Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover

Detalhes bibliográficos
Autor(a) principal: Delagarde, Rémy
Data de Publicação: 2012
Tipo de documento: Artigo
Idioma: eng
por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/11394
Resumo: The objective of this work was to evaluate the influence of pasture composition and regrowth age on the relationship between feeding behavior and ruminal fermentation in dairy cows grazing perennial ryegrass with or without white clover. The experiment was carried out in a 2x2 factorial arrangement, with two sward types and two ages of regrowth. Swards of perennial ryegrass sown alone (PRG) and of perennial ryegrass mixed with white clover (GC) were evaluated. Twelve late‑lactation Holstein cows, fistulated at the rumen, were distributed in a 4x4 latin square experimental design with four 12‑day periods. Daily distribution of grazing was similar in the PRG and the GC swards, but the concentration of rumen volatile fatty acids (VFA) was higher and the proportion of propionate was lower on mixed swards during the day. Daily distributionof grazing was similar in pastures of different ages. However, in the oldest swards, rumen fluid pH increasedand VFA concentration decreased after evening milking. Time spent grazing does not influence ruminalfermentation, which depends on the changes that occur as different sward layers are grazed.
id EMBRAPA-4_597c1279fea8345c210b3141ee8277c5
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/11394
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white cloverForaging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white cloverLolium perenne; Trifolium repens; digestion; grazing; grazing timecomportamento ingestivo; digestão; Trifolium repensThe objective of this work was to evaluate the influence of pasture composition and regrowth age on the relationship between feeding behavior and ruminal fermentation in dairy cows grazing perennial ryegrass with or without white clover. The experiment was carried out in a 2x2 factorial arrangement, with two sward types and two ages of regrowth. Swards of perennial ryegrass sown alone (PRG) and of perennial ryegrass mixed with white clover (GC) were evaluated. Twelve late‑lactation Holstein cows, fistulated at the rumen, were distributed in a 4x4 latin square experimental design with four 12‑day periods. Daily distribution of grazing was similar in the PRG and the GC swards, but the concentration of rumen volatile fatty acids (VFA) was higher and the proportion of propionate was lower on mixed swards during the day. Daily distributionof grazing was similar in pastures of different ages. However, in the oldest swards, rumen fluid pH increasedand VFA concentration decreased after evening milking. Time spent grazing does not influence ruminalfermentation, which depends on the changes that occur as different sward layers are grazed.The objective of this work was to evaluate the influence of pasture composition and regrowth age on the relationship between feeding behavior and ruminal fermentation in dairy cows grazing perennial ryegrass with or without white clover. The experiment was carried out in a 2x2 factorial arrangement, with two sward types and two ages of regrowth. Swards of perennial ryegrass sown alone (PRG) and of perennial ryegrass mixed with white clover (GC) were evaluated. Twelve late‑lactation Holstein cows, fistulated at the rumen, were distributed in a 4x4 latin square experimental design with four 12‑day periods. Daily distribution of grazing was similar in the PRG and the GC swards, but the concentration of rumen volatile fatty acids (VFA) was higher and the proportion of propionate was lower on mixed swards during the day. Daily distribution of grazing was similar in pastures of different ages. However, in the oldest swards, rumen fluid pH increased and VFA concentration decreased after evening milking. Time spent grazing does not influence ruminal fermentation, which depends on the changes that occur as different sward layers are grazed. azevém perene consorciado com trevo branco (TB) – e duas  idades de rebrota. A distribuição diária do pastejo foi semelhante nos pastos AZ e TB, mas a concentração ruminal de ácidos graxos voláteis (AGV) foi maior e a proporção de propionato foi menor nos pastos em associação, ao longo do dia. A distribuição das atividades de pastejo foi semelhante nos pastos com idades diferentes. Entretanto, nos pastos mais velhos, o pH ruminal aumentou e a concentração de AGV diminuiu após a ordenha da tarde. O tempo de pastejo tem pouca influência sobre a fermentação ruminal, a qual depende de alterações que ocorrem à medida que os diferentes estratos são pastejados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraInstitute National de Recherche Agronomique, FranceInstitute National de Recherche Agronomique, FrançaDelagarde, Rémy2012-04-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/11394Pesquisa Agropecuaria Brasileira; v.47, n.3, mar. 2012; 458-465Pesquisa Agropecuária Brasileira; v.47, n.3, mar. 2012; 458-4651678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAengporhttps://seer.sct.embrapa.br/index.php/pab/article/view/11394/6834https://seer.sct.embrapa.br/index.php/pab/article/view/11394/7452https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/11394/6892info:eu-repo/semantics/openAccess2012-08-03T15:02:59Zoai:ojs.seer.sct.embrapa.br:article/11394Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-08-03T15:02:59Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
title Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
spellingShingle Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
Delagarde, Rémy
Lolium perenne; Trifolium repens; digestion; grazing; grazing time
comportamento ingestivo; digestão; Trifolium repens
title_short Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
title_full Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
title_fullStr Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
title_full_unstemmed Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
title_sort Foraging behavior and ruminal fermentation of dairy cows grazing ryegrass pasture alone or with white clover
author Delagarde, Rémy
author_facet Delagarde, Rémy
author_role author
dc.contributor.none.fl_str_mv Institute National de Recherche Agronomique, France
Institute National de Recherche Agronomique, França
dc.contributor.author.fl_str_mv Delagarde, Rémy
dc.subject.por.fl_str_mv Lolium perenne; Trifolium repens; digestion; grazing; grazing time
comportamento ingestivo; digestão; Trifolium repens
topic Lolium perenne; Trifolium repens; digestion; grazing; grazing time
comportamento ingestivo; digestão; Trifolium repens
description The objective of this work was to evaluate the influence of pasture composition and regrowth age on the relationship between feeding behavior and ruminal fermentation in dairy cows grazing perennial ryegrass with or without white clover. The experiment was carried out in a 2x2 factorial arrangement, with two sward types and two ages of regrowth. Swards of perennial ryegrass sown alone (PRG) and of perennial ryegrass mixed with white clover (GC) were evaluated. Twelve late‑lactation Holstein cows, fistulated at the rumen, were distributed in a 4x4 latin square experimental design with four 12‑day periods. Daily distribution of grazing was similar in the PRG and the GC swards, but the concentration of rumen volatile fatty acids (VFA) was higher and the proportion of propionate was lower on mixed swards during the day. Daily distributionof grazing was similar in pastures of different ages. However, in the oldest swards, rumen fluid pH increasedand VFA concentration decreased after evening milking. Time spent grazing does not influence ruminalfermentation, which depends on the changes that occur as different sward layers are grazed.
publishDate 2012
dc.date.none.fl_str_mv 2012-04-23
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/11394
url https://seer.sct.embrapa.br/index.php/pab/article/view/11394
dc.language.iso.fl_str_mv eng
por
language eng
por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/11394/6834
https://seer.sct.embrapa.br/index.php/pab/article/view/11394/7452
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/11394/6892
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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.47, n.3, mar. 2012; 458-465
Pesquisa Agropecuária Brasileira; v.47, n.3, mar. 2012; 458-465
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
_version_ 1793416657552539648

Registros relacionados