Open AccessPhospholipids in formulated start‐feeds – Effect on turbot ( Scophthalmus maximus L.) larval growth and mitochondrial alteration in enterocytes
Author(s) -
MacQueen Leifson R.,
Homme J.M.,
Jøstensen J.P.,
Lie Ø.,
Myklebust R.,
Strøm T.
Publication year - 2003
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 - 10.1046/j.1365-2095.2003.00228.x
Subject(s) - turbot , scophthalmus , biology , larva , phospholipid , enterocyte , zoology , biochemistry , food science , botany , fishery , fish <actinopterygii> , small intestine , membrane
Turbot Scophthalmus maximus , larvae were start‐fed with formulated feeds containing marine phospholipids (MP) or soya phospholipids (SP). The experiment was performed with six experimental groups, four groups were given formulated feeds, one group was given live feed and one group was starved. Phospholipid (PL) contents of the formulated feeds were respectively 5% MP, 15% MP, 5% SP and 15% SP. Larvae were offered feed from day 3 post‐hatch. There was no significant size difference on day 5 between the group fed 15% MP and the group given rotifers. Electron microscopical examination of enterocytes was performed on larval intestine on day 5. Larvae fed 5% and 15% MP and larvae fed rotifers had normal looking enterocytes with numerous normal looking mitochondria. In the enterocytes of larvae fed 5% SP and 15% SP the mitochondria appeared swollen with a translucent matrix and fragmented cristae. Thus, MP and not SP seemed suitable as a lipid and PL source for start‐feeding turbot larvae.