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Effect of season on fatty acid and terpene profiles of milk from Greek sheep raised under a semi-extensive production system

Published online by Cambridge University Press:  07 September 2016

Loukas Papaloukas
Affiliation:
Laboratory of Animal Husbandry, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, Greece
Efthymios Sinapis*
Affiliation:
Laboratory of Animal Husbandry, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, Greece
George Arsenos
Affiliation:
Laboratory of Animal Husbandry, Department of Veterinary Medicine, Aristotle University of Thessaloniki, Greece
George Kyriakou
Affiliation:
Department of Chemical Engineering, Aristotle University of Thessaloniki, Greece
Zoitsa Basdagianni
Affiliation:
Laboratory of Animal Husbandry, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, Greece
*
*For correspondence; e-mail: sinapis@agro.auth.gr

Abstract

The objective of the study was to investigate the effect of season on the fatty acid and terpene composition in ewe milk. A total of 760 samples of bulk sheep milk were collected during winter (147 samples), spring (314 samples) and summer (299 samples) of 2011, from 90 commercial farms of dairy sheep from the prefecture of Grevena, Greece. Regarding fatty acid composition, summer samples had higher concentrations of α-linolenic acid, cis-9, trans 11- CLA, trans-11, C18 : 1 and PUFAs but lower content of saturated fatty acids particularly C12 : 0, C14 : 0 and C16 : 0. The winter milk had the lowest content of terpenes, in particular sesquiterpenes, compared to spring and summer milk. The terpene profile of milk samples, in all three seasons, revealed the presence of monoterpenes: a-pinene, b-pinene and D-limonene, especially with a higher frequency of appearance in summer. The most common and abundant sesquiterpenes found in milk samples were β-caryophyllene and α-caryophyllene with a higher frequency of appearance in summer. In conclusion, the available pastures in semi-extensive farming systems can contribute to the production of high quality milk.

Information

Type
Research Article
Copyright
Copyright © Proprietors of Journal of Dairy Research 2016 

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