Milk production and composition of dairy cows grazing elephant grass under two grazing intervals

Detalhes bibliográficos
Autor(a) principal: Voltolini, Tadeu Vinhas
Data de Publicação: 2010
Outros Autores: Santos, Flávio Augusto Portela, Martinez, Junio Cesar [UNESP], Imaizumi, Hugo, Clarindo, Rafael Luis, Penati, Marco Antonio
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/s1516-35982010000100016
http://hdl.handle.net/11449/225951
Resumo: The objective of this study was to evaluate two grazing intervals (IG) for elephant grass (Pennisetum purpureum Schum cv. Cameroon) pasture: one variable, determined by the entry of animals to the paddocks when 95% of active photosynthetic radiation was intercepted by the sward, and fixed 26-day grazing interval. Eight dairy cows were used, averaging 124 days lactation, 516 kg body weight and 17.5 kg daily milk production at the beginning of the trial. The experimental period was 80 days divided into four sub-periods of 20 days each. Data were analyzed in a cross-over design. The grazing frequencies did not influence milk production and composition, plasma urea nitrogen, body condition score and variations in body weight. However, the stocking rate and milk production per hectare were higher for pasture with interval of grazing determined by 95% of active photosynthetic radiation. Thus grazing frequency defined in variable intervals by sward interception of active photosynthetic radiation result in higher milk production per area unit. © 2010 Sociedade Brasileira de Zootecnia.
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spelling Milk production and composition of dairy cows grazing elephant grass under two grazing intervalsProdução e composição do leite de vacas mantidas em pastagens de capim-elefante submetidas a duas frequências de pastejoDairy cowsForageGrasslandMilk productionPasture managementPennisetum purpureumThe objective of this study was to evaluate two grazing intervals (IG) for elephant grass (Pennisetum purpureum Schum cv. Cameroon) pasture: one variable, determined by the entry of animals to the paddocks when 95% of active photosynthetic radiation was intercepted by the sward, and fixed 26-day grazing interval. Eight dairy cows were used, averaging 124 days lactation, 516 kg body weight and 17.5 kg daily milk production at the beginning of the trial. The experimental period was 80 days divided into four sub-periods of 20 days each. Data were analyzed in a cross-over design. The grazing frequencies did not influence milk production and composition, plasma urea nitrogen, body condition score and variations in body weight. However, the stocking rate and milk production per hectare were higher for pasture with interval of grazing determined by 95% of active photosynthetic radiation. Thus grazing frequency defined in variable intervals by sward interception of active photosynthetic radiation result in higher milk production per area unit. © 2010 Sociedade Brasileira de Zootecnia.Embrapa Semiárido, Petrolina, PEDepartamento de Zootecnia da Escola Superior de Agricultura Luiz de Queiroz Universidade de São Paulo, Piracicaba, SPPós-graduação em Zootecnia Faculdade de Ciências Agrárias e Veterinárias Universidade Paulista Júlio de Mesquita Filho, Jaboticabal,SPDukamp Saúde Animal Ltda, Monte Aprazível, SPPós-graduação em Zootecnia Faculdade de Ciências Agrárias e Veterinárias Universidade Paulista Júlio de Mesquita Filho, Jaboticabal,SPEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Dukamp Saúde Animal LtdaVoltolini, Tadeu VinhasSantos, Flávio Augusto PortelaMartinez, Junio Cesar [UNESP]Imaizumi, HugoClarindo, Rafael LuisPenati, Marco Antonio2022-04-28T21:02:08Z2022-04-28T21:02:08Z2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article121-127http://dx.doi.org/10.1590/s1516-35982010000100016Revista Brasileira de Zootecnia, v. 39, n. 1, p. 121-127, 2010.1806-92901516-3598http://hdl.handle.net/11449/22595110.1590/s1516-359820100001000162-s2.0-77954205462Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Zootecniainfo:eu-repo/semantics/openAccess2024-06-07T18:41:30Zoai:repositorio.unesp.br:11449/225951Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:54:23.857755Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
Produção e composição do leite de vacas mantidas em pastagens de capim-elefante submetidas a duas frequências de pastejo
title Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
spellingShingle Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
Voltolini, Tadeu Vinhas
Dairy cows
Forage
Grassland
Milk production
Pasture management
Pennisetum purpureum
title_short Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
title_full Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
title_fullStr Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
title_full_unstemmed Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
title_sort Milk production and composition of dairy cows grazing elephant grass under two grazing intervals
author Voltolini, Tadeu Vinhas
author_facet Voltolini, Tadeu Vinhas
Santos, Flávio Augusto Portela
Martinez, Junio Cesar [UNESP]
Imaizumi, Hugo
Clarindo, Rafael Luis
Penati, Marco Antonio
author_role author
author2 Santos, Flávio Augusto Portela
Martinez, Junio Cesar [UNESP]
Imaizumi, Hugo
Clarindo, Rafael Luis
Penati, Marco Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)
Dukamp Saúde Animal Ltda
dc.contributor.author.fl_str_mv Voltolini, Tadeu Vinhas
Santos, Flávio Augusto Portela
Martinez, Junio Cesar [UNESP]
Imaizumi, Hugo
Clarindo, Rafael Luis
Penati, Marco Antonio
dc.subject.por.fl_str_mv Dairy cows
Forage
Grassland
Milk production
Pasture management
Pennisetum purpureum
topic Dairy cows
Forage
Grassland
Milk production
Pasture management
Pennisetum purpureum
description The objective of this study was to evaluate two grazing intervals (IG) for elephant grass (Pennisetum purpureum Schum cv. Cameroon) pasture: one variable, determined by the entry of animals to the paddocks when 95% of active photosynthetic radiation was intercepted by the sward, and fixed 26-day grazing interval. Eight dairy cows were used, averaging 124 days lactation, 516 kg body weight and 17.5 kg daily milk production at the beginning of the trial. The experimental period was 80 days divided into four sub-periods of 20 days each. Data were analyzed in a cross-over design. The grazing frequencies did not influence milk production and composition, plasma urea nitrogen, body condition score and variations in body weight. However, the stocking rate and milk production per hectare were higher for pasture with interval of grazing determined by 95% of active photosynthetic radiation. Thus grazing frequency defined in variable intervals by sward interception of active photosynthetic radiation result in higher milk production per area unit. © 2010 Sociedade Brasileira de Zootecnia.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
2022-04-28T21:02:08Z
2022-04-28T21:02:08Z
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/s1516-35982010000100016
Revista Brasileira de Zootecnia, v. 39, n. 1, p. 121-127, 2010.
1806-9290
1516-3598
http://hdl.handle.net/11449/225951
10.1590/s1516-35982010000100016
2-s2.0-77954205462
url http://dx.doi.org/10.1590/s1516-35982010000100016
http://hdl.handle.net/11449/225951
identifier_str_mv Revista Brasileira de Zootecnia, v. 39, n. 1, p. 121-127, 2010.
1806-9290
1516-3598
10.1590/s1516-35982010000100016
2-s2.0-77954205462
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Revista Brasileira de Zootecnia
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 121-127
dc.source.none.fl_str_mv Scopus
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
_version_ 1808128874086662144