Ruminal parameters and fatty acid composition of omasal digesta and milk in cows fed sugarcane-based diets supplemented with sunflower oil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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/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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Semina. Ciências Agrárias (Online) |
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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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1799306082302033920 |