Understanding the mechanisms that regulate the formation of subcutaneous and intramuscular fat (IF) Is important in improving meat quality. Formation of IF is a process, which occurs in the later stages of development, perhaps due to age-related changes in expression of lipogenic enzymes. Acetyl CoA carboxylase (ACC) and fatty acid synthase (FAS) are the key enzymes in the process of de novo synthesis of fatty acids. Delta-9-desaturase (d-9-d) is another key lipogenic enzyme, which catalyses conversion of saturated fatty acids (synthesised de novo as well as dietary) to monounsaturated. The objective of the present research was to investigate the levels of ACC, FAS and d-9-d in the subcutaneous fat and muscles of pigs of different ages.