Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding
Autor(a) principal: | |
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Data de Publicação: | 2021 |
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/41630 |
Resumo: | The study was carried out in a randomized block design, in a 2 x 2 factorial arrangement, with the aim to evaluating during 21 days the short-term changes in plasma and milk fatty acid (FA) profile in Holstein x Gyr cows (444±84 kg; 75±31 days in milk; 15.4±4.8 kg day-1 of milk) fed 600 g kg-1 DM chopped elephant grass-based diets supplemented with 45 g kg-1 DM sunflower oil (SO). Two types of SO were evaluated: high oleic/low linoleic acid (HO) and medium oleic/medium linoleic acid (MO). The concentrates containing the SO were supplied separately from the forage twice a day (TAD) or as part of a total mixed ration (TMR). Temporal changes were analyzed by mixed models (P<0.05) using six, four and seven repeated measures over time for FA intake, plasma and milk FA composition, respectively. There was higher oleic acid intake in HO SO-fed cows while higher linoleic and ?-linolenic acids intake was observed in MO SO-fed cows. The TAD-fed cows had higher plasma vaccenic acid content than TMR-fed cows, while MO SO-fed cows had higher plasma vaccenic and rumenic acid contents than HO-fed cows. As a function of the day, there were linear increases for oleic and linoleic acids intake, plasma contents of oleic, vaccenic and linoleic acids, and milk fat content of linoleic acid, while quadratic effects were adjusted for milk fat contents of palmitic, oleic, vaccenic and rumenic acids. In comparison with TMR-fed cows, the milk fat of TAD-fed cows produced between days 13-17 showed a FA profile more nutritionally desirable for human health with lower contents of hypercholesterolemics FAs and higher contents of oleic, rumenic and vaccenic acids. Between days 15-16, the vaccenic and rumenic acids contents in milk fat of MO SO-fed cows were 81% higher than that obtained from HO SO-fed cows, which on the 14th day, had 14% higher oleic acid content in milk fat. Lower milk fat level of hypercholesterolemic FAs was produced between days 13-14 by cows fed with both types of SO. |
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Semina. Ciências Agrárias (Online) |
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Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feedingMudanças de curto prazo no perfil de ácidos graxos do plasma e leite de vacas alimentadas com dietas à base de capim-elefante picado, dois tipos de óleo de girassol e dois modos de fornecimento do concentradoConjugated Linoleic AcidOleic AcidPennisetum purpureumRumenic AcidTMR.Ácido linoleico conjugadoÁcido oleicoÁcido rumênicoPennisetum purpureumTMR.The study was carried out in a randomized block design, in a 2 x 2 factorial arrangement, with the aim to evaluating during 21 days the short-term changes in plasma and milk fatty acid (FA) profile in Holstein x Gyr cows (444±84 kg; 75±31 days in milk; 15.4±4.8 kg day-1 of milk) fed 600 g kg-1 DM chopped elephant grass-based diets supplemented with 45 g kg-1 DM sunflower oil (SO). Two types of SO were evaluated: high oleic/low linoleic acid (HO) and medium oleic/medium linoleic acid (MO). The concentrates containing the SO were supplied separately from the forage twice a day (TAD) or as part of a total mixed ration (TMR). Temporal changes were analyzed by mixed models (P<0.05) using six, four and seven repeated measures over time for FA intake, plasma and milk FA composition, respectively. There was higher oleic acid intake in HO SO-fed cows while higher linoleic and ?