The effect of different levels of fucoidan on fatty acid profile and growth of rainbow trout were investigated. 150 fish (average weight 18.84?70.7) were distributed in 15 fiberglass tanks (100 liters) and fed for 8 weeks at different levels (0 (control), 0.1%, 0.5%, 1% and 2% fucoidan). The results showed that the treatment with the highest amount of fucoidan had the highest final weight, specific growth rate and body weight gain, and there was a significant difference between treatments (p< 0.05). There was no significant difference between feed conversion ratio and different treatments (p> 0.05). The difference between EPA, DHA, SFA, MUFA, n-3, HUFA and ratio of n-3 to n-6 was not significant (p> 0.05), while PUFA and Arachidonic acid si

Fucoidan, a water-soluble heteropolysaccharide that contains fucose and sulfate groups which found in the cellular wall of brown algae which in this study, the effects of its various levels on the non-specific immune response, blood biochemical factors and antibacterial activity of serum in rainbow trout (Oncorhynchus mykiss), with mean weight of 74.8?70 g for 8 weeks were investigated. The treatments consisted of 0 (control), 0.1, 0.5, 1 and 2% of fucoidan per kg of diet in the form of five treatments, three replications were performed in 100 liters tanks. Based on the findings of this study, there were no significant different among different groups of RBC indices such as RBC, HB, HCT, MCV, MCHC and MCH (p> 0.05), while the number of WBC

Spirulina has been highlighted as a valuable complementary ingredient in aquafeeds due to its high protein and vitamin content, in addition to other nutritional benefits. To evaluate the effect of dietary spirulina inclusion in fish meal sparing (FMS) on juvenile Caspian brown trout as a slow‐growth fish, a complete randomized experimental design was developed with five treatments: 0% (control), 2% FMS (13.2?g/kg spirulina in diet), 4% FMS (26.4?g/kg spirulina in diet), 6% FMS (39.6?g/kg spirulina in diet) and 8% FMS (52.8?g/kg spirulina in diet). Six hundred juveniles (11.0???1.0?g) were assigned to 15 experimental tanks. Although this fish is sensitive to diet composition, fish fed the 6% FMS and 8% FMS diets had a significantly higher