Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes

Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes

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1 página.-- Trabajo presentado al: Joint Seminar of the FAO-CIHEAM Network on Sheep and Goats. Joint Seminar of the Sub-Networks on Production Systems and on Nutrition: Innovation for Sustainability in Sheep and Goats, p. 78 (S2N-43). 3-5 de octubre de 2017. Vitoria-Gazteiz (España).

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Bibliographic Details
Main Authors: Rodríguez-López, Laura, Toral, Pablo G., Hervás, Gonzalo, Frutos, Pilar
Format: póster de congreso biblioteca
Language:English
Published: Food and Agriculture Organisation of the United Nations 2017
Subjects:Fat fluidity, Fatty acid composition, Marine lipid, Ruminant nutrition, Sheep,
Online Access:http://hdl.handle.net/10261/156203
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spelling dig-igm-es-10261-1562032022-12-15T14:10:25Z Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes Rodríguez-López, Laura Toral, Pablo G. Hervás, Gonzalo Frutos, Pilar Fat fluidity Fatty acid composition Marine lipid Ruminant nutrition Sheep 1 página.-- Trabajo presentado al: Joint Seminar of the FAO-CIHEAM Network on Sheep and Goats. Joint Seminar of the Sub-Networks on Production Systems and on Nutrition: Innovation for Sustainability in Sheep and Goats, p. 78 (S2N-43). 3-5 de octubre de 2017. Vitoria-Gazteiz (España). Despite the benefits of using marine lipid supplements in dairy ewe diets to modulate milk fatty acid (FA) composition, this strategy causes milk fat depression (MFD), which precludes its use under farm conditions. One theory trying to explain this type of MFD attributes the depression to an impaired capacity of the mammary gland to achieve an adequate melting point for milk fat secretion. This alteration of fluidity has been linked to a shortage of available ruminal 18:0 caused by the consumption of marine lipids. However, in a previous study, we were not able to prevent the effects of fish oil supplementation through concomitant dietary addition of stearic acid (2% DM). Yet, before ruling out a mechanism based on milk fat fluidity, we decided to try with a higher dose of 18:0. Thus, this assay was conducted with 12 lactating ewes divided in 3 treatments that lasted for 4 weeks: a total mixed ration without lipid supplementation (control) or supplemented with 20 g/kg DM of fish oil alone (FO) or in combination with 40 (FOSA4) g/kg DM of 18:0. As expected, FO supplementation modified milk FA composition towards a healthier profile for consumers but, at the same time, reduced milk fat concentration. This MFD was not alleviated by the addition of 4% 18:0 (FOSA4). Animal performance results are discussed in relation to milk FA composition, particularly to the concentration of metabolites responsible for changes in the melting point and fluidity of fat. Peer reviewed 2017-10-10T07:42:08Z 2017-10-10T07:42:08Z 2017 póster de congreso http://purl.org/coar/resource_type/c_6670 Joint Seminar of the FAO-CIHEAM Network on Sheep and Goats. Joint Seminar of the Sub-Networks on Production Systems and on Nutrition: Innovation for Sustainability in Sheep and Goats : 65 (2017) http://hdl.handle.net/10261/156203 en Publisher's version http://networks.iamz.ciheam.org/sgvitoria2017/en/ Sí open Food and Agriculture Organisation of the United Nations Centre international de hautes études agronomiques méditerranéennes
institution IGM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-igm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IGM España
language English
topic Fat fluidity
Fatty acid composition
Marine lipid
Ruminant nutrition
Sheep
Fat fluidity
Fatty acid composition
Marine lipid
Ruminant nutrition
Sheep
spellingShingle Fat fluidity
Fatty acid composition
Marine lipid
Ruminant nutrition
Sheep
Fat fluidity
Fatty acid composition
Marine lipid
Ruminant nutrition
Sheep
Rodríguez-López, Laura
Toral, Pablo G.
Hervás, Gonzalo
Frutos, Pilar
Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
description 1 página.-- Trabajo presentado al: Joint Seminar of the FAO-CIHEAM Network on Sheep and Goats. Joint Seminar of the Sub-Networks on Production Systems and on Nutrition: Innovation for Sustainability in Sheep and Goats, p. 78 (S2N-43). 3-5 de octubre de 2017. Vitoria-Gazteiz (España).
format póster de congreso
topic_facet Fat fluidity
Fatty acid composition
Marine lipid
Ruminant nutrition
Sheep
author Rodríguez-López, Laura
Toral, Pablo G.
Hervás, Gonzalo
Frutos, Pilar
author_facet Rodríguez-López, Laura
Toral, Pablo G.
Hervás, Gonzalo
Frutos, Pilar
author_sort Rodríguez-López, Laura
title Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
title_short Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
title_full Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
title_fullStr Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
title_full_unstemmed Diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
title_sort diet supplementation with a high dose of stearic acid to alleviate fish oil-induced milk fat depression in lactating ewes
publisher Food and Agriculture Organisation of the United Nations
publishDate 2017
url http://hdl.handle.net/10261/156203
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