American Journal of Agricultural and Biological Sciences

Effect of Fat-Mineral Preparation From Fish Oil on Fatty Acid Content on Cow Milk

Witold Janeczek, Marek Szoltysik, Robert Kupczynski, Józefa Chrzanowska, Stefania Kinal, Mariusz Korczynski and Anna Bartkowiak

DOI : 10.3844/ajabssp.2007.276.283

American Journal of Agricultural and Biological Sciences

Volume 2, Issue 4

Pages 276-283

Abstract

8-week-lasting investigation aimed at the assessment of the effect of fish oil application in the form of fat-mineral preparation (F-M) on fatty acid content in milk fat. The subject of this investigation were highly efficient dairy cows (primiparous and multiparous). The cows were administered F-M containing fish oil (1% in dry mass of ration) which resulted in decreased level of shortchain fatty acids in milk fat and increased level of longchain fatty acids. There was recorded significant increase in isomer cis-9,trans-11 CLA content, as well as the one of polyunsaturated fatty acids of n-3 - EPA and DHA group. The number of n-3 group acid did considerably increase. The fatty acids n-6/n-3 ratio showed significant decrease in both experimental groups.

Copyright

© 2007 Witold Janeczek, Marek Szoltysik, Robert Kupczynski, Józefa Chrzanowska, Stefania Kinal, Mariusz Korczynski and Anna Bartkowiak. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.