EXTRATOS VEGETAIS COMO PROMOTOR DE CRESCIMENTO EM LARVAS DO PEIXE ORNAMENTAL AMAZÔNICO Pyrrhulina brevis

Abstract

The objective of the present study was to evaluate the effects of the aqueous extract of three herbal plants, Terminallia catappa, Camellia sinensis and Mentha piperita on the productive performance of Pyrrhulina brevis larvae. For the tests, a random design was used with five concentrations of aqueous extract of each plant (0, 0.25, 0.5, 0.75 and 1g L-1 ) and density of 10 larvae L-1 , with 4 replications, during 20 days of larviculture. The results showed that the use of the aqueous extract of T. catappa does not influence the increase in the zootechnical performance of the larvae, however, its use promotes better survival and uniformity of the batch. The use of aqueous extract of C. sinensis improves zootechnical performance at concentrations of 0.5 and 0.75g L-1 with an increase in weight and length, but does not influence the other parameters evaluated. And the use of M. piperita, in addition to promoting weight and length increment, improves uniformity and survival rates when used in concentrations equal to or greater than 5g L-1.