-linolenic acids intake was observed in MO SO-fed cows. The TAD-fed cows had higher plasma vaccenic acid content than TMR-fed cows, while MO SO-fed cows had higher plasma vaccenic and rumenic acid contents than HO-fed cows. As a function of the day, there were linear increases for oleic and linoleic acids intake, plasma contents of oleic, vaccenic and linoleic acids, and milk fat content of linoleic acid, while quadratic effects were adjusted for milk fat contents of palmitic, oleic, vaccenic and rumenic acids. In comparison with TMR-fed cows, the milk fat of TAD-fed cows produced between days 13-17 showed a FA profile more nutritionally desirable for human health with lower contents of hypercholesterolemics FAs and higher contents of oleic, rumenic and vaccenic acids. Between days 15-16, the vaccenic and rumenic acids contents in milk fat of MO SO-fed cows were 81% higher than that obtained from HO SO-fed cows, which on the 14th day, had 14% higher oleic acid content in milk fat. Lower milk fat level of hypercholesterolemic FAs was produced between days 13-14 by cows fed with both types of SO.O estudo foi realizado em delineamento de blocos ao acaso, em esquema fatorial 2 x 2, para avaliar, durante 21 dias, as mudanças no perfil de ácidos graxos (AG) do plasma e leite de vacas Holandês x Gir (444±84 kg; 75±31 dias em lactação; 15,4±4,8 kg dia -1 de leite), recebendo dietas à base de 600 g kg-1 de capim-elefante picado, suplementadas com 45 g kg -1 de óleo de girassol (OG), na base da matéria seca. Foram avaliados dois tipos de OG: com alto teor de ácido oleico/baixo teor de ácido linoleico (HO) e com teores médios dos ácidos oleico e linoleico (MO). Os concentrados com OG foram fornecidos separadamente da forragem, duas vezes ao dia (TAD), ou como parte de uma dieta completa (TMR). Utilizando modelos mistos, as alterações temporais (P < 0,05) foram analisadas por meio de seis, quatro e sete medidas repetidas no tempo para consumo de AG e perfil de AG no plasma e no leite, respectivamente. As vacas que receberam OG HO consumiram mais ácido oleico, e maiores consumos dos ácidos linoleico e alfa-linolênico foram observados nas que receberam OG MO. Plasma com maior teor de ácido vacênico foi observado nas vacas que receberam concentrado TAD, enquanto que as que receberam OG MO apresentaram plasma com maiores teores dos ácidos vacênico e rumênico. Em função do dia, houve aumento linear nos consumos dos ácidos oleico e linoleico, nos teores plasmáticos dos ácidos oleico, vacênico e linoleico, e no teor de ácido linoleico no leite, e houve ajuste quadrático para os teores dos ácidos palmítico, oleico, vacênico e rumênico no leite. Em comparação com as vacas alimentadas com TMR, o leite obtido entre os dias 13 e 17 das que receberam concentrado TAD apresentou perfil de AG mais nutricionalmente desejável para a saúde humana, com menor teor de AG hipercolesterolêmicos e maiores teores dos ácidos oleico, rumênico e vacênico. Entre os dias 15 e 16, os teores dos ácidos vacênico e rumênico no leite das vacas que receberam OG MO foi 81% maior que o das que receberam OG HO, as quais, no dia 14, apresentaram teor de ácido oleico 14% maior. O leite produzido entre os dias 13 e 14 apresentou o menor teor de AG hipercolesterolêmicos.UEL2021-04-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4163010.5433/1679-0359.2021v42n3Supl1p1853Semina: Ciências Agrárias; Vol. 42 No. 3Supl1 (2021); 1853-1878Semina: Ciências Agrárias; v. 42 n. 3Supl1 (2021); 1853-18781679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41630/29462Copyright (c) 2021 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessLopes, Fernando César FerrazRibeiro, Carlos Gustavo SantosRodriguez, Norberto MarioGama, Marco Antônio Sundfeld daMorenz, Mirton José Frota2022-09-30T16:35:17Zoai:ojs.pkp.sfu.ca:article/41630Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-09-30T16:35:17Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding Mudanças de curto prazo no perfil de ácidos graxos do plasma e leite de vacas alimentadas com dietas à base de capim-elefante picado, dois tipos de óleo de girassol e dois modos de fornecimento do concentrado |
title |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding |
spellingShingle |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding Lopes, Fernando César Ferraz Conjugated Linoleic Acid Oleic Acid Pennisetum purpureum Rumenic Acid TMR. Ácido linoleico conjugado Ácido oleico Ácido rumênico Pennisetum purpureum TMR. |
