Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/30478 |
Resumo: | There are no studies evaluating the virginiamycin (VM) doses under tropical conditions. So, the present study was conducted to evaluate the optimal dose of VM for growing Nellore bulls on tropical pasture. Two experiments were conducted. The first experiment, one hundred and two Nellore bulls (307 ± 25 kg body weight [BW]; 22 months) were used. Animal performance was evaluated using a randomized block design, with group as experimental unit (n = 8; 12 animals each). The second experiment, a double 4 × 4 Latin square, eight animals were used to evaluate the ruminal parameters. Four doses were evaluated: 0, 35, 55, and 75 mg VM per 100 kg BW. The average daily gain (P = 0.08) and carcass gain (P = 0.05) exhibited a trend of quadratic behavior. An increased dose of VM did not affect supplement intake (P = 0.64), rumen pH (P = 0.96), acetate: propionate ratio (P = 0.73), or the total concentration of volatile fatty acid (P = 0.63). The concentration of rumen ammonia nitrogen exhibited a quadratic effect (P = 0.01). A quadratic behavior was found for volatile fatty acid, except for propionate (P < 0.01). In conclusion, the dose of 47 mg VM per 100 kg BW is recommend for growing Nellore bulls on tropical pasture. |
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Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pastureDeterminação da melhor dose resposta de virginiamicina nos parâmetros ruminais e desempenho de bovinos Nelore a pastoAdditiveNon- ionophoresSupplement intakeTropical grass.AditivoConsumo de suplementoNão-ionóforosPastagem tropical.There are no studies evaluating the virginiamycin (VM) doses under tropical conditions. So, the present study was conducted to evaluate the optimal dose of VM for growing Nellore bulls on tropical pasture. Two experiments were conducted. The first experiment, one hundred and two Nellore bulls (307 ± 25 kg body weight [BW]; 22 months) were used. Animal performance was evaluated using a randomized block design, with group as experimental unit (n = 8; 12 animals each). The second experiment, a double 4 × 4 Latin square, eight animals were used to evaluate the ruminal parameters. Four doses were evaluated: 0, 35, 55, and 75 mg VM per 100 kg BW. The average daily gain (P = 0.08) and carcass gain (P = 0.05) exhibited a trend of quadratic behavior. An increased dose of VM did not affect supplement intake (P = 0.64), rumen pH (P = 0.96), acetate: propionate ratio (P = 0.73), or the total concentration of volatile fatty acid (P = 0.63). The concentration of rumen ammonia nitrogen exhibited a quadratic effect (P = 0.01). A quadratic behavior was found for volatile fatty acid, except for propionate (P < 0.01). In conclusion, the dose of 47 mg VM per 100 kg BW is recommend for growing Nellore bulls on tropical pasture.Em condições tropicais não existem estudos avaliando doses de virginiamicina (VM). Dessa forma, o presente estudo foi conduzido para avaliar a dose ótima de VM para bovinos Nelore recriados em pasto tropical. Dois experimentos foram conduzidos. No Experimento 1 foram usados 102 bovinos Nelore não castrados, com peso corporal (PC) inicial de 307 ± 25 kg e 22 meses de idade. As variáveis de desempenho foram avaliadas em blocos inteiramente casualizados, sendo o grupo a unidade experimental (n = 8; 12 animais cada). No Experimento 2 foram utilizados oito animais em quadrado latino duplo para avaliação dos parâmetros ruminais. Foram avaliadas 4 doses de VM: 0, 35, 55, e 75 mg VM para cada 100 kg PC. O ganho médio diário (P = 0.08) e o ganho em carcaça (P = 0.05) apresentaram tendência de comportamento quadrático. O aumento na dose de VM não afetou o consumo de suplemento (P = 0.64), pH ruminal (P = 0.96), relação acetato: propionato (P = 0.73) e a concentração total de ácidos graxos voláteis (P = 0.63). A concentração de nitrogênio amoniacal ruminal apresentou efeito quadrático (P = 0.01). Comportamento quadrático foi observado para todos os ácidos graxos voláteis, exceto propionato (P < 0.01). Em conclusão, a dose de 47 mg VM/100 kg PC é recomendada para bovinos Nelore recriados em pastos tropicais.UEL2018-08-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de CampoPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3047810.5433/1679-0359.2018v39n4p1749Semina: Ciências Agrárias; Vol. 39 No. 4 (2018); 