Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil

Detalhes bibliográficos
Autor(a) principal: Lopes, Fernando César Ferraz
Data de Publicação: 2020
Outros Autores: Souza, Shirley Motta de, Valadares Filho, Sebastião de Campos, Gama, Marco Antônio Sundfeld da, Rennó, Luciana Navajas
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/38432
Resumo: This study evaluates the intake and digestion of nutrients, parameters of rumen fermentation and degradation, omasal digesta and milk fatty acid composition, productive performance, and the concentration of serum metabolites in cows fed 600 g kg-1 sugarcane-based diets containing 0 (control), 15, 30, and 45 g kg-1 sunflower oil (SO) on a dry matter (DM) basis. Four rumen-cannulated Holstein x Gyr cows yielding 15±5 kg day-1 with 110±10 days in milk were allocated in a 4 x 4 Latin square design. Data were analyzed using mixed models, and significant differences were declared at P < 0.05. There was no effect of SO on the intake and apparent digestibility of DM, crude protein, neutral detergent fiber (NDF) and nonfibrous carbohydrates, but there was a linear increase in the intake and digestibility of ether extract. Dietary SO levels did not alter the ruminal degradability parameters for DM and NDF, rumen pH and contents of ammonia N, acetate, propionate and volatile fatty acids. Milk fat content and yield were linearly decreased, whereas a linear increase in milk protein content was observed in response to increasing levels of SO, but with no effect on milk yield. Linear reductions in palmitic and ?-linolenic acid contents, a linear increase in trans-10 C18:1 and elaidic acids, and a quadratic effect on vaccenic and rumenic acids were observed in omasal digesta of cows fed increasing levels of SO. Overall, up to 45 g kg-1 SO can be included on DM of chopped sugarcane-based diets without reducing consumption, apparent digestibility and rumen degradability of DM and fiber. Supplementing chopped sugarcane-based diets with 30 to 45 g kg-1 SO (DM basis) promotes milk fat depression due to the inhibition of mammary lipogenesis by specific rumen-derived fatty acid intermediates of the biohydrogenation of unsaturated C18 fatty acids. The inclusion of 15 to 45 g kg-1 SO in chopped sugarcane-based diets improves the nutritional quality of milk fat, with increases in the levels of oleic, vaccenic and rumenic acids, beneficial to human health, and a reduction in the levels of the hypercholesterolemic lauric, myristic and palmitic acids.
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spelling Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oilParâmetros ruminais e perfil de ácidos graxos da digesta omasal e do leite de vacas alimentadas com dietas à base de cana de açúcar suplementadas com óleo de girassolConjugated linoleic acidRumenic acidSaccharum officinarumVaccenic acid.Ácido linoleico conjugadoÁcido rumênicoÁcido vacênicoSaccharum officinarum.This study evaluates the intake and digestion of nutrients, parameters of rumen fermentation and degradation, omasal digesta and milk fatty acid composition, productive performance, and the concentration of serum metabolites in cows fed 600 g kg-1 sugarcane-based diets containing 0 (control), 15, 30, and 45 g kg-1 sunflower oil (SO) on a dry matter (DM) basis. Four rumen-cannulated Holstein x Gyr cows yielding 15±5 kg day-1 with 110±10 days in milk were allocated in a 4 x 4 Latin square design. Data were analyzed using mixed models, and significant differences were declared at P < 0.05. There was no effect of SO on the intake and apparent digestibility of DM, crude protein, neutral detergent fiber (NDF) and nonfibrous carbohydrates, but there was a linear increase in the intake and digestibility of ether extract. Dietary SO levels did not alter the ruminal degradability parameters for DM and NDF, rumen pH and contents of ammonia N, acetate, propionate and volatile fatty acids. Milk fat content and yield were linearly decreased, whereas a linear increase in milk protein content was observed in response to increasing levels of SO, but with no effect on milk yield. Linear reductions in palmitic and ?