Diferentes níveis de incorporação de farinha de resíduos de jundiás (Rhamdia quelen) cultivados na dieta

Abstract

The study was carried out at the Fish Farming Laboratory of the Animal Science Department, Federal University of Santa Maria, during 8 weeks, from April to June 2011. The objective of this study was to define the best level of incorporation of waste in food fish of juvenile Jundiá in water recirculation system using 450 fingerlings of jundiá with initial average weight of 7.2±0.27g. We tested 5 different diets in three repetitions with different levels of incorporation of carcasse jundiá with viscera meal (FCJCV) (0, 3.75, 7.5, 15, and 30%). The diets contained 37% CP and 3200kcal/kg of ME. Data were collected from daily weight gain, survival, condition factor, specific growth rate, feed conversion, carcass yield, protein efficiency ratio and deposition of body protein and lipid. The weight gain was greater with the inclusion of 30% FCJCV with final weight of 45.47g and daily weight gain of 0.68g/day. The diet with inclusion of 30% FCJCV showed better values for specific growth rate (3.34%/day), feed conversion ratio (1.05: 1), final biomass (1105.45g), body protein deposition (64.9mg/day), protein efficiency ratio (1.9) and protein retention coefficient (1.96%). In conclusion, the use of processing waste meal of jundiá in the level of 30% in the diet showed the highest efficiency in the development of juvenile jundiá.