Open AccessEffects of dietary phospholipid and cholesterol levels on growth and fatty acid composition of juvenile swimming crab, Portunus trituberculatus
Author(s) -
Han T.,
Wang J.T.,
Li X.Y.,
Yang Y.X.,
Yang M.,
Tian H.L.,
Zheng P.Q.,
Wang C.L.
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.12544
Subject(s) - portunus trituberculatus , biology , juvenile , moulting , phospholipid , zoology , cholesterol , composition (language) , fatty acid , food science , biochemistry , fishery , botany , ecology , linguistics , philosophy , membrane , larva
Abstract The objective of this study was to evaluate the effects of different phospholipids ( PL ) and cholesterol ( CH ) levels on the growth, moulting and fatty acid composition of juvenile swimming crab , Portunus trituberculatus . Six diets were designed to contain three PL levels (0, 10 and 20 g/kg) and two CH levels (2 and 8 g/kg). Juvenile swimming crabs (3.48 ± 0.02 g/crab) were reared for 8 weeks. The weight gain ( WG ) was significantly ( p < .05) increased by supplementation of 8 g CH /kg of diet. However, no significant interaction between dietary PL and CH levels was found on the growth performance ( p > .05). The moulting frequency ( MF ), protein efficiency ratio ( PER ) and feed efficiency ratio ( FCR ) were not significantly ( p > .05 ) affected by the dietary treatments. The serum total cholesterol ( TCH ) significantly ( p > .05 ) increased with increasing dietary PL level. The C20:4n‐6 and C20:5n‐3 content of the whole body of crabs increased with the addition of PL to the diet containing 2 g/kg CH of diet. An interaction was observed between PL and CH on certain saturated and unsaturated fatty acid concentrations of body.