Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats

Milk fat composition can be modulated by the inclusion of lipid supplements in ruminant diets. An interaction between the lipid supplement and the forage to concentrate ratio or the type of forage in the rations may affect milk fat composition. However, little is known about the effects of the starc...

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Autores: Gómez-Cortés, Pilar, Cívico, Alfonso, Fuente, Miguel Ángel de la, Núñez Sánchez, Nieves, Peña Blanco, Francisco, Martínez Marín, A. L.
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/192639
Acesso em linha:http://hdl.handle.net/10261/192639
Access Level:acceso abierto
Palavra-chave:Starch
Fiber
Ruminants
Conjugated linoleic acids
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spelling Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goatsGómez-Cortés, PilarCívico, AlfonsoFuente, Miguel Ángel de laNúñez Sánchez, NievesPeña Blanco, FranciscoMartínez Marín, A. L.StarchFiberRuminantsConjugated linoleic acidsMilk fat composition can be modulated by the inclusion of lipid supplements in ruminant diets. An interaction between the lipid supplement and the forage to concentrate ratio or the type of forage in the rations may affect milk fat composition. However, little is known about the effects of the starch-to-non-forage NDF ratio in the concentrate and lipid supplementation of goat diets. The aim of this work was to determine the role of dietary carbohydrates in goats rations supplemented with linseed oil on animal performance and milk fatty acid (FA) profile. A total of 16 dairy goats were allocated to two simultaneous experiments (two treatments each), in a crossover design with four animals per treatment and two experimental periods of 25 days. In both experiments alfalfa hay was the sole forage and the forage to concentrate ratio (33:67) remained constant. The concentrate in experiment 1 consisted of barley, maize and soybean meal (concentrate rich in starch), whereas it included soybean hulls replacing 25% of barley and 25% maize in experiment 2 (concentrate rich in NDF). As a result, the starch-to-non-forage NDF ratio was 3.1 in experiment 1 and it decreased to 0.8 in experiment 2. Both concentrates were administered either alone or in combination with 30 g/day of linseed oil. Animal performance parameters were not affected by experimental treatments. In contrast, major changes were observed in milk FA profile due to lipid supplementation and the type of concentrate. Linseed oil significantly raised vaccenic and rumenic acids as well as α-linolenic acid and its biohydrogenation intermediates while decreased medium-chain saturated FA (12:0 to 16:0) in milk fat. Milk fat contents of odd and branched-chain FA and trans-10 18:1 responded differently to linseed oil supplementation according to the concentrate fed.This work was supported by the Spanish Ministry of Economy and Competitiveness (Project AGL2016-75159-C2-2-R). Pilar GómezCortés was subsidized with a Juan de la Cierva-Incorporación contract (IJCI-2014-19512).Peer reviewedCambridge University PressMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/192639reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2016-75159-C2-2-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/IJCI-2014-19512https://doi.org/10.1017/S1751731118000381Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1926392026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
title Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
spellingShingle Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
Gómez-Cortés, Pilar
Starch
Fiber
Ruminants
Conjugated linoleic acids
title_short Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
title_full Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
title_fullStr Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
title_full_unstemmed Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
title_sort Effects of dietary concentrate composition and linseed oil supplementation on the milk fatty acid profile of goats
dc.creator.none.fl_str_mv Gómez-Cortés, Pilar
Cívico, Alfonso
Fuente, Miguel Ángel de la
Núñez Sánchez, Nieves
Peña Blanco, Francisco
Martínez Marín, A. L.
author Gómez-Cortés, Pilar
author_facet Gómez-Cortés, Pilar
Cívico, Alfonso
Fuente, Miguel Ángel de la
Núñez Sánchez, Nieves
Peña Blanco, Francisco
Martínez Marín, A. L.
author_role author
author2 Cívico, Alfonso
Fuente, Miguel Ángel de la
Núñez Sánchez, Nieves
Peña Blanco, Francisco
Martínez Marín, A. L.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Starch
Fiber
Ruminants
Conjugated linoleic acids
topic Starch
Fiber
Ruminants
Conjugated linoleic acids
description Milk fat composition can be modulated by the inclusion of lipid supplements in ruminant diets. An interaction between the lipid supplement and the forage to concentrate ratio or the type of forage in the rations may affect milk fat composition. However, little is known about the effects of the starch-to-non-forage NDF ratio in the concentrate and lipid supplementation of goat diets. The aim of this work was to determine the role of dietary carbohydrates in goats rations supplemented with linseed oil on animal performance and milk fatty acid (FA) profile. A total of 16 dairy goats were allocated to two simultaneous experiments (two treatments each), in a crossover design with four animals per treatment and two experimental periods of 25 days. In both experiments alfalfa hay was the sole forage and the forage to concentrate ratio (33:67) remained constant. The concentrate in experiment 1 consisted of barley, maize and soybean meal (concentrate rich in starch), whereas it included soybean hulls replacing 25% of barley and 25% maize in experiment 2 (concentrate rich in NDF). As a result, the starch-to-non-forage NDF ratio was 3.1 in experiment 1 and it decreased to 0.8 in experiment 2. Both concentrates were administered either alone or in combination with 30 g/day of linseed oil. Animal performance parameters were not affected by experimental treatments. In contrast, major changes were observed in milk FA profile due to lipid supplementation and the type of concentrate. Linseed oil significantly raised vaccenic and rumenic acids as well as α-linolenic acid and its biohydrogenation intermediates while decreased medium-chain saturated FA (12:0 to 16:0) in milk fat. Milk fat contents of odd and branched-chain FA and trans-10 18:1 responded differently to linseed oil supplementation according to the concentrate fed.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/192639
url http://hdl.handle.net/10261/192639
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2016-75159-C2-2-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/IJCI-2014-19512
https://doi.org/10.1017/S1751731118000381
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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