Parts of this paper were presented at the First International Conference on Organic Food Quality and Health Research, Prague, May 2011.
Fatty acid, tocopherol and carotenoid content in herbage and milk affected by sward composition and season of grazing†
Article first published online: 15 FEB 2012
Copyright © 2012 Society of Chemical Industry
Journal of the Science of Food and Agriculture
Special Issue: First International Conference on Organic Food Quality and Health Research
Volume 92, Issue 14, pages 2891–2898, November 2012
How to Cite
Larsen, M. K., Fretté, X. C., Kristensen, T., Eriksen, J., Søegaard, K. and Nielsen, J. H. (2012), Fatty acid, tocopherol and carotenoid content in herbage and milk affected by sward composition and season of grazing. J. Sci. Food Agric., 92: 2891–2898. doi: 10.1002/jsfa.5620
- Issue published online: 17 OCT 2012
- Article first published online: 15 FEB 2012
- Manuscript Accepted: 9 JAN 2012
- Manuscript Revised: 19 DEC 2011
- Manuscript Received: 5 JUL 2011
- fatty acids;
BACKGROUND: The aim of the present work was to study to what extent grazing large amounts of white clover (WCL), red clover (RCL), lucerne (LUC) or chicory (CHI) was suitable for production of bovine milk with a high milk fat content of tocopherols, carotenoids, α-linolenic acid and conjugated linoleic acid.
RESULTS: WCL, RCL, LUC and CHI swards were established to investigate the influence of herbage composition on the milk quality of grazing dairy cows at three periods. Average milk fat composition showed high concentrations of linolenic acid (12 mg g−1), conjugated linoleic acid (13 mg g−1), carotenoids (6 µg g−1) and α-tocopherol (21 µg g−1 milk fat). There were minor differences between herbage types and periods, but multivariate analysis of these data showed no clear grouping. Chemical composition of herbage varied with species as well as period, but it was not possible to relate milk and feed contents of specific fatty acids, carotenoids or tocopherols.
CONCLUSION: All four herbages tested were suitable for production of milk with a high content of beneficial compounds. Thus any of these herbages could be used in production of such differentiated milk based on a large proportion of grazing in the ration. Copyright © 2012 Society of Chemical Industry