Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation.
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1162600 http://dx.doi.org/10.5433/1679-0359.2024v45n1p71 |
Resumo: | This study evaluated the effects of energy supplementation on the intake and milk fatty acid composition of cows grazing BRS Kurumi elephant grass pasture during the rainy season. Two treatments (with and without supplementation) were evaluated using a switchback design with six Holstein × Gyr dairy cows after the peak of lactation. The average milk yield, body weight, and days in milk of the cows at the beginning of the study were 18.0±2.89 kg day−1, 560±66 kg, and 99±12, respectively. The evaluations were performed over three grazing cycles, with adaptation periods of 14 days and six days of sampling. In the energy supplementation treatment, each cow received 3 kg day−1 of ground corn (as-fed basis), with 2 kg day−1 at the morning milking and 1 kg day−1 at the afternoon milking. The ground corn presented 87.5% dry matter, 7.3% crude protein, 5.1% ether extract, and 85% of total digestible nutrients. The cows supplemented with ground corn consumed more oleic (+567%) and linoleic (+88%) acids. Unsupplemented cows consumed 26% more α-linolenic acid and produced milk with more oleic (+10%), vaccenic (+23%), and rumenic (+21%) acids, and less (−7%) pro-atherogenic fatty acids (lauric + myristic + palmitic acids). Milk fat from unsupplemented cows showed better nutritional quality, with lower atherogenicity and thrombogenicity indices and a higher hypo/hypercholesterolemic fatty acid ratio. |
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Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation.Ácido linoleico conjugadoÁcido rumênicoCenchrus purpureusPennisetum PurpureumCapim ElefanteThis study evaluated the effects of energy supplementation on the intake and milk fatty acid composition of cows grazing BRS Kurumi elephant grass pasture during the rainy season. Two treatments (with and without supplementation) were evaluated using a switchback design with six Holstein × Gyr dairy cows after the peak of lactation. The average milk yield, body weight, and days in milk of the cows at the beginning of the study were 18.0±2.89 kg day−1, 560±66 kg, and 99±12, respectively. The evaluations were performed over three grazing cycles, with adaptation periods of 14 days and six days of sampling. In the energy supplementation treatment, each cow received 3 kg day−1 of ground corn (as-fed basis), with 2 kg day−1 at the morning milking and 1 kg day−1 at the afternoon milking. The ground corn presented 87.5% dry matter, 7.3% crude protein, 5.1% ether extract, and 85% of total digestible nutrients. The cows supplemented with ground corn consumed more oleic (+567%) and linoleic (+88%) acids. Unsupplemented cows consumed 26% more α-linolenic acid and produced milk with more oleic (+10%), vaccenic (+23%), and rumenic (+21%) acids, and less (−7%) pro-atherogenic fatty acids (lauric + myristic + palmitic acids). Milk fat from unsupplemented cows showed better nutritional quality, with lower atherogenicity and thrombogenicity indices and a higher hypo/hypercholesterolemic fatty acid ratio.FERNANDO CESAR FERRAZ LOPES, CNPGL; CONRADO TRIGO DE MORAES, CENTRAL NORTE RAÇÕES; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL.LOPES, F. C. F.MORAES, C. T. deGOMIDE, C. A. de M.PACIULLO, D. S. C.MORENZ, M. J. F.2024-03-06T11:32:35Z2024-03-06T11:32:35Z2024-03-052024info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSemina: Ciências Agrárias, v. 45, n. 1, p. 71-86, jan./fev. 2024.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1162600http://dx.doi.org/10.5433/1679-0359.2024v45n1p71enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2024-03-06T11:32:36Zoai:www.alice.cnptia.embrapa.br:doc/1162600Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542024-03-06T11:32:36falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542024-03-06T11:32:36Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
title |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
spellingShingle |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. LOPES, F. C. F. Ácido linoleico conjugado Ácido rumênico Cenchrus purpureus Pennisetum Purpureum Capim Elefante |
title_short |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
title_full |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
title_fullStr |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
title_full_unstemmed |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
title_sort |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
author |
LOPES, F. C. F. |
author_facet |
LOPES, F. C. F. MORAES, C. T. de GOMIDE, C. A. de M. PACIULLO, D. S. C. MORENZ, M. J. F. |
author_role |
author |
author2 |
MORAES, C. T. de GOMIDE, C. A. de M. PACIULLO, D. S. C. MORENZ, M. J. F. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
FERNANDO CESAR FERRAZ LOPES, CNPGL; CONRADO TRIGO DE MORAES, CENTRAL NORTE RAÇÕES; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL. |
dc.contributor.author.fl_str_mv |
LOPES, F. C. F. MORAES, C. T. de GOMIDE, C. A. de M. PACIULLO, D. S. C. MORENZ, M. J. F. |
dc.subject.por.fl_str_mv |
Ácido linoleico conjugado Ácido rumênico Cenchrus purpureus Pennisetum Purpureum Capim Elefante |
topic |
Ácido linoleico conjugado Ácido rumênico Cenchrus purpureus Pennisetum Purpureum Capim Elefante |
description |
This study evaluated the effects of energy supplementation on the intake and milk fatty acid composition of cows grazing BRS Kurumi elephant grass pasture during the rainy season. Two treatments (with and without supplementation) were evaluated using a switchback design with six Holstein × Gyr dairy cows after the peak of lactation. The average milk yield, body weight, and days in milk of the cows at the beginning of the study were 18.0±2.89 kg day−1, 560±66 kg, and 99±12, respectively. The evaluations were performed over three grazing cycles, with adaptation periods of 14 days and six days of sampling. In the energy supplementation treatment, each cow received 3 kg day−1 of ground corn (as-fed basis), with 2 kg day−1 at the morning milking and 1 kg day−1 at the afternoon milking. The ground corn presented 87.5% dry matter, 7.3% crude protein, 5.1% ether extract, and 85% of total digestible nutrients. The cows supplemented with ground corn consumed more oleic (+567%) and linoleic (+88%) acids. Unsupplemented cows consumed 26% more α-linolenic acid and produced milk with more oleic (+10%), vaccenic (+23%), and rumenic (+21%) acids, and less (−7%) pro-atherogenic fatty acids (lauric + myristic + palmitic acids). Milk fat from unsupplemented cows showed better nutritional quality, with lower atherogenicity and thrombogenicity indices and a higher hypo/hypercholesterolemic fatty acid ratio. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-03-06T11:32:35Z 2024-03-06T11:32:35Z 2024-03-05 2024 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Semina: Ciências Agrárias, v. 45, n. 1, p. 71-86, jan./fev. 2024. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1162600 http://dx.doi.org/10.5433/1679-0359.2024v45n1p71 |
identifier_str_mv |
Semina: Ciências Agrárias, v. 45, n. 1, p. 71-86, jan./fev. 2024. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1162600 http://dx.doi.org/10.5433/1679-0359.2024v45n1p71 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503558685523968 |