Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/14891 |
Resumo: | The objective of this study was to evaluate the effect of four levels of concentrate (0, 1, 3 and 5 kg/ cow/day) and two of crude protein (CP) (14 and 18% crude protein in dry matter of concentrate) on performance (milk production and composition), intake and apparent nutrient digestibility, and plasma urea nitrogen concentration (PUN) of lactating cows in rotational Tanzânia (Panicum maximum Jacq. cv. Tanzânia) pasture. Eight crossbred cows (Holstein-Gir) with average weight of 488 kg and average production of 12 kg of milk/cow/day, were used. The experimental design was a latin square (4x4), with four animals and four experimental diets, being used two latin squares simultaneously and individualized, each one with a CP level. Were observed influences of CP levels on CP, non-fiber carbohydrates (NFC) and total carbohydrates (TC) intakes. Dry matter (DM), crude protein, ether extract (EE), CNF, CT and total digestible nutrients (TDN) intakes increased as the concentrates were provided both as 14% (C14) to 18% CP (C18), individually. Neutral detergent fiber (NDF) intake decreased as the concentrates were provided. The CP levels did not influence the apparent digestibility of DM, CP, NDF, EE and CT. However, there was an increase in the DM apparent digestibility of groups C14 and C18 individually. No influence were observed of concentrate levels and CP on PUN, milk production and composition. The results show that the rotational grazing of Tanzania, without supplementation, is the best option for milk production during the rainy season for crossbred cows with an average production of 12 kg milk/cow/day. |
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Semina. Ciências Agrárias (Online) |
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Performance of dairy cows in pasture supplemented with levels of concentrate and crude proteinDesempenho de vacas leiteiras sob pastejo suplementadas com níveis de concentrado e proteína brutaMilk compositionMilk productionNutritionPUN.Composição do leiteNUPNutriçãoProdução do leite.Nutrição de RuminantesThe objective of this study was to evaluate the effect of four levels of concentrate (0, 1, 3 and 5 kg/ cow/day) and two of crude protein (CP) (14 and 18% crude protein in dry matter of concentrate) on performance (milk production and composition), intake and apparent nutrient digestibility, and plasma urea nitrogen concentration (PUN) of lactating cows in rotational Tanzânia (Panicum maximum Jacq. cv. Tanzânia) pasture. Eight crossbred cows (Holstein-Gir) with average weight of 488 kg and average production of 12 kg of milk/cow/day, were used. The experimental design was a latin square (4x4), with four animals and four experimental diets, being used two latin squares simultaneously and individualized, each one with a CP level. Were observed influences of CP levels on CP, non-fiber carbohydrates (NFC) and total carbohydrates (TC) intakes. Dry matter (DM), crude protein, ether extract (EE), CNF, CT and total digestible nutrients (TDN) intakes increased as the concentrates were provided both as 14% (C14) to 18% CP (C18), individually. Neutral detergent fiber (NDF) intake decreased as the concentrates were provided. The CP levels did not influence the apparent digestibility of DM, CP, NDF, EE and CT. However, there was an increase in the DM apparent digestibility of groups C14 and C18 individually. No influence were observed of concentrate levels and CP on PUN, milk production and composition. The results show that the rotational grazing of Tanzania, without supplementation, is the best option for milk production during the rainy season for crossbred cows with an average production of 12 kg milk/cow/day.Este trabalho foi realizado com o objetivo de avaliar os efeitos de quatro níveis de concentrado (0, 1, 3 e 5 kg/vaca/dia) e dois de proteína bruta (PB) (14 e 18% na matéria seca do concentrado) sobre o desempenho (produção e composição do leite), consumo e digestibilidade aparente de nutrientes, e teor de nitrogênio ureico plasmático (NUP) de vacas leiteiras sob pastejo rotacionado em capim Tanzânia (Panicum maximum Jacq. cv. Tanzânia). Foram utilizadas oito vacas mestiças (Holandês x Gir) com peso médio de 488 kg e produção média de 12 kg de leite/vaca/dia. O delineamento experimental utilizado foi o quadrado latino (4x4), com quatro animais e quatro dietas experimentais, sendo utilizados dois quadrados simultâneos e individualizados, cada um com um nível de PB. Foram observadas influências dos níveis de PB sobre os consumos de PB, carboidratos não fibrosos (CNF) e carboidratos totais (CT). Os consumos de matéria seca (MS), PB, extrato etéreo (EE), CT, CNF e nutrientes digestíveis totais (NDT) aumentaram à medida que foram fornecidos os concentrados tanto de 14% (C14) quanto de 18% de PB (C18), individualmente. Os consumos de fibra em detergente neutro (FDN) diminuíram à medida que foram fornecidos os concentrados. Os níveis de PB não influenciaram os coeficientes de digestibilidade aparente da MS, PB, FDN, EE e CT. Contudo, houve aumento nos coeficientes de digestibilidade aparente da MS dos grupos C14 e C18, individualmente. Não houve influência dos níveis de concentrado e de PB sobre os níveis de