Genetically improved farmed Nile tilapia and red hybrid tilapia showed differences in fatty acid metabolism when fed diets with added fish oil or a vegetable oil blend

A 2 × 2 factorial 14-week feeding trial was conducted to evaluate the fatty acid metabolism in two different tilapia genotypes [Nile tilapia (Oreochromis niloticus, GIFT strain) and red hybrid tilapia (Oreochromis sp.)] fed a fish oil (FO)- or blended vegetable oil (BVO)-based semipurified diet. The BVO was formulated using olive oil (15%), sunflower oil (15%), linseed oil (30%) and refined, bleached, deodorized palm olein (40%) to mimic the...