THE USE OF CORN GLUTEN MEAL AS A PARTIAL REPLACEMENT FOR FISH MEAL IN DIETS OF SEA BASS (DICENTRARCHUS LABRAX) FRY

THE USE OF CORN GLUTEN MEAL AS A PARTIAL
REPLACEMENT FOR FISH MEAL IN DIETS OF SEA BASS
(DICENTRARCHUS LABRAX) FRY
BY
EL-EBIARY E. H. *; M. A. ZAKI AND H.A MABROOK
*iVationalInstitute ofOceanography and Fisheries.. Alexandria. Eg;pt.
Key words: Sea bass, fish meal, corn gluten meal, growth performance,
feed utilization.
ABSTRACT
This experiment was conducted to evaluate com gluten meal
(CGjv!) as an altemati’.’e protein source for fish meal in the diet of Sea
bass Dicentrarchus labrax fi)!. -Fish with an average initial body
weight of 0.58=0.002g were stocked into ten glass aquaria (JOO X 30
.)(-JO cm). Each tank contains 100 liter of seawater and was stocked
with ten fish. Five isonitrogenous diets (55% cn/de protein)
containing d~fferent levels of CG1V!. were fed three times dai~v. 6 days
a week for 8-J days. Growth. feed and nutrient utilization of Sea bass
fiJ’ Dicentrarchus labra”l: fed the diets replacing -JO % of RvI by
substitution CGM protein were not statistically dtfJerent from those of
fish fed the control diet (containing 75% fish meal as a sole protein
source). All parameters of grov.,th and feed utilization for fish fed the
diet replacing 60% of .fish meal protein by CGJv! protein were
significantly lower than that fed the control diet (P~- 0.05).
Supplements of crystalline amino acids to the CGJ’v! diet improved the
nutritive value of the diett Since substitution up to -10% did not
adversely affect whole body composition of the cultured fish. Survival
rates of.fish ranged fioom 90 to 100%. it is suggested that up to -10% of
fish meal protein can be replaced with CGAl in the diet of Sea bass
fi}’·