In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid
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/29652 |
Resumo: | The aim of this study was to evaluate the effect of increasing levels of cashew nut shell liquid (CNSL) in ruminant diets on in vitro dry matter digestibility (IVDMD), gas production kinetics, ruminal fermentation parameters, ammoniacal nitrogen concentration (NH3-N), and pH of the artificial rumen contents. The experimental design was completely randomized in a factorial 5 x 4 + 1 design, with five concentrate levels (200, 400, 600, 800, and 1,000 g kg-1 DM) and four CNSL levels (0, 0.3, 0.6, and 1.2 g kg-1 DM), as well as a control diet comprising only whole-plant corn silage, totaling 21 treatments. The inclusion of concentrate linearly increased IVDMD, while CNSL levels showed a quadratic effect, with the maximum estimated at 0.5 g kg-1 of CNSL. The total gas production, the disappearance of the substrate, the fraction of slow degradation (fraction VF2), and the respective degradation rate (fraction µ2) linearly increased with increasing levels of concentrate in the diet. Increasing concentrate levels resulted in a linear increase in the concentration of NH3-N and a reduction in the pH of the rumen liquid. Increasing CNSL levels decreased the concentration of NH3-N and increased the ruminal pH. The inclusion of 0.5 g CNSL kg-1 in the ruminant diets improved IVDMD, without altering the kinetic parameters of ruminal fermentation. The addition of CNSL to ruminant diets reduces ammoniacal nitrogen production and can avoid drastic reductions in ruminal pH, favoring better fermentation in the rumen. |
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Semina. Ciências Agrárias (Online) |
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In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquidCinética da produção de gases e digestibilidade in vitro em dietas para ruminantes com diferentes níveis de líquido de casca de castanha de cajuAmmoniaAnacardic acidCardanolCardolGas production.AmôniaÁcido anacárdicoCardanolCardolProdução de gás.The aim of this study was to evaluate the effect of increasing levels of cashew nut shell liquid (CNSL) in ruminant diets on in vitro dry matter digestibility (IVDMD), gas production kinetics, ruminal fermentation parameters, ammoniacal nitrogen concentration (NH3-N), and pH of the artificial rumen contents. The experimental design was completely randomized in a factorial 5 x 4 + 1 design, with five concentrate levels (200, 400, 600, 800, and 1,000 g kg-1 DM) and four CNSL levels (0, 0.3, 0.6, and 1.2 g kg-1 DM), as well as a control diet comprising only whole-plant corn silage, totaling 21 treatments. The inclusion of concentrate linearly increased IVDMD, while CNSL levels showed a quadratic effect, with the maximum estimated at 0.5 g kg-1 of CNSL. The total gas production, the disappearance of the substrate, the fraction of slow degradation (fraction VF2), and the respective degradation rate (fraction µ2) linearly increased with increasing levels of concentrate in the diet. Increasing concentrate levels resulted in a linear increase in the concentration of NH3-N and a reduction in the pH of the rumen liquid. Increasing CNSL levels decreased the concentration of NH3-N and increased the ruminal pH. The inclusion of 0.5 g CNSL kg-1 in the ruminant diets improved IVDMD, without altering the kinetic parameters of ruminal fermentation. The addition of CNSL to ruminant diets reduces ammoniacal nitrogen production and can avoid drastic reductions in ruminal pH, favoring better fermentation in the rumen.O objetivo deste estudo foi avaliar o efeito do líquido de casca de castanha de caju (LCC) na dieta de ruminantes com níveis crescentes de concentrado sobre a digestibilidade in vitro da matéria seca (DIVMS), cinética de produção de gases e parâmetros ruminais, concentração de nitrogênio amoniacal (N-NH3) e o pH do conteúdo do rúmen artificial. O delineamento experimental foi inteiramente casualizado, em arranjo factorial 5x4+1, com cinco níveis de concentrado (200, 400, 600, 800 e 1000 g kg-1MS) e quatro níveis de LCC (0, 0,3, 0,6 e 1,2 g kg-1 MS), e uma dieta controle, composta apenas por silagem de milho planta inteira, totalizando 21 tratamentos. A inclusão de concentrado aumentou linearmente a DIVMS, enquanto que os níveis LCC mostraram um efeito quadrático, com o máximo estimado de 0,5 g kg-1 de LCC. A produção total de gás, o desaparecimento do substrato, a fracção de degradação lenta (fracção VF2) e a respectiva taxa de degradação (fracção ?2) aumentaram de forma linear com aumento crescente dos níveis de concentrado na dieta. O aumento dos níveis de concentrado resultou em aumento linear na concentração de N-NH3 e na redução no pH do líquido ruminal. O aumento da concentração LCC reduziu os níveis de N-NH3 e aumentou o pH do rúmen. A