Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5433/1679-0359.2013v34n6Supl2p4145 http://hdl.handle.net/11449/117584 |
Resumo: | The objective of this study was to analyze the production of dry mass, forage accumulation rate and the structural composition of Brachiaria brizantha cv. Xaraes pastures, managed under different grazing heights in continuous stocking. The experimental area was 12 hectares, divided in paddocks of one hectare each. The treatments were 15, 30, 45 and 60 cm of defoliation heights. Nellore steers were used to reach the desired heights. Every 28 days four cut samples and eight visual samples were collected for comparative performance in the experimental plots. Two grazing exclusion cages were used per treatment to estimate accumulation rates kg.ha(-1) DM. The cut material was taken to the laboratory for separation of the botanical components (green leaf, stem and senescent material), weighing and determination of dry matter. The experimental design was the completely randomized with three replicates. There were treatments effects at all seasons for the production of total mass, except in the spring. In summer and spring seasons it was observed the highest values for leaf blades (1.100 kg DM.ha(-1)). In the winter, the highest values of senescent material was observed, as expected. The average accumulation showed no significant difference among the treatments, except for stem and total mass in the summer and stem in the fall. The tillers were heavier and higher values for number of green leaves per tiller occurred in the fall, but for senescent leaves per tiller ocurred in the winter. Swards grazed at heights between 45 and 60 cm of defoliation, had good production of forage mass and leaf constituent. |
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Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejoForage production and structural composition of pastures of Xaraes grass managed in different grazing heightsAccumulation ratedefoliationforage massmorphological structuresseasonal productionThe objective of this study was to analyze the production of dry mass, forage accumulation rate and the structural composition of Brachiaria brizantha cv. Xaraes pastures, managed under different grazing heights in continuous stocking. The experimental area was 12 hectares, divided in paddocks of one hectare each. The treatments were 15, 30, 45 and 60 cm of defoliation heights. Nellore steers were used to reach the desired heights. Every 28 days four cut samples and eight visual samples were collected for comparative performance in the experimental plots. Two grazing exclusion cages were used per treatment to estimate accumulation rates kg.ha(-1) DM. The cut material was taken to the laboratory for separation of the botanical components (green leaf, stem and senescent material), weighing and determination of dry matter. The experimental design was the completely randomized with three replicates. There were treatments effects at all seasons for the production of total mass, except in the spring. In summer and spring seasons it was observed the highest values for leaf blades (1.100 kg DM.ha(-1)). In the winter, the highest values of senescent material was observed, as expected. The average accumulation showed no significant difference among the treatments, except for stem and total mass in the summer and stem in the fall. The tillers were heavier and higher values for number of green leaves per tiller occurred in the fall, but for senescent leaves per tiller ocurred in the winter. Swards grazed at heights between 45 and 60 cm of defoliation, had good production of forage mass and leaf constituent.Univ Estadual Londrina, Londrina, PR, BrazilUniv Estadual Londrina, Dept Zootecnia, Londrina, PR, BrazilUNESP, Fac Ciencias Agr & Vet, Programa Posgrad Zootecnia, Jaboticabal, SP, BrazilUniv Estadual Londrina, Programa Posgrad Ciencia Anim, Londrina, PR, BrazilProd CNPq, Londrina, PR, BrazilUNESP, Fac Ciencias Agr & Vet, Programa Posgrad Zootecnia, Jaboticabal, SP, BrazilUniv Estadual LondrinaUniversidade Estadual de Londrina (UEL)Universidade Estadual Paulista (Unesp)Prod CNPqCastro, Leticia MariaAlves de Freitas Barbosa, Marco AurelioBarbero, Rondineli Pavezzi [UNESP]Brito, Vinicius CampachiSaad, Rafael MantegazzaAzambuja Ribeiro, Edson Luis deMizubuti, Ivone YurikaBridi, Ana Maria2015-03-18T15:56:28Z2015-03-18T15:56:28Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4145-4155application/pdfhttp://dx.doi.org/10.5433/1679-0359.2013v34n6Supl2p4145Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 34, n. 6, p. 4145-4155, 2013.1676-546Xhttp://hdl.handle.net/11449/11758410.5433/1679-0359.2013v34n6Supl2p4145WOS:000340333600044WOS000340333600044.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporSemina-ciencias Agrarias0.349info:eu-repo/semantics/openAccess2024-06-07T18:40:38Zoai:repositorio.unesp.br:11449/117584Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:41:40.792842Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo Forage production and structural composition of pastures of Xaraes grass managed in different grazing heights |
