Avaliação do Ganho de Peso do Tambaqui Cultivado com Diferentes Taxas de Proteínas na Alimentação

Abstract

The present study occurred from the period of September to December of the year 2014, in order to evaluate the influence of fish dry feed containing different brute protein - BP (28% and 32%), on the weight gain of tambaqui Colossoma macropomum supplied with these dissimilar diets. Hence, were evaluated 500 samples of tambaqui with initial average weight of 225.33 g ± 11.31 cultivated until the caught phase with ≈ 1000 g, these individuals where divided and cultivated in two tanks apart. Biometry were realized on 10% of the total of individuals randomly, to measure de weight (g) and the length (cm) of the fish. In the same time, data related to limnological parameters of the tanks were sampled. The joint of information sampled were subsequent used to statistical calculations, applying the Statistic 9.0 pack, considering α = 0.05 as a statistical significance for all analysis. The results showed that the brute proteins rates of 28 and 32% of fish dry feed did not influenced significantly in the tambaqui weight gain and length between the different groups tested. Also, the lower protein rate with 28% BP in the fish dry feed still the most adequate to cultivate this specie once it has better benefit cost.