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[Use of almond leaf as additive in diets for Betta splendens]

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posted on 08.04.2020, 02:46 by E.L. Santos, W.D.S. Oliveira, M.R. Lima, L.L.A. Silva, J.M. Oliveira, T.J. Silva, C.I. Santos, E.C. Soares

ABSTRACT The objective of this study was to evaluate the performance, morphometric parameters, social behavior, economic viability, the presence of enterobacteria in the intestinal contents and a microbiological analysis of the water culture of Betta splendens fed with almond-tree-leaf flour (ATLF) as an additive. Twenty-eight male B. splendens were individually put in 1.5 L aquariums. The experiment was done in a completely randomized experimental design with four treatments: 0.00%; 0.25%; 0.50% and 0.75%, of the ATLF, dehydrated Terminalia catappa with seven repetitions each. At the end of the experimental period, the parameters were evaluated: performance (daily weight gain, feed intake, apparent feed conversion, protein efficiency rate, specific growth rate and condition factor), morphometric (total length, standard head, height, profile index and head index), social behavior, economic viability of the feed, microbial analysis of intestinal contents, fillet and scales, and microbiological analysis of the water. Though ANAVA, Tukey test and regression analysis (P> 0.05), the parameters: final weight, weight gain, standard length, total length and specific growth rate were influenced by the treatments (P< 0.05), presenting a quadratic effect. Therefore, the 0.50% level of Terminalia catappa is recommended as additive in Betta splendens diets.

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