Defoliation patterns in signal grass tillers with varying heights in the same pasture

Detalhes bibliográficos
Autor(a) principal: Santos, Manoel Eduardo Rozalino
Data de Publicação: 2013
Outros Autores: Fonseca, Dilermando Miranda da, Silva, Guilherme Porte, Braz, Thiago Gomes dos Santos, Gomes, Virgilio Mesquita, Silva, Simone Pedro da [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4025/actascianimsci.v35i3.14376
http://hdl.handle.net/11449/109672
Resumo: The experiment was carried out to evaluate the patterns of defoliation in plants of various heights in the same pasture of Brachiaria decumbens cv. Basilisk under continuous stocking with cattle. Four plant heights were evaluated (10, 20, 30 and 40 cm) in the same managed sward, with mean height equal to 25 cm. A randomized blocks design was used, with two replications. Defoliation frequency increased linearly along with plant height in the same pasture. Defoliation intensity, number of defoliations in leaf blade and percentage of leaf blade grazed per tiller also increased linearly along with plant height. The defoliation interval decreased linearly according to plant height. The quadratic model was adequately fitted into grazing efficiency data, reaching the highest value (98%) at the sward site with 35 cm plants. The percentage variation in signal grass height showed a negative linear response with initial plant height. The structure of the pasture, characterized by the diversity in plant heights, is simultaneously the cause and consequence of the variability in defoliation patterns in individual tillers, which occur on the horizontal plane of the pasture.
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spelling Defoliation patterns in signal grass tillers with varying heights in the same pasturePadrões de desfolhação em perfilhos de capim-braquiária com alturas variáveis no mesmo pastoBrachiaria decumbensperda de forragempastejoestrutura horizontal do pastoBrachiaria decumbensforage lossesgrazinghorizontal pasture swardThe experiment was carried out to evaluate the patterns of defoliation in plants of various heights in the same pasture of Brachiaria decumbens cv. Basilisk under continuous stocking with cattle. Four plant heights were evaluated (10, 20, 30 and 40 cm) in the same managed sward, with mean height equal to 25 cm. A randomized blocks design was used, with two replications. Defoliation frequency increased linearly along with plant height in the same pasture. Defoliation intensity, number of defoliations in leaf blade and percentage of leaf blade grazed per tiller also increased linearly along with plant height. The defoliation interval decreased linearly according to plant height. The quadratic model was adequately fitted into grazing efficiency data, reaching the highest value (98%) at the sward site with 35 cm plants. The percentage variation in signal grass height showed a negative linear response with initial plant height. The structure of the pasture, characterized by the diversity in plant heights, is simultaneously the cause and consequence of the variability in defoliation patterns in individual tillers, which occur on the horizontal plane of the pasture.O experimento foi conduzido para avaliar os padrões de desfolhação em plantas com alturas variáveis no mesmo pasto de Brachiaria decumbens cv. Basilisk sob lotação contínua com bovinos. Foram avaliadas quatro alturas de plantas (10, 20, 30 e 40 cm) no mesmo pasto manejado com altura média de 25 cm. Adotou-se o delineamento em blocos ao acaso com duas repetições. A frequência de desfolhação aumentou linearmente com a altura da planta no mesmo pasto. A intensidade de desfolhação, o número de desfolhações na lâmina foliar e o percentual de lâmina foliar pastejada por perfilho também incrementaram de forma linear com a altura da planta. O intervalo de desfolhação diminuiu linearmente com a altura da planta. O modelo quadrático foi ajustado adequadamente aos dados de eficiência de pastejo, obtendo-se o valor máximo (98%) no local do pasto com plantas de 35 cm. A variação percentual na altura do capim-braquiária apresentou resposta linear negativa com a altura inicial da planta. A estrutura do pasto, caracterizada pela sua diversidade de alturas de plantas, é, concomitantemente, causa e consequência da variabilidade dos padrões de desfolhação em perfilhos individuais que ocorrem no plano horizontal do pasto.Universidade Federal de Uberlândia Faculdade de Medicina VeterináriaUniversidade Federal de Viçosa Departamento de ZootecniaUniversidade Estadual Paulista Júlio de Mesquita FilhoUniversidade Estadual Paulista Júlio de Mesquita FilhoEditora da Universidade Estadual de Maringá (EDUEM)Universidade Federal de Uberlândia (UFU)Universidade Federal de Viçosa (UFV)Universidade Estadual Paulista (Unesp)Santos, Manoel Eduardo RozalinoFonseca, Dilermando Miranda daSilva, Guilherme PorteBraz, Thiago Gomes dos SantosGomes, Virgilio MesquitaSilva, Simone Pedro da [UNESP]2014-09-30T18:18:33Z2014-09-30T18:18:33Z2013-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article259-265application/pdfhttp://dx.doi.org/10.4025/actascianimsci.v35i3.14376Acta Scientiarum. Animal Sciences. Editora da Universidade Estadual de Maringá - EDUEM, v. 35, n. 3, p. 259-265, 2013.1807-86721806-2636http://hdl.handle.net/11449/10967210.4025/actascianimsci.v35i3.14376S1807-867220130003000062-s2.0-84880065492S1807-86722013000300006.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Scientiarum: Animal Sciences0,250info:eu-repo/semantics/openAccess2024-06-07T18:44:29Zoai:repositorio.unesp.br:11449/109672Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:40:19.885766Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Defoliation patterns in signal grass tillers with varying heights in the same pasture
