Effect of feeding strategies on the contents of functional fatty acids in milk fat | Einfluss der Fütterrung auf den Gehalt an funktionellen Fettsäuren im Milchfett
2010
Hoffmann, A., Stuttgart. (Germany). Univ. Hohenheim. Inst. für Tierernährung. | Steigass, H. | Trieglaff, D. | Bürkert, M. | Rodehutscord, M.
In two investigations the fatty acid (FA) pattern of milk fat was positively modified relating to human nutrition by modifying the dairy cow diets ((1) high proportion of grassland; (2) supplementation of linseed). The contents of unsaturated and polyunsaturated FA were increased while the contents of saturated FA were decreased. Contents of Omega 3 (n3)-FA and conjugated linoleic acid (CLA) were also increased. The Omega 6 (n6) to n3 FA ratio decreased, similarly to the ratio of C16:0 to C18:0. Both investigations showed that an increase of the desired FA is possible by changes in the contents of grassland products in the diet, without supplementation of special feedstuffs. A supplementation of full fat partly protected linseed raised the 'valuable' FA contents (despite of already increased contents of n3 as consequence of high proportions of grassland in dairy cow diets) in an additive manner, independent from the initial values.
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