Utilização de resíduo oriundo do beneficiamento do camarão em rações completas para curimatã-pacu

Abstract

The present research evaluated the productive performance, heterogeneous growth, body composition and economic viability of Curimatã-pacu fingerlings (Prochilodus argenteus) fed with different levels of shrimp meal (CF) in the diet. The research was conducted at the Laboratory of Aquaculture and Water Analysis (Laqua) /CECA-UFAL with a duration of 60 days of experimentation. In this one, 120 fingerlings were distributed in 24 experimental aquariums in a water recirculation system with a biofilter, using four treatments (T1 – 0% FC addition to the diet, T2 –15% FC addition to the diet, T3 – 30 % CF addition in the diet and T4 – 45% CF addition in the ration with six replicates each, and five fish for each experimental unit, arranged in a completely randomized design. three times a day (morning and afternoon) at predetermined times, until the animals are apparently satiated. The feed used was pelleted with the same nutritional standards in all treatments, according to the recommendations for the species. the evaluation of productive performance, physiological parameters, body composition and heterogeneous growth was carried out at the end of the experimental period for biometrics (weight and size), in addition to monitoring the quality of water and of the economic viability of the use of FC in the ration. There was no significant difference between the treatments for any variable of the physiological parameters, however, the variables average feed intake and protein efficiency rate showed a statistical difference, while the variables of initial weight, final weight, weight gain, apparent feed conversion, total length, standard length, head length, height, width, profile index, head index, condition factor and specific growth rate, there was no statistical difference (P>0.05), The heterogeneous growth between treatments was mitigated when there was no inclusion of the RC (p<0.05). In body composition, only the levels of dry matter (DM) and mineral matter (MM) showed a significant difference (p<0.01) with a higher percentage in treatments with 30 and 45% of inclusion of CR. The inclusion of up to 30% of CR revealed lower costs. The highest level studied is recommended, that is, the inclusion of up to 30% of shrimp meal.

Keywords: nutrition, alternative ingredient, fish farming, Prochilodus argenteus.