Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-35982013000400002 http://hdl.handle.net/11449/4395 |
Resumo: | The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material were inferior when the rLAI imposed were lower, which resulted in differentiated forage production among the treatments. Tifton 85 pastures grazed by sheep in rotational stocking under tropical conditions with different rLAI show a modified sward structure over successive grazing cycles, mainly by alteration in the height and LAI of the plants at pre-grazing and by light interception post-grazing, which change the tiller population density. The residual leaf area index of 1.6 is the most suitable for pasture management for being equivalent to the heights of entrance and exit of animals on and from paddocks of 33 and 19 cm, respectively, which avoid great accumulation of dead material and excessive stem elongation, in addition to ensuring tillering in the sward. |
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Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areasLeaf area indexLight interceptionSheepRotational stockingtillersThe experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material were inferior when the rLAI imposed were lower, which resulted in differentiated forage production among the treatments. Tifton 85 pastures grazed by sheep in rotational stocking under tropical conditions with different rLAI show a modified sward structure over successive grazing cycles, mainly by alteration in the height and LAI of the plants at pre-grazing and by light interception post-grazing, which change the tiller population density. The residual leaf area index of 1.6 is the most suitable for pasture management for being equivalent to the heights of entrance and exit of animals on and from paddocks of 33 and 19 cm, respectively, which avoid great accumulation of dead material and excessive stem elongation, in addition to ensuring tillering in the sward.Universidade Estadual Paulista Júlio de Mesquita Filho Programa de Pós-graduação em ZootecniaUniversidade Estadual Paulista Júlio de Mesquita Filho Departamento de ZootecniaUniversidade Estadual Paulista Júlio de Mesquita Filho Programa de Pós-graduação em ZootecniaUniversidade Estadual Paulista Júlio de Mesquita Filho Departamento de ZootecniaSociedade Brasileira de ZootecniaUniversidade Estadual Paulista (Unesp)Silva, Wilton Ladeira da [UNESP]Galzerano, Leandro [UNESP]Reis, Ricardo Andrade [UNESP]Ruggieri, Ana Cláudia [UNESP]2014-05-20T13:18:13Z2014-05-20T13:18:13Z2013-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article238-245application/pdfhttp://dx.doi.org/10.1590/S1516-35982013000400002Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 42, n. 4, p. 238-245, 2013.1516-3598http://hdl.handle.net/11449/439510.1590/S1516-35982013000400002S1516-35982013000400002WOS:000317523500002S1516-35982013000400002.pdf8605438226392855SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Zootecnia0,337info:eu-repo/semantics/openAccess2024-06-07T18:43:06Zoai:repositorio.unesp.br:11449/4395Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:13:39.663833Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
title |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
spellingShingle |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas Silva, Wilton Ladeira da [UNESP] Leaf area index Light interception Sheep Rotational stocking tillers |
title_short |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
title_full |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
title_fullStr |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
title_full_unstemmed |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
title_sort |
Structural characteristics and forage mass of Tifton 85 pastures managed under three post-grazing residual leaf areas |
author |
Silva, Wilton Ladeira da [UNESP] |
author_facet |
Silva, Wilton Ladeira da [UNESP] Galzerano, Leandro [UNESP] Reis, Ricardo Andrade [UNESP] Ruggieri, Ana Cláudia [UNESP] |
author_role |
author |
author2 |
Galzerano, Leandro [UNESP] Reis, Ricardo Andrade [UNESP] Ruggieri, Ana Cláudia [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Wilton Ladeira da [UNESP] Galzerano, Leandro [UNESP] Reis, Ricardo Andrade [UNESP] Ruggieri, Ana Cláudia [UNESP] |
dc.subject.por.fl_str_mv |
Leaf area index Light interception Sheep Rotational stocking tillers |
topic |
Leaf area index Light interception Sheep Rotational stocking tillers |
description |
The experiment was carried out on Cynodon spp cv. Tifton 85 pastures grazed by sheep under rotational stocking, with the objective of evaluating the structural characteristics as well as the forage mass of the pastures subjected to three grazing intensities in successive cycles. Treatments were composed of three residual leaf area indices (rLAI; 2.4; 1.6 and 0.8), allocated in completely randomized blocks with seven replications, totaling 21 experimental units. Tiller population density, pasture height, leaf area index, forage morphological composition and pasture forage mass were evaluated. The rLAI modified the tiller population density, which increased linearly with decrease in the rLAI of the pastures. Dry masses of leaf blade, stem and dead material were inferior when the rLAI imposed were lower, which resulted in differentiated forage production among the treatments. Tifton 85 pastures grazed by sheep in rotational stocking under tropical conditions with different rLAI show a modified sward structure over successive grazing cycles, mainly by alteration in the height and LAI of the plants at pre-grazing and by light interception post-grazing, which change the tiller population density. The residual leaf area index of 1.6 is the most suitable for pasture management for being equivalent to the heights of entrance and exit of animals on and from paddocks of 33 and 19 cm, respectively, which avoid great accumulation of dead material and excessive stem elongation, in addition to ensuring tillering in the sward. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04-01 2014-05-20T13:18:13Z 2014-05-20T13:18:13Z |
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/10.1590/S1516-35982013000400002 Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 42, n. 4, p. 238-245, 2013. 1516-3598 http://hdl.handle.net/11449/4395 10.1590/S1516-35982013000400002 S1516-35982013000400002 WOS:000317523500002 S1516-35982013000400002.pdf 8605438226392855 |
url |
http://dx.doi.org/10.1590/S1516-35982013000400002 http://hdl.handle.net/11449/4395 |
identifier_str_mv |
Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 42, n. 4, p. 238-245, 2013. 1516-3598 10.1590/S1516-35982013000400002 S1516-35982013000400002 WOS:000317523500002 S1516-35982013000400002.pdf 8605438226392855 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia 0,337 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
238-245 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
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 |
|
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1808129175960158208 |