Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400011 |
Resumo: | The objective of this study was to assess the accumulation and morphological composition of forage in Aruana Guineagrass (Panicum maximum cv. Aruana) swards subjected to intermittent stocking with sheep. Experimental treatments when grazing was introduced included low (95%) and high (98%) incident light interception and low (10 cm)- and high (15 cm)-residue height and were allocated to experimental units (196 m² fenced areas) in a completely randomized 2 × 2 factorial arrangement with three replicates. Treatments were imposed between January and May 2009. More frequent grazing cycles (95% light interception) resulted in better control of stem elongation, lower proportion of dead plant material and invasive plants, and higher proportions of leaf blades in the grazing strata, compared with less frequent grazing cycles (98% light interception). Grass managed with 95% light interception combined with 10 and 15 cm post-grazing height and grass managed at 98% light interception combined with 15 cm post-grazing height did not show differences in forage accumulation rate. These results indicate that more frequent (30 cm pre-grazing height) and less severe (15 cm post-grazing height) grazing cycles provided animals with high leaf blade mass and low stem mass forage. |
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Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of foragegrazing managementlight interceptionPanicum maximumpost-grazing heightThe objective of this study was to assess the accumulation and morphological composition of forage in Aruana Guineagrass (Panicum maximum cv. Aruana) swards subjected to intermittent stocking with sheep. Experimental treatments when grazing was introduced included low (95%) and high (98%) incident light interception and low (10 cm)- and high (15 cm)-residue height and were allocated to experimental units (196 m² fenced areas) in a completely randomized 2 × 2 factorial arrangement with three replicates. Treatments were imposed between January and May 2009. More frequent grazing cycles (95% light interception) resulted in better control of stem elongation, lower proportion of dead plant material and invasive plants, and higher proportions of leaf blades in the grazing strata, compared with less frequent grazing cycles (98% light interception). Grass managed with 95% light interception combined with 10 and 15 cm post-grazing height and grass managed at 98% light interception combined with 15 cm post-grazing height did not show differences in forage accumulation rate. These results indicate that more frequent (30 cm pre-grazing height) and less severe (15 cm post-grazing height) grazing cycles provided animals with high leaf blade mass and low stem mass forage.Sociedade Brasileira de Zootecnia2012-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400011Revista Brasileira de Zootecnia v.41 n.4 2012reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982012000400011info:eu-repo/semantics/openAccessZanini,Guilherme DonedaSantos,Gabriela TrevisanSbrissia,André Fischereng2012-05-23T00:00:00Zoai:scielo:S1516-35982012000400011Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2012-05-23T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
title |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
spellingShingle |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage Zanini,Guilherme Doneda grazing management light interception Panicum maximum post-grazing height |
title_short |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
title_full |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
title_fullStr |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
title_full_unstemmed |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
title_sort |
Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage |
author |
Zanini,Guilherme Doneda |
author_facet |
Zanini,Guilherme Doneda Santos,Gabriela Trevisan Sbrissia,André Fischer |
author_role |
author |
author2 |
Santos,Gabriela Trevisan Sbrissia,André Fischer |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Zanini,Guilherme Doneda Santos,Gabriela Trevisan Sbrissia,André Fischer |
dc.subject.por.fl_str_mv |
grazing management light interception Panicum maximum post-grazing height |
topic |
grazing management light interception Panicum maximum post-grazing height |
description |
The objective of this study was to assess the accumulation and morphological composition of forage in Aruana Guineagrass (Panicum maximum cv. Aruana) swards subjected to intermittent stocking with sheep. Experimental treatments when grazing was introduced included low (95%) and high (98%) incident light interception and low (10 cm)- and high (15 cm)-residue height and were allocated to experimental units (196 m² fenced areas) in a completely randomized 2 × 2 factorial arrangement with three replicates. Treatments were imposed between January and May 2009. More frequent grazing cycles (95% light interception) resulted in better control of stem elongation, lower proportion of dead plant material and invasive plants, and higher proportions of leaf blades in the grazing strata, compared with less frequent grazing cycles (98% light interception). Grass managed with 95% light interception combined with 10 and 15 cm post-grazing height and grass managed at 98% light interception combined with 15 cm post-grazing height did not show differences in forage accumulation rate. These results indicate that more frequent (30 cm pre-grazing height) and less severe (15 cm post-grazing height) grazing cycles provided animals with high leaf blade mass and low stem mass forage. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982012000400011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
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 |
Revista Brasileira de Zootecnia v.41 n.4 2012 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
_version_ |
1750318149560958976 |