A comprehensive analysis of the effects of fish diets based on vegetable oils and or supplemented with CLA on the expression of the PPAR isotypes and potential PPAR-target genes. This result demonstrates that the lipid composition of the fish diets can have significant effects on the expression of the PPAR genes and therefore to the global lipid and fatty acid metabolism in fish tissues.

By establishing measurable parameters at both the molecular and biochemical levels, it provides the necessary background for the future evaluation of novel dietary formulations in fish nutrition and "nutreomics".