Challenges in enriching milk fat with polyunsaturated fatty acids

TR Number
Date
2015-06-12
Journal Title
Journal ISSN
Volume Title
Publisher
Biomed Central
Abstract

Milk fatty acid composition is determined by several factors including diet. The milk fatty acid profile of dairy cows is low in polyunsaturated fatty acids, especially those of the n-3 series. Efforts to change and influence fatty acid profile with longer chain polyunsaturated fatty acids have proven challenging. Several barriers prevent easy transfer of dietary polyunsaturated fatty acids to milk fat including rumen biohydrogenation and fatty acid esterification. The potential for cellular uptake and differences in fatty acid incorporation into milk fat might also have an effect, though this has received less research effort. Given physiological impediments to enriching milk fat with polyunsaturated fatty acids, manipulating the genome of the cow might provide a greater increase than diet alone, but this too may be challenged by the physiology of the cow.

Description
Keywords
Agriculture, Dairy & Animal Science, Agriculture, Dairy cow, Milk fat, Polyunsaturated fatty acids, CONJUGATED LINOLEIC-ACID, LACTATING DAIRY-COWS, LONG-CHAIN, FISH-OIL, DOCOSAHEXAENOIC ACID, GROWTH INHIBITOR, BINDING PROTEIN, RUMEN BACTERIA, MAMMARY-GLAND, DUODENAL FLOW
Citation
Journal of Animal Science and Biotechnology. 2015 Jun 12;6(1):26