The effect of brown alga extract, Stoechospermum marginatum,on growth performance, body chemical compositions and several of serum biochemical parametersin grey mullet, Mugil cephalus Linnaeus 1758

Abstract

Introduction: This experiment was conducted to evaluate the effect of,Stoechospermum marginatum extract on the growth performances, body chemical and several of serum biochemical parameters in Mugil cephalus for 60 days.
Materials & Methods: The experiment was conducted in a completely randomized design with 120 of grey mullet (with average weight of 9.56±1.02g) in 4 treatments and 3 replicates (n=10 in each replicate) and included: control group without using algae extract, another groups (treatment 2, 3 and 4) the amounts of this extract were 5,10 and 15 g/kg food.
Results: The results showed that at the end of experiment, the highest FW (32.89±2.74g), the highest WG (292.56±35.01%) the lowest FCR (0.95±0.05), the highest VFI (1.74±0.42 %), the highest crude protein (20.50±1.29%), lowest crude lipid (6.73±1.13%), the highest globulin (4.27±0.12 g/dL), albumin (2.63±0.18 g/dL) and total protein (6.84±0.54 g/dL) were observed in the diet containing 15 g/kg algae extract in all of these parameters, treatment 4 showed a significant difference compared with control treatment (P<0.05). The lowest cholesterol and triglyceride were observed in the diets containing 10 and 15 g/kg algae extract which showed a significant difference compared with control treatment (P<0.05).
Conclusion: Finally, the present results suggest that diet containing 15 g/kg Stoechospermum marginatum extract could improve growth, carcass quality and serum biochemical parameters in Mugil cephalus larvae.