250 vs. 301, s.e.d.= 6.4) were significantly higher (P < 0.05) for simulated samples than for the herbage mass samples. The potential degradability (g/kg DM) of DM, OM and nitrogen was significantly higher on FS compared with the FD (P < 0.05). The effective degradability for the FS samples was greater than for FD samples, either for DM (474 vs. 508, s.e.d.= 13.0), OM (490 vs. 529, s.e.d.= 11.6), or nitrogen (351 vs. 419, s.e.d.= 10.0). A significant greater effect (P < 0.05) of the low sward height on the effective degradability was found for the nitrogen only.
publishDate 2000
dc.date.none.fl_str_mv 2000-05-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5861
url https://seer.sct.embrapa.br/index.php/pab/article/view/5861
dc.language.iso.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5861/2965
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.35, n.5, maio 2000; 1003-1009
Pesquisa Agropecuária Brasileira; v.35, n.5, maio 2000; 1003-1009
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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