NUP, produção e composição do leite. Os resultados da pesquisa demonstram que o pastejo rotacionado de capim Tanzânia sem suplementação é a melhor opção de produção de leite na época das chuvas para vacas mestiças com produção média de 12 kg de leite/vaca/dia.UEL2014-12-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1489110.5433/1679-0359.2014v35n6p3287Semina: Ciências Agrárias; Vol. 35 No. 6 (2014); 3287-3304Semina: Ciências Agrárias; v. 35 n. 6 (2014); 3287-33041679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/14891/pdf_547Copyright (c) 2014 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessOliveira, Aline Guimarães deOliveira, Veronaldo Souza deSantos, Gladston Rafael de ArrudaSantos, Anselmo Domingos FerreiraSobrinho, Diomar Claudio dos SantosOliveira, Fábio Luiz deSantana, José AugustoGoveia, Julianne Santiago Silva2023-01-13T16:27:49Zoai:ojs.pkp.sfu.ca:article/14891Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-01-13T16:27:49Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein Desempenho de vacas leiteiras sob pastejo suplementadas com níveis de concentrado e proteína bruta |
title |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein |
spellingShingle |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein Oliveira, Aline Guimarães de Milk composition Milk production Nutrition PUN. Composição do leite NUP Nutrição Produção do leite. Nutrição de Ruminantes |
title_short |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein |
title_full |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein |
title_fullStr |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein |
title_full_unstemmed |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein |
title_sort |
Performance of dairy cows in pasture supplemented with levels of concentrate and crude protein |
author |
Oliveira, Aline Guimarães de |
author_facet |
Oliveira, Aline Guimarães de Oliveira, Veronaldo Souza de Santos, Gladston Rafael de Arruda Santos, Anselmo Domingos Ferreira Sobrinho, Diomar Claudio dos Santos Oliveira, Fábio Luiz de Santana, José Augusto Goveia, Julianne Santiago Silva |
author_role |
author |
author2 |
Oliveira, Veronaldo Souza de Santos, Gladston Rafael de Arruda Santos, Anselmo Domingos Ferreira Sobrinho, Diomar Claudio dos Santos Oliveira, Fábio Luiz de Santana, José Augusto Goveia, Julianne Santiago Silva |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Aline Guimarães de Oliveira, Veronaldo Souza de Santos, Gladston Rafael de Arruda Santos, Anselmo Domingos Ferreira Sobrinho, Diomar Claudio dos Santos Oliveira, Fábio Luiz de Santana, José Augusto Goveia, Julianne Santiago Silva |
dc.subject.por.fl_str_mv |
Milk composition Milk production Nutrition PUN. Composição do leite NUP Nutrição Produção do leite. Nutrição de Ruminantes |
topic |
Milk composition Milk production Nutrition PUN. Composição do leite NUP Nutrição Produção do leite. Nutrição de Ruminantes |
description |
The objective of this study was to evaluate the effect of four levels of concentrate (0, 1, 3 and 5 kg/ cow/day) and two of crude protein (CP) (14 and 18% crude protein in dry matter of concentrate) on performance (milk production and composition), intake and apparent nutrient digestibility, and plasma urea nitrogen concentration (PUN) of lactating cows in rotational Tanzânia (Panicum maximum Jacq. cv. Tanzânia) pasture. Eight crossbred cows (Holstein-Gir) with average weight of 488 kg and average production of 12 kg of milk/cow/day, were used. The experimental design was a latin square (4x4), with four animals and four experimental diets, being used two latin squares simultaneously and individualized, each one with a CP level. Were observed influences of CP levels on CP, non-fiber carbohydrates (NFC) and total carbohydrates (TC) intakes. Dry matter (DM), crude protein, ether extract (EE), CNF, CT and total digestible nutrients (TDN) intakes increased as the concentrates were provided both as 14% (C14) to 18% CP (C18), individually. Neutral detergent fiber (NDF) intake decreased as the concentrates were provided. The CP levels did not influence the apparent digestibility of DM, CP, NDF, EE and CT. However, there was an increase in the DM apparent digestibility of groups C14 and C18 individually. No influence were observed of concentrate levels and CP on PUN, milk production and composition. The results show that the rotational grazing of Tanzania, without supplementation, is the best option for milk production during the rainy season for crossbred cows with an average production of 12 kg milk/cow/day. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-09 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/14891 10.5433/1679-0359.2014v35n6p3287 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/14891 |
identifier_str_mv |
10.5433/1679-0359.2014v35n6p3287 |
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/14891/pdf_547 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2014 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2014 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
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. 35 No. 6 (2014); 3287-3304 Semina: Ciências Agrárias; v. 35 n. 6 (2014); 3287-3304 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 |
_version_ |
1799306069672984576 |