Repositori URV

Identifier: TDX:448

Handle: https://hdl.handle.net/20.500.11797/TDX448

Authors:
Duran Montgé, Pere

Abstract:
The objectives of this thesis were to study the effect of dietary fat composition on whole-pig fat and fatty acid composition related pig lipid metabolism.Seventy gilts were divided in 10 animals per treatment. Pigs were fed one of seven treatments: a diet with a very low level of fat and six fat supplemented diets (10%). The supplemental fats were tallow, high-oleic sunflower oil, sunflower oil, linseed oil, blend (tallow, sunflower oil, linseed oil) and fish oil blend (FO) (fish oil, linseed oil). Whole-body fat content of high-oleic sunflower oil (26.7%) and sunflower oil (26.7%) fed animals was higher than tallow (22.9%) fed animals. This is in parallel with the observation that fat tissue dissection and fat depth were numerically lower in animals fed tallow compared to other diets. Gene expression of lipogenic enzymes also showed reduced expression and reduced triiodothyronine contents in blood in pigs fed tallow.