The effect of false flax (Camelina sativa) cake dietary supplementation in dairy goats on fatty acid profile of kefir

Camelina sativa cake (CS), a rich source of unsaturated fatty acids, in the case of ruminants may improve the energy value of a diet and also increase the unsaturated fatty acid content in milk. Effects of basal diet (control) and basal diet plus 12 g 100 g−1 of CS in concentrate dry matter on fatty acid composition of goat's milk and kefir made from this milk were examined with particular emphasis on the contents of monoenes and conjugated isomers of linoleic acid. A total of 66 goats of the Polish White Improved breed were divided into two groups – the control and receiving CS. The diets were administered to animals for 30 days. Elevated concentrations of total monounsaturated fatty acids, the effect of an increased levels of monounsaturated fatty acids in the trans configuration as well as an increased content of total polyunsaturated fatty acids resulted from CS supplementation. Total saturated fatty acid concentration was decreased. Milk from CS-supplemented goats and kefir made from this milk were characterized by increased levels of beneficial nutritional factors, including mono- and polyunsaturated fatty acids.