Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights

Detalhes bibliográficos
Autor(a) principal: Barbosa, Marco Aurélio Alves de Freitas
Data de Publicação: 2013
Outros Autores: Castro, Letícia Maria, Barbero, Rondineli Pavezzi, Brito, Vinicius Campachi, Miorin, Renan Lucas, Silva, Leandro das Dores Ferreira da, Ribeiro, Edson Luis de Azambuja, Mizubuti, Ivone Yurika
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16652
Resumo: The production of grazing cattle has been very interesting, due to the low cost to produce fodder, compared to other sources of forage used to feed these animals, but the adequate management pasture has high influence on the success and profitability of cattle production systems. Thus, the objective of this study was to determine the optimum grazing height of Brachiaria brizantha cv. Xaraés, which provides the highest individual weight gain and gain per area. The stocking rate was continuous, with variable stocking rate. The experimental period was from January to December 2010. Three Nellore males were used in each experimental plot, and, when needed, additional animals were used for adjusting the desired heights. Monthly sampling was obtained to estimate forage mass (kg.ha-1 of DM) and the structural characteristics of the pastures, such as, leaf: stem ratio. The animals were weighed at the beginning of the experiment and every 28 days, after 12 hours of fasting, to measure the average daily gain (ADG) After weighings were performed adjustments stocking rate to desired heights. Throughout the experimental period the animals received mineral supplementation. The desired sward heights were 15, 30, 45 and 60 cm, with three replicates each. The experimental design was completely randomized with four treatments and three replications. To body weight gain (BWG) and average daily gain (ADG), each animal was considered an experimental unit. To gain per area and stocking rate, the paddock was considered the experimental unit. The leaf: stem ratio showed a linear increasing behavior in the spring and summer seasons. The smaller grazing heights provided higher gain per unit area (812.15 kg ha-1), while the highest grazing heights promoted high individual weight gain (0.790 kg.dia-1). The results suggest that Xaraés grass pastures should be grazed between 30 and 45 cm to allow reasonable performances by area and individual performances.
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spelling Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heightsDesempenho de bovinos de corte em pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejoAverage daily gainCaiuá sandstoneChemical compositionNelorePasture productionStocking rate.Arenito CaiuáComposição químicaGanho médio diárioNeloreProdução à pastoTaxa de lotação.Pastagem e ForragiculturaThe production of grazing cattle has been very interesting, due to the low cost to produce fodder, compared to other sources of forage used to feed these animals, but the adequate management pasture has high influence on the success and profitability of cattle production systems. Thus, the objective of this study was to determine the optimum grazing height of Brachiaria brizantha cv. Xaraés, which provides the highest individual weight gain and gain per area. The stocking rate was continuous, with variable stocking rate. The experimental period was from January to December 2010. Three Nellore males were used in each experimental plot, and, when needed, additional animals were used for adjusting the desired heights. Monthly sampling was obtained to estimate forage mass (kg.ha-1 of DM) and the structural characteristics of the pastures, such as, leaf: stem ratio. The animals were weighed at the beginning of the experiment and every 28 days, after 12 hours of fasting, to measure the average daily gain (ADG) After weighings were performed adjustments stocking rate to desired heights. Throughout the experimental period the animals received mineral supplementation. The desired sward heights were 15, 30, 45 and 60 cm, with three replicates each. The experimental design was completely randomized with four treatments and three replications. To body weight gain (BWG) and average daily gain (ADG), each animal was considered an experimental unit. To gain per area and stocking rate, the paddock was considered the experimental unit. The leaf: stem ratio showed a linear increasing behavior in the spring and summer seasons. The smaller grazing heights provided higher gain per unit area (812.15 kg ha-1), while the highest grazing heights promoted high individual weight gain (0.790 kg.dia-1). The results suggest that Xaraés grass pastures should be grazed between 30 and 45 cm to allow reasonable performances by area and individual performances.A produção de bovinos a pasto tem se mostrado muito interessante, devido ao baixo custo para produzir forragem, quando comparado a outras fontes de volumosos utilizados na alimentação desses animais, porém o manejo adequado da pastagem apresenta grande influencia no sucesso e lucratividade dos sistemas de produção de bovinos. Desta forma, objetivou-se com este trabalho determinar faixa de altura de pastejo ótima de Brachiaria brizantha cv. Xaraés que proporciona os maiores ganhos de peso individual e por área. A lotação foi contínua e a taxa de lotação variável. O período experimental compreendeu de janeiro a dezembro de 2010. Para tal, utilizaram-se três bovinos Nelore, machos, por parcela experimental, mais animais adicionais conforme necessidade de ajuste à altura pretendida. Foram realizadas amostragens mensais para estimar a massa de forragem (kg.ha-1 de MS) e as características estruturais dos pastos, tais como relação lâmina foliar : colmo. Os animais foram pesados à entrada no experimento e a cada 28 dias, após 12 horas de jejum, para mensuração do ganho médio diário (GMD). Após as pesagens foram efetuados os ajustes da taxa de lotação animal às alturas pretendidas. Durante todo período experimental os animais receberam suplementação mineral. As alturas pretendidas do pasto foram de 15, 30, 45 e 60 cm, com três repetições cada. O delineamento experimental foi inteiramente casualizado com quatro tratamentos e três repetições. Para ganho de peso corporal (GPC) e ganho médio diário (GMD), cada animal foi considerado uma unidade experimental. Para ganho por área e taxa de lotação, o piquete foi considerado a unidade experimental. A relação lâmina foliar: colmo apresentou comportamento linear crescente nas estações primavera e verão. As menores alturas de pastejo proporcionaram maiores ganhos por unidade de área (812,15 kg.ha-1), enquanto as maiores alturas de pastejo promoveram maior ganho de peso individual (0,790 kg.dia-1). Os resultados encontrados sugerem que os pastos de capim Xaraés devem ser manejados entre 30 e 45 cm para permitir desempenhos razoáveis por área e individual.UEL2013-12-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1665210.5433/1679-0359.2013v34n6Supl2p4133Semina: Ciências Agrárias; Vol. 34 No. 6Supl2 (2013); 4133-4144Semina: Ciências Agrárias; v. 34 n. 6Supl2 (2013); 4133-41441679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16652/pdf_198Barbosa, Marco Aurélio Alves de FreitasCastro, Letícia MariaBarbero, Rondineli PavezziBrito, Vinicius CampachiMiorin, Renan LucasSilva, Leandro das Dores Ferreira daRibeiro, Edson Luis de AzambujaMizubuti, Ivone Yurikainfo:eu-repo/semantics/openAccess2015-11-19T18:36:09Zoai:ojs.pkp.sfu.ca:article/16652Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:36:09Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
Desempenho de bovinos de corte em pastos de Brachiaria brizantha cv. Xaraés manejados em diferentes alturas de pastejo
title Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
spellingShingle Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
Barbosa, Marco Aurélio Alves de Freitas
Average daily gain
Caiuá sandstone
Chemical composition
Nelore
Pasture production
Stocking rate.
