Study on Effect of Red Bell Pepper on Growth, Pigmentation and Blood Factors of Rainbow Trout (Oncorhynchus mykiss)

Abstract

5 Abstract: The effect of red bell pepper andastaxanthin on growth,pigmentation and blood factors of rainbow trout weighted average (93±0.64g) were studiedfor 8 weeks. Five treatments(three replicates/treatment) were employed as follows: treatmentA:fed with commercial diet (control), treatment B: 41 mg/kg AS (astaxanthin as positive control), treatment C: 33 mg/kg RP (Red pepper), treatment D: 44 mg/kg RP, treatments E: 55 mg/kg RP. All treatments were fed in hours 8,12,16, respectively. It should be considered that the feeding rate of biomass weight after each took biometrics. Finally, blood samples were taken from the caudal vein of fish. The results showed a significant difference between treatments in terms of weight and length (p 0.05) in food intake and growth performance parameters, including Food conversion ration, Specific growth rate, Growth rate, Body weight increase and survival rate but the parameter of Condition factor showed a significant difference between treatments (p 0.05). The results showed that the use of vegetable ingredients in diets for rainbow trout is an effective and affordable and the diet of 55mg/kg red bell pepper is available diet in raising rainbow trout.