Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/9085 |
Resumo: | The objective of this work was to assess the grazing intensity effects on the finishing of yearling bulls, in winter pastures in succession to soybean crop. Sward pre-grazing different heights of mixed pasture between ryegrass and oat were evaluated: 10, 20, 30 and 40 cm. A randomized complete block design was utilized with three replicates. Ten-month-old beef crossbred bulls were used, with initial live weight of 192±12 kg. The following variables were evaluated: forage mass and allowance, sward height, forage daily accumulation rate and forage total accumulation, average daily weight gain (ADG), stocking rate and weight gain per unit area (GA), as well as the qualitative characteristics of the carcasses. The yearling bulls were slaughtered at 14 months of age. ADG fitted a quadratic model, with maximum performance between 20 and 25‑cm sward height, while GA fitted a negative linear model. Yearling bulls showed a satisfactory carcass quality when pastures were managed with pre‑grazing heights higher than 10 cm. It is possible to finish yearling bulls in the pasture phase of integrated production systems, during winter, in succession to soybean crop. The management of ryegrass and oat mixed pastures at sward pre-grazing heights of 20 and 25 cm optimize individual animal performance and per area unit. |
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Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensitiesDesempenho e características das carcaças de novilhos superprecoces em pastos hibernais submetidos a intensidades de pastejostocking rate; average daily weight gain; weight gain per unit area; crop-livestock integration; forage allowancecarga animal; ganho de peso médio diário; ganho de peso por unidade de área; integração lavoura-pecuária; oferta de forragemThe objective of this work was to assess the grazing intensity effects on the finishing of yearling bulls, in winter pastures in succession to soybean crop. Sward pre-grazing different heights of mixed pasture between ryegrass and oat were evaluated: 10, 20, 30 and 40 cm. A randomized complete block design was utilized with three replicates. Ten-month-old beef crossbred bulls were used, with initial live weight of 192±12 kg. The following variables were evaluated: forage mass and allowance, sward height, forage daily accumulation rate and forage total accumulation, average daily weight gain (ADG), stocking rate and weight gain per unit area (GA), as well as the qualitative characteristics of the carcasses. The yearling bulls were slaughtered at 14 months of age. ADG fitted a quadratic model, with maximum performance between 20 and 25‑cm sward height, while GA fitted a negative linear model. Yearling bulls showed a satisfactory carcass quality when pastures were managed with pre‑grazing heights higher than 10 cm. It is possible to finish yearling bulls in the pasture phase of integrated production systems, during winter, in succession to soybean crop. The management of ryegrass and oat mixed pastures at sward pre-grazing heights of 20 and 25 cm optimize individual animal performance and per area unit.O objetivo deste trabalho foi avaliar os efeitos de intensidades de pastejo na terminação de novilhos superprecoces, em pastagens de inverno em sucessão à soja. Foram avaliadas diferentes alturas de pré-pastejo de pastos mistos de azevém e aveia: 10, 20, 30 e 40 cm. Empregou-se o delineamento de blocos ao acaso, com três repetições. Foram utilizados machos mestiços de raças de corte, inteiros, com idade de 10 meses e peso médio inicial de 192±12 kg. As seguintes variáveis foram avaliadas: massa e oferta de forragem, altura do pasto, taxa de acúmulo diário e acúmulo total de forragem, ganho de peso médio diário (GMD), carga animal e ganho de peso vivo por unidade de área (GPA), além de características qualitativas de carcaça. Os novilhos foram abatidos aos 14 meses de idade. O GMD ajustou-se a um modelo de regressão quadrático e teve o ponto de máximo desempenho entre 20 e 25 cm de altura de pré-pastejo, enquanto o GPA ajustou-se a um modelo linear negativo. A qualidade da carcaça dos novilhos foi satisfatória, quando os pastos foram manejados em alturas superiores a 10 cm. É possível produzir carcaças de novilhos superprecoces, na fase de pastagem de sistemas integrados de produção, durante o inverno, em sucessão à soja. O manejo de pastos mistos de azevém e aveia, em alturas entre 20 e 25 cm, otimiza o desempenho animal individual e por área. