Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Seasonal variation in the fatty acid composition of milk supplied to dairies in the mountain regions of Switzerland

Seasonal variation in the fatty acid composition of milk supplied to dairies in the mountain... The influence of typical feeds from five mountain regions of Switzerland (altitude of grass-based feed (GBF) during the summer and winter seasons: 1247 (± 465) m and 1136 (± 310) m, respectively) on the fatty acid (FA) composition of bovine milk fat was studied over one year (from May 2004 to April 2005). Compared with winter, summer milk had a significantly lower concentration of saturated FA (SFA) (−8.6%) and significantly higher contents of monounsaturated FA (MUFA) (+19.9%), polyunsaturated FA (PUFA) (+21.7%), conjugated linoleic acid (CLA) (+70.1%), and trans FA other than CLA (+56.7%). Summer and winter milk from mountains did not significantly differ with respect to the contents of branched, n-3 and n-6 FA. However, the content of the main n-3 FA (α-linolenic acid) was significantly higher in summer than in winter milk and its content was positively correlated with increasing percentages of GBF and altitude. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Dairy Science & Technology Springer Journals

Seasonal variation in the fatty acid composition of milk supplied to dairies in the mountain regions of Switzerland

Loading next page...
 
/lp/springer-journals/seasonal-variation-in-the-fatty-acid-composition-of-milk-supplied-to-a7LcNlHsVJ
Publisher
Springer Journals
Copyright
Copyright © 2008 by Springer S+B Media B.V.
Subject
Chemistry; Food Science; Agriculture; Microbiology
ISSN
1958-5586
eISSN
1958-5594
DOI
10.1051/dst:2008029
Publisher site
See Article on Publisher Site

Abstract

The influence of typical feeds from five mountain regions of Switzerland (altitude of grass-based feed (GBF) during the summer and winter seasons: 1247 (± 465) m and 1136 (± 310) m, respectively) on the fatty acid (FA) composition of bovine milk fat was studied over one year (from May 2004 to April 2005). Compared with winter, summer milk had a significantly lower concentration of saturated FA (SFA) (−8.6%) and significantly higher contents of monounsaturated FA (MUFA) (+19.9%), polyunsaturated FA (PUFA) (+21.7%), conjugated linoleic acid (CLA) (+70.1%), and trans FA other than CLA (+56.7%). Summer and winter milk from mountains did not significantly differ with respect to the contents of branched, n-3 and n-6 FA. However, the content of the main n-3 FA (α-linolenic acid) was significantly higher in summer than in winter milk and its content was positively correlated with increasing percentages of GBF and altitude.

Journal

Dairy Science & TechnologySpringer Journals

Published: May 21, 2011

References