Apparent digestibility of diets with passion fruit seed flour on the productive performance of old blue native fish (Aequidens rivulatus) in the breeding stage

Abstract

The objective of this study was to evaluate the effect of diets based on passion fruit seed flour on yield, calculating weight gain (PI), relative weight increase (IPR), growth rate (TC), incremental growth rate (TC), feed conversion, apparent digestibility of dry matter (DM), protein (CP) and crude energy (EB), as well as feed cost and mortality of the old blue native fish at breeding stage. The final weight (PF), IP, IPR, TC, TCI, CA, the digestibility coefficients MS, PB and EB, feed costs and mortality were determined. There were no differences (P> 0.05) up to a 3% level of passion fruit seed flour, if there were differences in the 6 and 9% values ??in: PF, IP, IPR, TC and TCI. AC was efficient up to 6% passion fruit. As the passion fruit increased, the cost decreased. The partial replacement of fish meal up to 6% of passion fruit in the diets did not affect the productive performance in the PF, IP, IPR, TC, TCI and CA. The method of total fecal collection in each of the treatments and repetitions using the modified Guelph system was used with this direct method to obtain the apparent digestibility coefficients of MS, PB and EB, in relation to T2, T3 and T4; Are in general agreement with those described in different investigations with tilapia and cachama for MS, PB and EB that were similar