-linolenic acid contents, a linear increase in trans-10 C18:1 and elaidic acids, and a quadratic effect on vaccenic and rumenic acids were observed in omasal digesta of cows fed increasing levels of SO. Overall, up to 45 g kg-1 SO can be included on DM of chopped sugarcane-based diets without reducing consumption, apparent digestibility and rumen degradability of DM and fiber. Supplementing chopped sugarcane-based diets with 30 to 45 g kg-1 SO (DM basis) promotes milk fat depression due to the inhibition of mammary lipogenesis by specific rumen-derived fatty acid intermediates of the biohydrogenation of unsaturated C18 fatty acids. The inclusion of 15 to 45 g kg-1 SO in chopped sugarcane-based diets improves the nutritional quality of milk fat, with increases in the levels of oleic, vaccenic and rumenic acids, beneficial to human health, and a reduction in the levels of the hypercholesterolemic lauric, myristic and palmitic acids.O objetivo deste estudo foi avaliar o consumo e a digestão dos nutrientes, os parâmetros de fermentação e degradação ruminal, o perfil de ácidos graxos da digesta omasal e do leite, o desempenho produtivo e as concentrações séricas de metabólitos em vacas alimentadas com dietas à base de 600 g kg-1 de cana de açúcar com 0 (controle), 15, 30 e 45 g kg-1 de óleo de girassol (OG) na base da matéria seca (MS). Foram utilizadas quatro vacas Holandês x Gir com 110±10 dias em lactação, produzindo 15±5 kg dia-1 de leite, canuladas no rúmen, e alocadas em delineamento Quadrado Latino 4 x 4. Os resultados foram analisados por modelos mistos e efeitos considerados significativos quando P < 0,05. Não houve efeito do OG no consumo e digestibilidade aparente da MS, proteína bruta, fibra em detergente neutro (FDN) e carboidratos não fibrosos, mas houve aumento linear no consumo e digestibilidade aparente do extrato etéreo. Não houve efeito do OG sobre os parâmetros de degradabilidade da MS e FDN, sobre o pH do rúmen nem sobre as concentrações ruminais de N amoniacal, acetato, propionato e ácidos graxos voláteis totais. O OG promoveu redução linear no teor e na produção de gordura do leite, aumento linear no teor de proteína do leite, mas não houve efeito sobre a produção de leite. Na digesta omasal, o OG promoveu reduções lineares nos teores dos ácidos palmítico e ?-linolênico, aumentos lineares nos teores dos ácidos elaídico e C18:1 trans-10, e efeito quadrático nos teores dos ácidos vacênico e rumênico. Concluindo, até 45 g kg-1 de OG pode ser incluído na MS de dietas à base de cana de açúcar picada, sem reduzir o consumo, a digestibilidade aparente a degradabilidade ruminal da MS e da fibra. A suplementação da MS de dietas à base de cana de açúcar picada com 30 a 45 g kg-1 de óleo de girassol promove redução no teor de gordura do leite, devido à inibição da lipogênese mamária por específicos ácidos graxos formados no rúmen a partir da bio-hidrogenação de ácidos graxos insaturados C18. A inclusão de 15 a 45 g kg-1 de óleo de girassol em dietas à base de cana de açúcar picada melhora a qualidade nutricional da gordura do leite, com aumentos nos teores dos ácidos oleico, vacênico e rumênico, que são benéficos para a saúde humana, e redução nos teores dos ácidos hipercolesterolêmicos láurico, mirístico e palmítico.UEL2020-08-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3843210.5433/1679-0359.2020v41n5supl1p2317Semina: Ciências Agrárias; Vol. 41 No. 5supl1 (2020); 2317-2334Semina: Ciências Agrárias; v. 41 n. 5supl1 (2020); 2317-23341679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/38432/27808Copyright (c) 2020 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessLopes, Fernando César FerrazSouza, Shirley Motta deValadares Filho, Sebastião de CamposGama, Marco Antônio Sundfeld daRennó, Luciana Navajas2022-10-07T14:03:44Zoai:ojs.pkp.sfu.ca:article/38432Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-07T14:03:44Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
Parâmetros ruminais e perfil de ácidos graxos da digesta omasal e do leite de vacas alimentadas com dietas à base de cana de açúcar suplementadas com óleo de girassol
title Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
spellingShingle Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
Lopes, Fernando César Ferraz
Conjugated linoleic acid
Rumenic acid
Saccharum officinarum
Vaccenic acid.
