EFFECTS OF FERMENTED FISH MEAL ON HAEMATOLOGICAL CHARACTERISTICS AND FATTY ACID COMPOSITIONS IN LIVER OF RED SEA BREAM

Abstract

The fatty acid compositions of liver, proximate compositions of both liver and muscle, condition
factor, % of organ weight, haematological characteristics, chemical components and enzyme activities in
blood plasma of Red sea bream fed on fermented scrap fish meal (FFM) or defatted meals (DF-1&DF-2)
diets for 8 weeks were compared with those fed with nonfermented scrap fish meal (NFM) or white fish
meal (WFM).
The W3 HUFA in liver of FFM group was comparable to WFM group but was significantly higher
than those in the NFM group. The condition factor, % of liver, spleen and heart weights, lipid and glycogen
contents in liver of NFM group were lower and moisture and protein in liver were higher compared
to WFM group. In blood characteristics of NFM group, haemoglobin and RBC were lower, but
MCV and MCH were significantly higher than those of WFM group. Besides these, the total protein and
cholesterol in blood plasma of NFM group were lower, but total bilirubin, GOT, GPT and ZTT were
higher than those of WFM group. The findings suggest that NFM group had a macrocytotic hyperchromenia
and a slight liver malfunction. On the other hand, no significant differences were found
between WFM group and FFM or defatted groups (DF-1 & DF-2) in all of the investigated parameters,
except slight lower W3 HUFA percentage between DF-1 and WFM group.