title_short |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding |
title_full |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding |
title_fullStr |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding |
title_full_unstemmed |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding |
title_sort |
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped elephant grass-based diets containing two types of sunflower oil associated with two methods of concentrate feeding |
author |
Lopes, Fernando César Ferraz |
author_facet |
Lopes, Fernando César Ferraz Ribeiro, Carlos Gustavo Santos Rodriguez, Norberto Mario Gama, Marco Antônio Sundfeld da Morenz, Mirton José Frota |
author_role |
author |
author2 |
Ribeiro, Carlos Gustavo Santos Rodriguez, Norberto Mario Gama, Marco Antônio Sundfeld da Morenz, Mirton José Frota |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lopes, Fernando César Ferraz Ribeiro, Carlos Gustavo Santos Rodriguez, Norberto Mario Gama, Marco Antônio Sundfeld da Morenz, Mirton José Frota |
dc.subject.por.fl_str_mv |
Conjugated Linoleic Acid Oleic Acid Pennisetum purpureum Rumenic Acid TMR. Ácido linoleico conjugado Ácido oleico Ácido rumênico Pennisetum purpureum TMR. |
topic |
Conjugated Linoleic Acid Oleic Acid Pennisetum purpureum Rumenic Acid TMR. Ácido linoleico conjugado Ácido oleico Ácido rumênico Pennisetum purpureum TMR. |
description |
The study was carried out in a randomized block design, in a 2 x 2 factorial arrangement, with the aim to evaluating during 21 days the short-term changes in plasma and milk fatty acid (FA) profile in Holstein x Gyr cows (444±84 kg; 75±31 days in milk; 15.4±4.8 kg day-1 of milk) fed 600 g kg-1 DM chopped elephant grass-based diets supplemented with 45 g kg-1 DM sunflower oil (SO). Two types of SO were evaluated: high oleic/low linoleic acid (HO) and medium oleic/medium linoleic acid (MO). The concentrates containing the SO were supplied separately from the forage twice a day (TAD) or as part of a total mixed ration (TMR). Temporal changes were analyzed by mixed models (P<0.05) using six, four and seven repeated measures over time for FA intake, plasma and milk FA composition, respectively. There was higher oleic acid intake in HO SO-fed cows while higher linoleic and ?-linolenic acids intake was observed in MO SO-fed cows. The TAD-fed cows had higher plasma vaccenic acid content than TMR-fed cows, while MO SO-fed cows had higher plasma vaccenic and rumenic acid contents than HO-fed cows. As a function of the day, there were linear increases for oleic and linoleic acids intake, plasma contents of oleic, vaccenic and linoleic acids, and milk fat content of linoleic acid, while quadratic effects were adjusted for milk fat contents of palmitic, oleic, vaccenic and rumenic acids. In comparison with TMR-fed cows, the milk fat of TAD-fed cows produced between days 13-17 showed a FA profile more nutritionally desirable for human health with lower contents of hypercholesterolemics FAs and higher contents of oleic, rumenic and vaccenic acids. Between days 15-16, the vaccenic and rumenic acids contents in milk fat of MO SO-fed cows were 81% higher than that obtained from HO SO-fed cows, which on the 14th day, had 14% higher oleic acid content in milk fat. Lower milk fat level of hypercholesterolemic FAs was produced between days 13-14 by cows fed with both types of SO. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-04-22 |
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/41630 10.5433/1679-0359.2021v42n3Supl1p1853 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41630 |
identifier_str_mv |
10.5433/1679-0359.2021v42n3Supl1p1853 |
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/41630/29462 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 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. 42 No. 3Supl1 (2021); 1853-1878 Semina: Ciências Agrárias; v. 42 n. 3Supl1 (2021); 1853-1878 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_ |
1799306084674961408 |