Abstract
An increasingly larger proportion of the oils used in diets for farmed fish are plant derived and rapeseed oil is most commonly used. Despite high dietary lipid levels and a marked change in lipid composition, the transport and metabolic fate of absorbed fatty acids is not fully understood in teleost fish. The main purpose of this study was to trace the postabsorptive metabolic fate of 2 fatty acids of different chain length: oleic acid [3H-18:1(n-9)], constituting 70% of fatty acids in rapeseed oil, and the medium-chain decanoic acid [14C-10:0], which does not require carrier molecules for membrane passage. The fatty acids and their metabolites were traced in portal and peripheral blood, liver, heart, skeletal muscle, and visceral adipose tissue at time intervals from 3 to 48 h after feeding. The portal vein was the primary transport route for both 10:0 and 18:1(n-9) from the intestine to the liver the first 6 h after feed intake. From 12 to 48 h, the peripheral route became increasingly more important. The study also indicates a possible direct transport route of fatty acids from the intestine to the surrounding viscera. Our data demonstrate that whereas 18:1(n-9) is primarily deposited as TG in skeletal muscle and visceral adipose tissue, 10:0 is used by the heart and skeletal muscle as a source for rapid energy production.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
