Supplementation levels for non-lactating cows grazing during the rainy season
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25529 |
Resumo: | This study aimed to evaluate levels of concentrate supplementation (1.5, 3.0, 4.5 and 6.0 kg day?1) for grazing dairy cows kept on Panicum maximum Jacq. cv. Tanzania pasture during the rainy season on nutrient intake and digestibility and rumen parameters. Four rumen cannulated non-lactating Holstein × Zebu crossbred cows were used in this study by a 4X4 Latin square design, which presented an average initial body weight of 521.69±31.98 kg. Each period lasted 17 days, being the first 10 days were used for animal adaptation and the remaining seven days for data collection. There was no effect (P > 0.05) of supplementation levels on total dry matter intake, although forage dry matter intake has been linearly decreased (P < 0.05). Treatments have no effect (P > 0.05) on the digestibility coefficients of dry matter, organic matter, crude protein, or ether extract. There was a linear increase (P < 0.05) on daily rumination time and total rumination times according to supplementation levels. There was no significant effect of supplementation levels (P > 0.05) or time after supplementation on rumen pH. Rumen ammonia nitrogen concentration responded quadratically (P < 0.05) to times after supplementation, with a maximum estimated concentration of 17.61 mg dL?1 at 3.87 h after supplementation. Increasing supplementation levels for grazing dairy cows reduces forage intake but has no negative effects on total dry matter intake or rumen-fluid pH. |
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Semina. Ciências Agrárias (Online) |
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Supplementation levels for non-lactating cows grazing during the rainy seasonNíveis de suplementação em vacas não-lactantes em pastejo no período das águasConcentrateHerbage intakeRumen parameters.ConcentradoConsumo de forragemParâmetros ruminais.This study aimed to evaluate levels of concentrate supplementation (1.5, 3.0, 4.5 and 6.0 kg day?1) for grazing dairy cows kept on Panicum maximum Jacq. cv. Tanzania pasture during the rainy season on nutrient intake and digestibility and rumen parameters. Four rumen cannulated non-lactating Holstein × Zebu crossbred cows were used in this study by a 4X4 Latin square design, which presented an average initial body weight of 521.69±31.98 kg. Each period lasted 17 days, being the first 10 days were used for animal adaptation and the remaining seven days for data collection. There was no effect (P > 0.05) of supplementation levels on total dry matter intake, although forage dry matter intake has been linearly decreased (P < 0.05). Treatments have no effect (P > 0.05) on the digestibility coefficients of dry matter, organic matter, crude protein, or ether extract. There was a linear increase (P < 0.05) on daily rumination time and total rumination times according to supplementation levels. There was no significant effect of supplementation levels (P > 0.05) or time after supplementation on rumen pH. Rumen ammonia nitrogen concentration responded quadratically (P < 0.05) to times after supplementation, with a maximum estimated concentration of 17.61 mg dL?1 at 3.87 h after supplementation. Increasing supplementation levels for grazing dairy cows reduces forage intake but has no negative effects on total dry matter intake or rumen-fluid pH.Objetivou-se avaliar o efeito de níveis de suplementação concentrada (1,5; 3,0; 4,5 e 6,0 kg dia-1) em vacas leiteiras mantidas em pasto de Panicum maximum Jacq. cv. Tanzânia no período das águas, sobre o consumo e a digestibilidade dos nutrientes e parâmetros ruminais. Foram utilizadas quatro vacas mestiças Holandês x Zebu, não lactantes, com peso corporal médio de 521,69±31,98 kg no início do experimento distribuídas aleatoriamente em delineamento em quadrado latino 4X4. Cada período teve duração de 17 dias, sendo os 10 dias iniciais para adaptação dos animais aos tratamentos e os sete dias restantes para coletas de dados. Não houve efeito (P > 0,05) dos níveis de suplementação sobre o consumo de matéria seca total com redução linear (P < 0,05) no consumo de matéria seca de forragem. Não houve efeito (P > 0,05) dos tratamentos nos coeficientes de digestibilidade da matéria seca, matéria orgânica, proteína bruta e extrato etéreo. Houve aumento linear (P < 0,05) do tempo de ruminação diurna e total com o aumento dos níveis de suplementação. Não houve efeito significativo dos níveis de suplementação (P > 0,05) e tempo após a suplementação sobre o pH ruminal. A concentração de nitrogênio amoniacal ruminal apresentou comportamento quadrático (P < 0,05) em relação aos tempos após a alimentação, sendo estimado valor máximo de 17,61 mg dL-1 no tempo 3,87 horas após a alimentação. O aumento dos níveis de suplementação para vacas leiteiras mantidas a pasto reduz o consumo de forragem, sem afetar negativamente o consumo