Effects of dietary Chlorella
ellipsoidea supplementation on growth, blood characteristics, and whole-body
composition in juvenile Japanese flounder Paralichthys olivaceus
K.W. Kim, S.C.C. Bai, SCC, J.W. Koo, X.J. Wang, S.K.
Kim-2002
Journal of the World Aquaculture Society, 33(4):
425-431 (from ISI Current
Contents)
Abstract:
The study was conducted to investigate the effects of dietary Chlorella
powder (C) supplementation on growth performance, blood characteristics, and
whole-body composition in juvenile Japanese flounder Paralichthys olivaceus.
Four experimental diets were supplemented with C at 0, 1, 2 and 4% (C-0,
C-1, C-2, and C-4) on a dry-weight basis. Three replicate groups of fish
averaging 1.13 +/- 0.02 g (Mean +/- SD) were randomly distributed in each
aquarium and fed one of four experimental diets for 12 wk. After 12 wk of
the feeding trial, fish fed C-2 diet had higher weight gain (WG), feed
efficiency (FE), and protein efficiency ratio (PER) than did fish fed C-0
and C(1)diets (P < 0.05); however, there was no significant difference
among fish fed C-1 and C-4 diets, and among fish fed C-2 and C-4 diets (P
> 0.05). Fish fed C-2 and C-4 diets had a lower serum cholesterol level
than did fish fed C-0 and C-1 diets (P < 0.05). Fish fed C-2 and C-4
diets had a lower body fat than did fish fed C-0 (P < 0.05). These
results indicate that dietary supplementation of 2% Chlorella powder in the
commercial diets could improve growth, feed utilization, serum cholesterol
level, and whole-body fat contents in juvenile Japanese flounder.
(Pukyong
Natl. Univ., Feeds & Foods Nutr. Res. Ctr., Dept. Aquaculture, Daeyeon 3
Dong, Nam Gu Busan 608737, South Korea)