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Effects of seasonal changes in feeding management under part-time grazing on terpene concentrations of ewes' milk

Published online by Cambridge University Press:  08 December 2010

Eunate Abilleira ,
Mailo Virto ,
Ana Isabel Nájera ,
Marta Albisu ,
Francisco José Pérez-Elortondo ,
Juan Carlos Ruiz de Gordoa ,
Mertxe de Renobales  and
Luis Javier R. Barron
Eunate Abilleira
Affiliation:
Technología de Alimentos, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Mailo Virto
Affiliation:
Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Ana Isabel Nájera
Affiliation:
Technología de Alimentos, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Marta Albisu
Affiliation:
Nutrición y Bromatología, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Francisco José Pérez-Elortondo
Affiliation:
Nutrición y Bromatología, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Juan Carlos Ruiz de Gordoa
Affiliation:
Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Mertxe de Renobales*
Affiliation:
Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
Luis Javier R. Barron*
Affiliation:
Technología de Alimentos, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
*
*For correspondence: luisjavier.rbarron@ehu.es; mertxe.derenobales@ehu.es
*For correspondence: luisjavier.rbarron@ehu.es; mertxe.derenobales@ehu.es
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Abstract

Terpene composition of ewes’ raw milk from nine commercial flocks was analysed from February to July. Ewes’ diet consisted of concentrate and conserved forage in winter (indoor feeding) and part-time grazing from spring (transition and outdoor feeding). Regardless of the feeding, limonene and β-phellandrene were the most abundant monoterpenes and β-caryophyllene showed the highest concentrations among sesquiterpenes. Terpene content increased in the milks of commercial flocks when animals were reared under grazing management. Monoterpenes were detected in the milks of all the commercial flocks throughout the season, whereas sesquiterpenes were only detected in the milks from flocks grazing on non-cultivated community-owned grasslands in which a higher biodiversity of plant species grew. These preliminary results indicated that β-caryophyllene could be a potential pasture-diet marker in the case of milks from animals grazing a higher biodiversity of plant species but in-depth studies including information on terpene composition of plants ingested by the animals are necessary to evaluate the suitability of β-caryophyllene or another terpenoid compound as pasture biomarker.

Keywords

Terpenesewes’ milkcommercial flockspart-time grazinggrassland biodiversity
Type
Research Article
Information
Journal of Dairy Research , Volume 78 , Issue 2 , May 2011 , pp. 129 - 135
Copyright
Copyright © Proprietors of Journal of Dairy Research 2010

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