Arenito Caiuá
Composição química
Ganho médio diário
Nelore
Produção à pasto
Taxa de lotação.
Pastagem e Forragicultura
title_short Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
title_full Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
title_fullStr Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
title_full_unstemmed Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
title_sort Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
author Barbosa, Marco Aurélio Alves de Freitas
author_facet Barbosa, Marco Aurélio Alves de Freitas
Castro, Letícia Maria
Barbero, Rondineli Pavezzi
Brito, Vinicius Campachi
Miorin, Renan Lucas
Silva, Leandro das Dores Ferreira da
Ribeiro, Edson Luis de Azambuja
Mizubuti, Ivone Yurika
author_role author
author2 Castro, Letícia Maria
Barbero, Rondineli Pavezzi
Brito, Vinicius Campachi
Miorin, Renan Lucas
Silva, Leandro das Dores Ferreira da
Ribeiro, Edson Luis de Azambuja
Mizubuti, Ivone Yurika
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Barbosa, Marco Aurélio Alves de Freitas
Castro, Letícia Maria
Barbero, Rondineli Pavezzi
Brito, Vinicius Campachi
Miorin, Renan Lucas
Silva, Leandro das Dores Ferreira da
Ribeiro, Edson Luis de Azambuja
Mizubuti, Ivone Yurika
dc.subject.por.fl_str_mv Average daily gain
Caiuá sandstone
Chemical composition
Nelore
Pasture production
Stocking rate.
Arenito Caiuá
Composição química
Ganho médio diário
Nelore
Produção à pasto
Taxa de lotação.
Pastagem e Forragicultura
topic Average daily gain
Caiuá sandstone
Chemical composition
Nelore
Pasture production
Stocking rate.
Arenito Caiuá
Composição química
Ganho médio diário
Nelore
Produção à pasto
Taxa de lotação.
Pastagem e Forragicultura
description The production of grazing cattle has been very interesting, due to the low cost to produce fodder, compared to other sources of forage used to feed these animals, but the adequate management pasture has high influence on the success and profitability of cattle production systems. Thus, the objective of this study was to determine the optimum grazing height of Brachiaria brizantha cv. Xaraés, which provides the highest individual weight gain and gain per area. The stocking rate was continuous, with variable stocking rate. The experimental period was from January to December 2010. Three Nellore males were used in each experimental plot, and, when needed, additional animals were used for adjusting the desired heights. Monthly sampling was obtained to estimate forage mass (kg.ha-1 of DM) and the structural characteristics of the pastures, such as, leaf: stem ratio. The animals were weighed at the beginning of the experiment and every 28 days, after 12 hours of fasting, to measure the average daily gain (ADG) After weighings were performed adjustments stocking rate to desired heights. Throughout the experimental period the animals received mineral supplementation. The desired sward heights were 15, 30, 45 and 60 cm, with three replicates each. The experimental design was completely randomized with four treatments and three replications. To body weight gain (BWG) and average daily gain (ADG), each animal was considered an experimental unit. To gain per area and stocking rate, the paddock was considered the experimental unit. The leaf: stem ratio showed a linear increasing behavior in the spring and summer seasons. The smaller grazing heights provided higher gain per unit area (812.15 kg ha-1), while the highest grazing heights promoted high individual weight gain (0.790 kg.dia-1). The results suggest that Xaraés grass pastures should be grazed between 30 and 45 cm to allow reasonable performances by area and individual performances.
publishDate 2013
dc.date.none.fl_str_mv 2013-12-17
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa Empírica de Campo
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16652
10.5433/1679-0359.2013v34n6Supl2p4133
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16652
identifier_str_mv 10.5433/1679-0359.2013v34n6Supl2p4133
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16652/pdf_198
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 34 No. 6Supl2 (2013); 4133-4144
Semina: Ciências Agrárias; v. 34 n. 6Supl2 (2013); 4133-4144
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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