Abstract:
The current work assessed the inclusion impacts of oilseed camelina meal (CM) as a protein source in red sea
bream (Pagrus major) diets. A 45 day assessment period with 180 juveniles (6.47 ± 0.17 g) were allocated in
triplicates to 4 experimental groups and fed formulated diets in which fish meal (FM) was subrogated at graded
series of 0% (T1), 20.5% soybean meal (T2), 20.5% camelina meal (T3), and 33% camelina meal (T4). No
noticeable alterations were observed in specific growth rate, feed intake, survival rate, hepatosomatic index, and
Fulton’s condition factor among the experimental groups. Fish fed the T4 diet showed considerably reduced (P <
0.05) final weight and body protein content when compared to those fed T2, T3, and basal diets. Plasma
biochemical parameters show no differences (P > 0.05) in glucose, total bilirubin, total protein, total cholesterol,
triglyceride, glutamyl oxaloacetic transaminase, and glutamic pyruvate transaminase. Hematocrit levels
decreased noticeably (P < 0.05) in fish groups fed camelina meal in comparison to the control group. Liver and
intestinal histology showed a healthy status and an increase in villus length and goblet cell number in camelina
groups. Fish fed the T4 diet displayed higher expression levels (P < 0.05) of relative mRNA interleukin 1 beta (IL 1b) and tumor necrosis factor-alpha (TNF-α) in comparison to other groups. The inclusion of camelina meal (up
to 20%) in red sea bream diets produced similar outcomes to specimens fed fish meal and soybean meal.
