EFFECT OF DIFFERENTARTIFICIAL DIETS ON THE MAJOR FLESH BIOCHEll1ICAL CONTENTS OF FISH.RABDOSARGUS HAFFARA REARED IN TANKS

EFFECT OF DIFFERENTARTIFICIAL DIETS ON THE MAJOR

FLESH BIOCHEll1ICAL CONTENTS OF FISH.RABDOSARGUS

HAFFARA REARED IN TANKS

BY
MOHAMED ALAA A.. 01\’IRAN*; MESSAD.A 1\’1. EL­

GHAR-\BAWY AND l\’L~GDY MOSTAFA O. EL-HALFAWY

•Zoology Department, Faculty ofScience. Suez Canal University, Ismailia,
Egypt.
e-mail: [email protected]
Keywords: Artificial food, Biochemical parameters, Rltabdosargus Haffara
ABSTRACT
Rhabdosarglls haffara is one of the most important commercial
fish from family Sparidae in the Suez Gulf This fish has been
cultured in Suez fish farms some years ago, but fish falTIler till know
not used artificial diets in their falTIls. The main aim ofthis study is to
evaluate the effect of using different artificial diets varying in their
protein sources, such as animal source (fish & blood) and plant source
(soybean), on the flesh major biochemical contents of fish
Rhabdosarglls haffara reared in tanks.
Changes in flesh protein content, lipid, DNA, R!”l”A and amino
acids components in muscles ofR. haffara fish fed on different meals
for 7 months \vere measured. Also, Isoelectricfocusing (IEF)
techniques were done to identitY the different muscle protein bands of
reared fish.
The data showed that fish fed on “fish meal gave better biochemical
parameters than fish fed on other protein sources, even the control
ones. Flesh of R. haffara, fed on this diet has the highest protein
content, DNA and RNA values. Elevation of protein levels correlated