Eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids are long-chain n-3 polyunsaturated fatty acids that are essential for human health. They play an important role in prevention of heart disease and some cancers. The richest source of EPA and DHA are fish and marine products, but in Poland the consumption of fish is slightly declining. Milk enriched with EPA and DHA could be an alternative and effective means of increasing the consumption of these fatty acids. EPA and DHA could be transferred to milk from a cow’s diet or synthesized from their precursor, α-linolenic acid (LNA). Increasing the dietary supply of EPA and DHA, or LNA, has a limited effect, however, due to the extensive biohydrogenation of these fatty acids in the rumen and low uptake by the mammary gland. Feeding protected sources of n-3 polyunsaturated fatty acids does increase the EPA and DHA content of total fatty acids, although absolute levels are relatively low, and results in an increased concentration of conjugated linoleic acid in milk. Issues that need to be researched include the development of a suitable oil supplement and a reliable means of protecting it from rumen biohydrogenation.
CITATIONS(8):
1.
The effect of dietary supplementation with Aurantiochytrium limacinum
on lactating dairy cows in terms of animal health, productivity and milk composition C. A. Moran, M. Morlacchini, J. D. Keegan, G. Fusconi Journal of Animal Physiology and Animal Nutrition
Effect of supplementation of cows diet with linseed and fish oil and different variants ofβ-lactoglobulin on fatty acid composition and antioxidant capacity of milk Kamila Puppel, Beata Kuczyńska, Teresa Nałęcz-Tarwacka, Marcin Gołębiewski, Tomasz Sakowski, Aleksandra Kapusta, Arkadiusz Budziński, Marek Balcerak Journal of the Science of Food and Agriculture
Supplementation effects of seleno-compounds, carnosic acid, and fish oil onconcentrations of fatty acids, tocopherols, cholesterol, and amino acids in the livers of lambs Agnieszka Justyna ROZBICKA-WIECZOREK, Edyta WIESYK, Katarzyna Agnieszka KRAJEWSKA-BIENIAS, Krzysztof WERESZKA, Marian CZAUDERNA TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES
A gas chromatographic study of the conjugated linoleic acid and other fatty acid contents of raw milk samples from Galicia (NW Spain) Araceli González-García, Beatriz Paz-Rodríguez, Manuel Aboal-Somoza, María Raquel Domínguez-González, Pilar Bermejo-Barrera International Journal of Dairy Technology
Enhancement of dairy sheep cheese eating quality with increased n-3 long-chain polyunsaturated fatty acids Quang Vu Nguyen, Hung Van Le, Don Viet Nguyen, Bunmi S. Malau-Aduli, Peter D. Nichols, Aduli E.O. Malau-Aduli Journal of Dairy Science
Dietary supplementation of dairy cows with a docosahexaenoic acid-rich thraustochytrid, Aurantiochytrium limacinum: effects on milk quality, fatty acid composition and cheese making properties C. Moran, M. Morlacchini, J. Keegan, H. Warren, G. Fusconi Journal of Animal and Feed Sciences
Effects of Fat Supplementation in Dairy Goats on Lipid Metabolism and Health Status Giovanni Savoini, Zorini Omodei, Greta Farina, Alessandro Agazzi, Donata Cattaneo, Guido Invernizzi Animals
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