The effect of different fat sources (with different fatty acid content) in pig diet on average daily gain (ADG), lean meat percentage, pH value, intramuscular fat (IMF) content and drip loss was investigated in 40 gilts. Animals were divided in four groups fed with control (C), linseed (L), sunflower (S) or conjugated linoleic acid (CLA) diet. The highest ADG was found in S and L group but there was not found statistically significant (P > 0.05) differences among groups. Lean meat content in carcass body and pH values were measured after slaughter. The highest percentage of lean meat was found in CLA group, the lowest in L group (P < 0.05). The significant difference was also found for pH1 value (P < 0.01), pH24 value was not significantly affected. Intramuscular fat content and drip loss were analyzed in samples of M.longissimus dorsi et thoracis. The highest content of IMF was measured in meat from L group. Drip loss was also found significant among groups (P < 0.05).