Auswirkung von Kuhrasse und Melksaison auf die Fettsäurekomposition in Juchowo farm

At the biodynamic farm Juchowo, 7 pairs of dairy cows from 2 breeds (Holstein (HF) and Brown Swiss (BS)) were milk sampled in summer and in winter. Cows are grazed in summer and fed hay in winter. Differences in the milk fatty acid profile were evaluated for effects of month (fodder), breed and individual cows. The most important way to improve the FA quality is through grazing of fresh grass. Therefor milk from grass based systems should be preferred. Overall breed effects were small, but there are still possibilities present to select individual cows to get an improved FA quality profile in terms of CLA, n-3 FA and delta-9-desaturase activity.