Open AccessEffects of dietary lipid source on fatty acid composition, expression of genes involved in lipid metabolism and antioxidant status of grass carp ( Ctenopharyngodon idellus )
Author(s) -
Yu H.,
Zhou J.,
Lin Y.,
Ji H.,
Li Y.,
Wang J.
Publication year - 2018
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/anu.12682
Subject(s) - grass carp , cd36 , biology , food science , carnitine , linseed oil , antioxidant , lipid metabolism , fatty acid , fish oil , biochemistry , fish <actinopterygii> , fishery , receptor
Abstract This study determined the effect of different lipid sources on growth, feed use, lipid metabolism and antioxidant status of grass carp ( Ctenopharyngodon idellus ). Juvenile fish (56.9 ± 4.7 g) were divided into four triplicate groups and fed diets containing 30 g/Kg of fish oil ( FO ), olive oil ( OO ), peanut oil ( PO ) and linseed oil ( LO ), respectively, for 60 days. Weight gain and feed conversion ratio were not significantly different between the dietary groups, but we observed changes in the fatty acid composition of muscle and intraperitoneal fat reflecting the fatty acid profile of the dietary lipid source. In the hepatopancreas, the highest mRNA level of fatty acid translocase CD 36 ( FAT/CD36 ) and carnitine palmitoyl transferase ( CPT‐1A ) was both observed in the FO group. In muscle, the expression of FAT/CD36 and CPT‐1A in the LO group was significantly higher than that in other groups, except for CPT ‐1A in the PO group. In addition, the lowest and highest content of malondialdehyde in serum was observed in OO and FO groups, respectively. In summary, dietary lipid source altered the fatty acid composition, potential uptake ( FAT/CD36 ) and oxidation ( CPT‐1A ) of fatty acids, and antioxidant status of grass carp, which should be considered when selecting a lipid source.