1749-1758Semina: Ciências Agrárias; v. 39 n. 4 (2018); 1749-17581679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30478/24038Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessAlves Neto, João AlexandrinoOliveira, Ivanna Moraes deMoretti, Matheus HenriqueGonçalves, Paloma HelenaAlves, Michele Aparecida PradoFernandes, Juliano José de ResendeResende, Flávio Dutra deSiqueira, Gustavo Rezende2022-10-20T20:04:20Zoai:ojs.pkp.sfu.ca:article/30478Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T20:04:20Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture Determinação da melhor dose resposta de virginiamicina nos parâmetros ruminais e desempenho de bovinos Nelore a pasto |
title |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture |
spellingShingle |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture Alves Neto, João Alexandrino Additive Non- ionophores Supplement intake Tropical grass. Aditivo Consumo de suplemento Não-ionóforos Pastagem tropical. |
title_short |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture |
title_full |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture |
title_fullStr |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture |
title_full_unstemmed |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture |
title_sort |
Determining the optimal dose of virginiamycin for ruminal parameters and performance of Nellore cattle on pasture |
author |
Alves Neto, João Alexandrino |
author_facet |
Alves Neto, João Alexandrino Oliveira, Ivanna Moraes de Moretti, Matheus Henrique Gonçalves, Paloma Helena Alves, Michele Aparecida Prado Fernandes, Juliano José de Resende Resende, Flávio Dutra de Siqueira, Gustavo Rezende |
author_role |
author |
author2 |
Oliveira, Ivanna Moraes de Moretti, Matheus Henrique Gonçalves, Paloma Helena Alves, Michele Aparecida Prado Fernandes, Juliano José de Resende Resende, Flávio Dutra de Siqueira, Gustavo Rezende |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Alves Neto, João Alexandrino Oliveira, Ivanna Moraes de Moretti, Matheus Henrique Gonçalves, Paloma Helena Alves, Michele Aparecida Prado Fernandes, Juliano José de Resende Resende, Flávio Dutra de Siqueira, Gustavo Rezende |
dc.subject.por.fl_str_mv |
Additive Non- ionophores Supplement intake Tropical grass. Aditivo Consumo de suplemento Não-ionóforos Pastagem tropical. |
topic |
Additive Non- ionophores Supplement intake Tropical grass. Aditivo Consumo de suplemento Não-ionóforos Pastagem tropical. |
description |
There are no studies evaluating the virginiamycin (VM) doses under tropical conditions. So, the present study was conducted to evaluate the optimal dose of VM for growing Nellore bulls on tropical pasture. Two experiments were conducted. The first experiment, one hundred and two Nellore bulls (307 ± 25 kg body weight [BW]; 22 months) were used. Animal performance was evaluated using a randomized block design, with group as experimental unit (n = 8; 12 animals each). The second experiment, a double 4 × 4 Latin square, eight animals were used to evaluate the ruminal parameters. Four doses were evaluated: 0, 35, 55, and 75 mg VM per 100 kg BW. The average daily gain (P = 0.08) and carcass gain (P = 0.05) exhibited a trend of quadratic behavior. An increased dose of VM did not affect supplement intake (P = 0.64), rumen pH (P = 0.96), acetate: propionate ratio (P = 0.73), or the total concentration of volatile fatty acid (P = 0.63). The concentration of rumen ammonia nitrogen exhibited a quadratic effect (P = 0.01). A quadratic behavior was found for volatile fatty acid, except for propionate (P < 0.01). In conclusion, the dose of 47 mg VM per 100 kg BW is recommend for growing Nellore bulls on tropical pasture. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-08-02 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo 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/30478 10.5433/1679-0359.2018v39n4p1749 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30478 |
identifier_str_mv |
10.5433/1679-0359.2018v39n4p1749 |
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/30478/24038 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 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. 39 No. 4 (2018); 1749-1758 Semina: Ciências Agrárias; v. 39 n. 4 (2018); 1749-1758 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_ |
1799306078406574080 |