Padrões de desfolhação em perfilhos de capim-braquiária com alturas variáveis no mesmo pasto
title Defoliation patterns in signal grass tillers with varying heights in the same pasture
spellingShingle Defoliation patterns in signal grass tillers with varying heights in the same pasture
Santos, Manoel Eduardo Rozalino
Brachiaria decumbens
perda de forragem
pastejo
estrutura horizontal do pasto
Brachiaria decumbens
forage losses
grazing
horizontal pasture sward
title_short Defoliation patterns in signal grass tillers with varying heights in the same pasture
title_full Defoliation patterns in signal grass tillers with varying heights in the same pasture
title_fullStr Defoliation patterns in signal grass tillers with varying heights in the same pasture
title_full_unstemmed Defoliation patterns in signal grass tillers with varying heights in the same pasture
title_sort Defoliation patterns in signal grass tillers with varying heights in the same pasture
author Santos, Manoel Eduardo Rozalino
author_facet Santos, Manoel Eduardo Rozalino
Fonseca, Dilermando Miranda da
Silva, Guilherme Porte
Braz, Thiago Gomes dos Santos
Gomes, Virgilio Mesquita
Silva, Simone Pedro da [UNESP]
author_role author
author2 Fonseca, Dilermando Miranda da
Silva, Guilherme Porte
Braz, Thiago Gomes dos Santos
Gomes, Virgilio Mesquita
Silva, Simone Pedro da [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Uberlândia (UFU)
Universidade Federal de Viçosa (UFV)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Santos, Manoel Eduardo Rozalino
Fonseca, Dilermando Miranda da
Silva, Guilherme Porte
Braz, Thiago Gomes dos Santos
Gomes, Virgilio Mesquita
Silva, Simone Pedro da [UNESP]
dc.subject.por.fl_str_mv Brachiaria decumbens
perda de forragem
pastejo
estrutura horizontal do pasto
Brachiaria decumbens
forage losses
grazing
horizontal pasture sward
topic Brachiaria decumbens
perda de forragem
pastejo
estrutura horizontal do pasto
Brachiaria decumbens
forage losses
grazing
horizontal pasture sward
description The experiment was carried out to evaluate the patterns of defoliation in plants of various heights in the same pasture of Brachiaria decumbens cv. Basilisk under continuous stocking with cattle. Four plant heights were evaluated (10, 20, 30 and 40 cm) in the same managed sward, with mean height equal to 25 cm. A randomized blocks design was used, with two replications. Defoliation frequency increased linearly along with plant height in the same pasture. Defoliation intensity, number of defoliations in leaf blade and percentage of leaf blade grazed per tiller also increased linearly along with plant height. The defoliation interval decreased linearly according to plant height. The quadratic model was adequately fitted into grazing efficiency data, reaching the highest value (98%) at the sward site with 35 cm plants. The percentage variation in signal grass height showed a negative linear response with initial plant height. The structure of the pasture, characterized by the diversity in plant heights, is simultaneously the cause and consequence of the variability in defoliation patterns in individual tillers, which occur on the horizontal plane of the pasture.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-01
2014-09-30T18:18:33Z
2014-09-30T18:18:33Z
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/10.4025/actascianimsci.v35i3.14376
Acta Scientiarum. Animal Sciences. Editora da Universidade Estadual de Maringá - EDUEM, v. 35, n. 3, p. 259-265, 2013.
1807-8672
1806-2636
http://hdl.handle.net/11449/109672
10.4025/actascianimsci.v35i3.14376
S1807-86722013000300006
2-s2.0-84880065492
S1807-86722013000300006.pdf
url http://dx.doi.org/10.4025/actascianimsci.v35i3.14376
http://hdl.handle.net/11449/109672
identifier_str_mv Acta Scientiarum. Animal Sciences. Editora da Universidade Estadual de Maringá - EDUEM, v. 35, n. 3, p. 259-265, 2013.
1807-8672
1806-2636
10.4025/actascianimsci.v35i3.14376
S1807-86722013000300006
2-s2.0-84880065492
S1807-86722013000300006.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Acta Scientiarum: Animal Sciences
0,250
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 259-265
application/pdf
dc.publisher.none.fl_str_mv Editora da Universidade Estadual de Maringá (EDUEM)
publisher.none.fl_str_mv Editora da Universidade Estadual de Maringá (EDUEM)
dc.source.none.fl_str_mv SciELO
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
_version_ 1808129449372155904

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