Proximal composition, caloric value and price-nutrients correlation of comercial cuts of tambaqui (Colossoma macropomum) and pirarucu (Arapaima gigas) in diferente body weight classes (Amazon: Brazil)

The aimed of the study was to evaluate caloric value as a function proximal composition and correlate selling price with nutritional values ​​of commercial cuts tambaqui (Colossoma macropomum) pirarucu (Arapaima gigas) in different weight classes. sample collections were performed two processing units located state Rondônia, Brazil. Were 200 tambaquis five classes studied. And, 77 pirarucus studied seven design completely randomized, carried out triplicate. Kruskal-Wallis test (α=0.05) used compare averages Spearman correlation (ρ) between nutrients. highest filet (145.70 kcal/100g) mignon (119.11 (p<0.05). And less steak (100.47 loin 102.01 It also observed that variables protein content did not kilo fish for cuts, which leads infer that, possibly, sensorial, market cultural factors responsible variations. Regarding according tambaqui, Class 4 most efficient category production commercialization. pirarucu, presented satisfactory proteins lipids good percentage mineral matter.