de matéria seca total e sem alterar os valores de pH do líquido ruminal.UEL2017-05-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2552910.5433/1679-0359.2017v38n2p885Semina: Ciências Agrárias; Vol. 38 No. 2 (2017); 885-894Semina: Ciências Agrárias; v. 38 n. 2 (2017); 885-8941679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25529/20824Copyright (c) 2017 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSilva, Joelson AntonioCabral, Luciano da SilvaSousa, Daniel de PaulaOliveira, André Soares deGalati, Rosemary LaisSantos, Marcelo Diniz dosPaula, Nelcino Francisco deSilva, Camilla Gabriela MirandaCosta Júnior, Wagner Soares daOliveira, Isis Scatolin de2022-11-16T16:51:42Zoai:ojs.pkp.sfu.ca:article/25529Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-16T16:51:42Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Supplementation levels for non-lactating cows grazing during the rainy season Níveis de suplementação em vacas não-lactantes em pastejo no período das águas |
title |
Supplementation levels for non-lactating cows grazing during the rainy season |
spellingShingle |
Supplementation levels for non-lactating cows grazing during the rainy season Silva, Joelson Antonio Concentrate Herbage intake Rumen parameters. Concentrado Consumo de forragem Parâmetros ruminais. |
title_short |
Supplementation levels for non-lactating cows grazing during the rainy season |
title_full |
Supplementation levels for non-lactating cows grazing during the rainy season |
title_fullStr |
Supplementation levels for non-lactating cows grazing during the rainy season |
title_full_unstemmed |
Supplementation levels for non-lactating cows grazing during the rainy season |
title_sort |
Supplementation levels for non-lactating cows grazing during the rainy season |
author |
Silva, Joelson Antonio |
author_facet |
Silva, Joelson Antonio Cabral, Luciano da Silva Sousa, Daniel de Paula Oliveira, André Soares de Galati, Rosemary Lais Santos, Marcelo Diniz dos Paula, Nelcino Francisco de Silva, Camilla Gabriela Miranda Costa Júnior, Wagner Soares da Oliveira, Isis Scatolin de |
author_role |
author |
author2 |
Cabral, Luciano da Silva Sousa, Daniel de Paula Oliveira, André Soares de Galati, Rosemary Lais Santos, Marcelo Diniz dos Paula, Nelcino Francisco de Silva, Camilla Gabriela Miranda Costa Júnior, Wagner Soares da Oliveira, Isis Scatolin de |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Joelson Antonio Cabral, Luciano da Silva Sousa, Daniel de Paula Oliveira, André Soares de Galati, Rosemary Lais Santos, Marcelo Diniz dos Paula, Nelcino Francisco de Silva, Camilla Gabriela Miranda Costa Júnior, Wagner Soares da Oliveira, Isis Scatolin de |
dc.subject.por.fl_str_mv |
Concentrate Herbage intake Rumen parameters. Concentrado Consumo de forragem Parâmetros ruminais. |
topic |
Concentrate Herbage intake Rumen parameters. Concentrado Consumo de forragem Parâmetros ruminais. |
description |
This study aimed to evaluate levels of concentrate supplementation (1.5, 3.0, 4.5 and 6.0 kg day?1) for grazing dairy cows kept on Panicum maximum Jacq. cv. Tanzania pasture during the rainy season on nutrient intake and digestibility and rumen parameters. Four rumen cannulated non-lactating Holstein × Zebu crossbred cows were used in this study by a 4X4 Latin square design, which presented an average initial body weight of 521.69±31.98 kg. Each period lasted 17 days, being the first 10 days were used for animal adaptation and the remaining seven days for data collection. There was no effect (P > 0.05) of supplementation levels on total dry matter intake, although forage dry matter intake has been linearly decreased (P < 0.05). Treatments have no effect (P > 0.05) on the digestibility coefficients of dry matter, organic matter, crude protein, or ether extract. There was a linear increase (P < 0.05) on daily rumination time and total rumination times according to supplementation levels. There was no significant effect of supplementation levels (P > 0.05) or time after supplementation on rumen pH. Rumen ammonia nitrogen concentration responded quadratically (P < 0.05) to times after supplementation, with a maximum estimated concentration of 17.61 mg dL?1 at 3.87 h after supplementation. Increasing supplementation levels for grazing dairy cows reduces forage intake but has no negative effects on total dry matter intake or rumen-fluid pH. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-02 |
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/25529 10.5433/1679-0359.2017v38n2p885 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25529 |
identifier_str_mv |
10.5433/1679-0359.2017v38n2p885 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25529/20824 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 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. 38 No. 2 (2017); 885-894 Semina: Ciências Agrárias; v. 38 n. 2 (2017); 885-894 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_ |
1799306075815542784 |