inclusão de 0,5 g kg-1 de LCC na dieta dos ruminantes melhorou a DIVMS, sem alterar os parâmetros cinéticos de fermentação ruminal. A adição de LCC na dieta de ruminantes reduz a produção de amônia e evitou reduções drásticas no pH ruminal, favorecendo uma melhor fermentação no rúmen.UEL2018-08-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionScientific researchScientific researchapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2965210.5433/1679-0359.2018v39n4p1669Semina: Ciências Agrárias; Vol. 39 No. 4 (2018); 1669-1682Semina: Ciências Agrárias; v. 39 n. 4 (2018); 1669-16821679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29652/23987Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessDíaz, Tatiana GarcíaBranco, Antonio FerrianiÍtavo, Luís Carlos VinhasSantos, Geraldo Tadeu dosCarvalho, Silvana TeixeiraTeodoro, Ana LúciaOliveira, Ronaldo Lopes2022-10-20T19:58:25Zoai:ojs.pkp.sfu.ca:article/29652Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T19:58:25Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid Cinética da produção de gases e digestibilidade in vitro em dietas para ruminantes com diferentes níveis de líquido de casca de castanha de caju |
title |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid |
spellingShingle |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid Díaz, Tatiana García Ammonia Anacardic acid Cardanol Cardol Gas production. Amônia Ácido anacárdico Cardanol Cardol Produção de gás. |
title_short |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid |
title_full |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid |
title_fullStr |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid |
title_full_unstemmed |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid |
title_sort |
In vitro gas production kinetics and digestibility in ruminant diets with different levels of cashew nut shell liquid |
author |
Díaz, Tatiana García |
author_facet |
Díaz, Tatiana García Branco, Antonio Ferriani Ítavo, Luís Carlos Vinhas Santos, Geraldo Tadeu dos Carvalho, Silvana Teixeira Teodoro, Ana Lúcia Oliveira, Ronaldo Lopes |
author_role |
author |
author2 |
Branco, Antonio Ferriani Ítavo, Luís Carlos Vinhas Santos, Geraldo Tadeu dos Carvalho, Silvana Teixeira Teodoro, Ana Lúcia Oliveira, Ronaldo Lopes |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Díaz, Tatiana García Branco, Antonio Ferriani Ítavo, Luís Carlos Vinhas Santos, Geraldo Tadeu dos Carvalho, Silvana Teixeira Teodoro, Ana Lúcia Oliveira, Ronaldo Lopes |
dc.subject.por.fl_str_mv |
Ammonia Anacardic acid Cardanol Cardol Gas production. Amônia Ácido anacárdico Cardanol Cardol Produção de gás. |
topic |
Ammonia Anacardic acid Cardanol Cardol Gas production. Amônia Ácido anacárdico Cardanol Cardol Produção de gás. |
description |
The aim of this study was to evaluate the effect of increasing levels of cashew nut shell liquid (CNSL) in ruminant diets on in vitro dry matter digestibility (IVDMD), gas production kinetics, ruminal fermentation parameters, ammoniacal nitrogen concentration (NH3-N), and pH of the artificial rumen contents. The experimental design was completely randomized in a factorial 5 x 4 + 1 design, with five concentrate levels (200, 400, 600, 800, and 1,000 g kg-1 DM) and four CNSL levels (0, 0.3, 0.6, and 1.2 g kg-1 DM), as well as a control diet comprising only whole-plant corn silage, totaling 21 treatments. The inclusion of concentrate linearly increased IVDMD, while CNSL levels showed a quadratic effect, with the maximum estimated at 0.5 g kg-1 of CNSL. The total gas production, the disappearance of the substrate, the fraction of slow degradation (fraction VF2), and the respective degradation rate (fraction µ2) linearly increased with increasing levels of concentrate in the diet. Increasing concentrate levels resulted in a linear increase in the concentration of NH3-N and a reduction in the pH of the rumen liquid. Increasing CNSL levels decreased the concentration of NH3-N and increased the ruminal pH. The inclusion of 0.5 g CNSL kg-1 in the ruminant diets improved IVDMD, without altering the kinetic parameters of ruminal fermentation. The addition of CNSL to ruminant diets reduces ammoniacal nitrogen production and can avoid drastic reductions in ruminal pH, favoring better fermentation in the rumen. |
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 Scientific research Scientific research |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29652 10.5433/1679-0359.2018v39n4p1669 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/29652 |
identifier_str_mv |
10.5433/1679-0359.2018v39n4p1669 |
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/29652/23987 |
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); 1669-1682 Semina: Ciências Agrárias; v. 39 n. 4 (2018); 1669-1682 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_ |
1799306077846634496 |