Performance of beef cattle on pasture of Brachiaria brizantha cv. Xaraés maintained at different sward heights
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
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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Semina. Ciências Agrárias (Online) |
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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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1799306070992093184 |