Ácido linoleico conjugado
Ácido rumênico
Ácido vacênico
Saccharum officinarum.
title_short Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
title_full Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
title_fullStr Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
title_full_unstemmed Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
title_sort Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
author Lopes, Fernando César Ferraz
author_facet Lopes, Fernando César Ferraz
Souza, Shirley Motta de
Valadares Filho, Sebastião de Campos
Gama, Marco Antônio Sundfeld da
Rennó, Luciana Navajas
author_role author
author2 Souza, Shirley Motta de
Valadares Filho, Sebastião de Campos
Gama, Marco Antônio Sundfeld da
Rennó, Luciana Navajas
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Lopes, Fernando César Ferraz
Souza, Shirley Motta de
Valadares Filho, Sebastião de Campos
Gama, Marco Antônio Sundfeld da
Rennó, Luciana Navajas
dc.subject.por.fl_str_mv Conjugated linoleic acid
Rumenic acid
Saccharum officinarum
Vaccenic acid.
Ácido linoleico conjugado
Ácido rumênico
Ácido vacênico
Saccharum officinarum.
topic Conjugated linoleic acid
Rumenic acid
Saccharum officinarum
Vaccenic acid.
Ácido linoleico conjugado
Ácido rumênico
Ácido vacênico
Saccharum officinarum.
description This study evaluates the intake and digestion of nutrients, parameters of rumen fermentation and degradation, omasal digesta and milk fatty acid composition, productive performance, and the concentration of serum metabolites in cows fed 600 g kg-1 sugarcane-based diets containing 0 (control), 15, 30, and 45 g kg-1 sunflower oil (SO) on a dry matter (DM) basis. Four rumen-cannulated Holstein x Gyr cows yielding 15±5 kg day-1 with 110±10 days in milk were allocated in a 4 x 4 Latin square design. Data were analyzed using mixed models, and significant differences were declared at P < 0.05. There was no effect of SO on the intake and apparent digestibility of DM, crude protein, neutral detergent fiber (NDF) and nonfibrous carbohydrates, but there was a linear increase in the intake and digestibility of ether extract. Dietary SO levels did not alter the ruminal degradability parameters for DM and NDF, rumen pH and contents of ammonia N, acetate, propionate and volatile fatty acids. Milk fat content and yield were linearly decreased, whereas a linear increase in milk protein content was observed in response to increasing levels of SO, but with no effect on milk yield. Linear reductions in palmitic and ?-linolenic acid contents, a linear increase in trans-10 C18:1 and elaidic acids, and a quadratic effect on vaccenic and rumenic acids were observed in omasal digesta of cows fed increasing levels of SO. Overall, up to 45 g kg-1 SO can be included on DM of chopped sugarcane-based diets without reducing consumption, apparent digestibility and rumen degradability of DM and fiber. Supplementing chopped sugarcane-based diets with 30 to 45 g kg-1 SO (DM basis) promotes milk fat depression due to the inhibition of mammary lipogenesis by specific rumen-derived fatty acid intermediates of the biohydrogenation of unsaturated C18 fatty acids. The inclusion of 15 to 45 g kg-1 SO in chopped sugarcane-based diets improves the nutritional quality of milk fat, with increases in the levels of oleic, vaccenic and rumenic acids, beneficial to human health, and a reduction in the levels of the hypercholesterolemic lauric, myristic and palmitic acids.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-07
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/38432
10.5433/1679-0359.2020v41n5supl1p2317
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/38432
identifier_str_mv 10.5433/1679-0359.2020v41n5supl1p2317
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/38432/27808
dc.rights.driver.fl_str_mv Copyright (c) 2020 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 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. 41 No. 5supl1 (2020); 2317-2334
Semina: Ciências Agrárias; v. 41 n. 5supl1 (2020); 2317-2334
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
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