title |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo |
spellingShingle |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo Castro, Leticia Maria Accumulation rate defoliation forage mass morphological structures seasonal production |
title_short |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo |
title_full |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo |
title_fullStr |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo |
title_full_unstemmed |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo |
title_sort |
Produção de forragem e composição estrutural de pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo |
author |
Castro, Leticia Maria |
author_facet |
Castro, Leticia Maria Alves de Freitas Barbosa, Marco Aurelio Barbero, Rondineli Pavezzi [UNESP] Brito, Vinicius Campachi Saad, Rafael Mantegazza Azambuja Ribeiro, Edson Luis de Mizubuti, Ivone Yurika Bridi, Ana Maria |
author_role |
author |
author2 |
Alves de Freitas Barbosa, Marco Aurelio Barbero, Rondineli Pavezzi [UNESP] Brito, Vinicius Campachi Saad, Rafael Mantegazza Azambuja Ribeiro, Edson Luis de Mizubuti, Ivone Yurika Bridi, Ana Maria |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Londrina (UEL) Universidade Estadual Paulista (Unesp) Prod CNPq |
dc.contributor.author.fl_str_mv |
Castro, Leticia Maria Alves de Freitas Barbosa, Marco Aurelio Barbero, Rondineli Pavezzi [UNESP] Brito, Vinicius Campachi Saad, Rafael Mantegazza Azambuja Ribeiro, Edson Luis de Mizubuti, Ivone Yurika Bridi, Ana Maria |
dc.subject.por.fl_str_mv |
Accumulation rate defoliation forage mass morphological structures seasonal production |
topic |
Accumulation rate defoliation forage mass morphological structures seasonal production |
description |
The objective of this study was to analyze the production of dry mass, forage accumulation rate and the structural composition of Brachiaria brizantha cv. Xaraes pastures, managed under different grazing heights in continuous stocking. The experimental area was 12 hectares, divided in paddocks of one hectare each. The treatments were 15, 30, 45 and 60 cm of defoliation heights. Nellore steers were used to reach the desired heights. Every 28 days four cut samples and eight visual samples were collected for comparative performance in the experimental plots. Two grazing exclusion cages were used per treatment to estimate accumulation rates kg.ha(-1) DM. The cut material was taken to the laboratory for separation of the botanical components (green leaf, stem and senescent material), weighing and determination of dry matter. The experimental design was the completely randomized with three replicates. There were treatments effects at all seasons for the production of total mass, except in the spring. In summer and spring seasons it was observed the highest values for leaf blades (1.100 kg DM.ha(-1)). In the winter, the highest values of senescent material was observed, as expected. The average accumulation showed no significant difference among the treatments, except for stem and total mass in the summer and stem in the fall. The tillers were heavier and higher values for number of green leaves per tiller occurred in the fall, but for senescent leaves per tiller ocurred in the winter. Swards grazed at heights between 45 and 60 cm of defoliation, had good production of forage mass and leaf constituent. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 2015-03-18T15:56:28Z 2015-03-18T15:56:28Z |
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://dx.doi.org/10.5433/1679-0359.2013v34n6Supl2p4145 Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 34, n. 6, p. 4145-4155, 2013. 1676-546X http://hdl.handle.net/11449/117584 10.5433/1679-0359.2013v34n6Supl2p4145 WOS:000340333600044 WOS000340333600044.pdf |
url |
http://dx.doi.org/10.5433/1679-0359.2013v34n6Supl2p4145 http://hdl.handle.net/11449/117584 |
identifier_str_mv |
Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 34, n. 6, p. 4145-4155, 2013. 1676-546X 10.5433/1679-0359.2013v34n6Supl2p4145 WOS:000340333600044 WOS000340333600044.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Semina-ciencias Agrarias 0.349 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4145-4155 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Estadual Londrina |
publisher.none.fl_str_mv |
Univ Estadual Londrina |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128551027736576 |