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPq e CAPESCNPq, CAPESda Rocha, Lemar MacielCarvalho, Paulo César de FaccioBaggio, CarolinaAnghinoni, IbanorTerra Lopes, Marília LazzarottoMacari, Stefanida Silva, Jamir Luis Silva2012-01-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/9085Pesquisa Agropecuaria Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1379-1384Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1379-13841678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/9085/6651https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9085/4458info:eu-repo/semantics/openAccess2014-06-24T16:42:55Zoai:ojs.seer.sct.embrapa.br:article/9085Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-06-24T16:42:55Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities Desempenho e características das carcaças de novilhos superprecoces em pastos hibernais submetidos a intensidades de pastejo |
title |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities |
spellingShingle |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities da Rocha, Lemar Maciel stocking rate; average daily weight gain; weight gain per unit area; crop-livestock integration; forage allowance carga animal; ganho de peso médio diário; ganho de peso por unidade de área; integração lavoura-pecuária; oferta de forragem |
title_short |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities |
title_full |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities |
title_fullStr |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities |
title_full_unstemmed |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities |
title_sort |
Performance and carcass characteristics of yearling bulls on winter pastures subjected to grazing intensities |
author |
da Rocha, Lemar Maciel |
author_facet |
da Rocha, Lemar Maciel Carvalho, Paulo César de Faccio Baggio, Carolina Anghinoni, Ibanor Terra Lopes, Marília Lazzarotto Macari, Stefani da Silva, Jamir Luis Silva |
author_role |
author |
author2 |
Carvalho, Paulo César de Faccio Baggio, Carolina Anghinoni, Ibanor Terra Lopes, Marília Lazzarotto Macari, Stefani da Silva, Jamir Luis Silva |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
CNPq e CAPES CNPq, CAPES |
dc.contributor.author.fl_str_mv |
da Rocha, Lemar Maciel Carvalho, Paulo César de Faccio Baggio, Carolina Anghinoni, Ibanor Terra Lopes, Marília Lazzarotto Macari, Stefani da Silva, Jamir Luis Silva |
dc.subject.por.fl_str_mv |
stocking rate; average daily weight gain; weight gain per unit area; crop-livestock integration; forage allowance carga animal; ganho de peso médio diário; ganho de peso por unidade de área; integração lavoura-pecuária; oferta de forragem |
topic |
stocking rate; average daily weight gain; weight gain per unit area; crop-livestock integration; forage allowance carga animal; ganho de peso médio diário; ganho de peso por unidade de área; integração lavoura-pecuária; oferta de forragem |
description |
The objective of this work was to assess the grazing intensity effects on the finishing of yearling bulls, in winter pastures in succession to soybean crop. Sward pre-grazing different heights of mixed pasture between ryegrass and oat were evaluated: 10, 20, 30 and 40 cm. A randomized complete block design was utilized with three replicates. Ten-month-old beef crossbred bulls were used, with initial live weight of 192±12 kg. The following variables were evaluated: forage mass and allowance, sward height, forage daily accumulation rate and forage total accumulation, average daily weight gain (ADG), stocking rate and weight gain per unit area (GA), as well as the qualitative characteristics of the carcasses. The yearling bulls were slaughtered at 14 months of age. ADG fitted a quadratic model, with maximum performance between 20 and 25‑cm sward height, while GA fitted a negative linear model. Yearling bulls showed a satisfactory carcass quality when pastures were managed with pre‑grazing heights higher than 10 cm. It is possible to finish yearling bulls in the pasture phase of integrated production systems, during winter, in succession to soybean crop. The management of ryegrass and oat mixed pastures at sward pre-grazing heights of 20 and 25 cm optimize individual animal performance and per area unit. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-02 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/9085 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/9085 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/9085/6651 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9085/4458 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1379-1384 Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1379-1384 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416680073854976 |