Modeling of discharges from the breeding basins of rainbow trout fed with three extruded feeds (B, F1, and F2)

The main of this study is to estimate the maximum density fish in growing basins rainbow trout (Oncorhynkiss Mykiss) species by mathematical equations, which will be used introduce environmental concerns. Indeed, these equations make it possible fed extruded feed B and two elaborated exruded feeds (F1 F2) achieve an optimal production without harming environment. Note that elements (PO43-, NH4 +, NO2-, NO3-, SM, COD) were analyzed during grow-out test breeding station 'Oum Er rbia. According results modeling as a function physicochemical parameters, can increase up ρF2 = 237.09 Kg / m3 affecting quality water while respecting required standards. Our show F2 formulation, containing 60% protein animal origin 40% vegetable gives great zootechnical growth with low waste.