The contents of fatty acids (FA) in fish oil and linseed oil as well as in diets (% of total FA) are presented in Table 2. The analysis showed that supplemented oils differed in the fatty acid profile. Fish oil contained 37.12% of SFA, 21.03% of MUFA, 16.32% of n-6 PUFA and 33.60% of n-3 PUFA, with EPA + DHA taking up 33.23% of total FA. Linseed oil contained 8.51% of SFA, 18% of MUFA, 16.32% of n-6 PUFA and 57.17% of n-3 PUFA, out of which α-LNA took up 56.97% of total FA. Linseed oil did not contain EPA and DHA.