Changes in milk and plasma fatty acid profile in response to fish and soybean oil supplementation in dairy sheep

dc.contributor.author	Tsiplakou, E	en
dc.contributor.author	Zervas, G	en
dc.date.accessioned	2014-06-06T06:52:22Z
dc.date.available	2014-06-06T06:52:22Z
dc.date.issued	2013	en
dc.identifier.issn	00220299	en
dc.identifier.uri	http://dx.doi.org/10.1017/S0022029913000137	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/5978
dc.subject	fatty acids	en
dc.subject	Fish oil	en
dc.subject	milk	en
dc.subject	sheep	en
dc.subject	soybean oil	en
dc.subject.other	fatty acid	en
dc.subject.other	fish oil	en
dc.subject.other	soybean oil	en
dc.subject.other	animal	en
dc.subject.other	animal disease	en
dc.subject.other	animal food	en
dc.subject.other	article	en
dc.subject.other	blood	en
dc.subject.other	chemistry	en
dc.subject.other	dairying	en
dc.subject.other	diet	en
dc.subject.other	diet supplementation	en
dc.subject.other	drug effect	en
dc.subject.other	female	en
dc.subject.other	lactation	en
dc.subject.other	metabolism	en
dc.subject.other	milk	en
dc.subject.other	nutritional value	en
dc.subject.other	sheep	en
dc.subject.other	Animal Feed	en
dc.subject.other	Animals	en
dc.subject.other	Dairying	en
dc.subject.other	Diet	en
dc.subject.other	Dietary Supplements	en
dc.subject.other	Fatty Acids	en
dc.subject.other	Female	en
dc.subject.other	Fish Oils	en
dc.subject.other	Lactation	en
dc.subject.other	Milk	en
dc.subject.other	Nutritive Value	en
dc.subject.other	Sheep	en
dc.subject.other	Soybean Oil	en
dc.subject.other	Glycine max	en
dc.subject.other	Ovis aries	en
dc.title	Changes in milk and plasma fatty acid profile in response to fish and soybean oil supplementation in dairy sheep	en
heal.type	journalArticle	en
heal.identifier.primary	10.1017/S0022029913000137	en
heal.publicationDate	2013	en
heal.abstract	An effective strategy for enhancing the bioactive fatty acids (FA) in sheep milk could be dietary supplementation with a moderate level of a combination of soybean oil with fish oil (SFO) without negative effects on milk yield and its chemical composition. Thus, the objective of this study was to determine the effects of a moderate forage diet supplementation with SFO on milk chemical composition and FA profile, as well as on plasma FA. Twelve dairy sheep were assigned to two homogenous sub-groups. Treatments involved a control diet without added oil, and a diet supplemented with 23·6Â g soybean oil and 4·7Â g fish oil per kg dry matter (DM) of the total ration. The results showed that SFO diet had no effect on milk yield and chemical composition. In blood plasma the concentrations of trans-11 C18:2 (VA), C18:2n-6, C20:5n-3 (EPA) and C22:6n-3 (DHA) were significantly higher while those of C14:0, C16:0 and C18:0 were lower in sheep fed with SFO diet compared with control. The SFO supplementation of sheep diet increased the concentrations of VA, cis-9, trans-11 C18:2 CLA, trans-10, cis-12, C18:2 CLA, EPA, DHA, monounsaturated FA (MUFA), polyusaturated fatty acids (PUFA) and n-3 FA and decreased those of short chain FA (SCFA), medium chain FA (MCFA), the saturated/unsaturated ratio and the atherogenicity index value in milk compared with the control. In conclussion, the SFO supplementation at the above levels in a sheep diet, with moderate forage to concentrate ratio, improved the milk FA profile from human health standpoint without negative effects on its chemical composition. Copyright © Proprietors of Journal of Dairy Research 2013.	en
heal.journalName	Journal of Dairy Research	en
dc.identifier.issue	2	en
dc.identifier.volume	80	en
dc.identifier.doi	10.1017/S0022029913000137	en
dc.identifier.spage	205	en
dc.identifier.epage	213	en