Influence of stocking density in the zootechnical performance of Pacu during the pre grow-out phase

Authors

  • Luiz Henrique Castro David Centro de Aquicultura da Unesp - CAUNESP
  • Rogério Corrêa da Rocha
  • Thiago Bif Piazza
  • Maurício Gustavo Coelho Emerenciano Professor do Programa de Pós-Graduação em Zootecnia (PPGZOO/UDESC), Universidade do Estado de Santa Catarina, campus Chapecó, SC, Brasil. CSIRO Agricultura e Alimentação, Programa de Aquicultura, Centro de Pesquisas da Ilha de Bribie, Woorim, QLD, Austrália.
  • Giovanni Lemos de Mello

DOI:

https://doi.org/10.32360/acmar.v52i1.33908

Abstract

The aim of this work was to evaluate the influence of three stocking densities (50, 100 and 150.fish/m3) on growth of pacu juveniles (5.19 ± 0.40 g). The study was developed at the Aquaculture Laboratory (LAQ), UDESC / Laguna (SC). A total of 180 pacu juveniles were used, these were distributed in nine experimental units, arranged in three identical water recirculation systems, with three replicates. Fish were fed with pelleted feed (27% CP) twice daily until to apparent satiety for 69 days. Survival was 100% in all treatments. There were no significant differences in the final weight, condition factor, specific growth rate (TCE), weight gain and apparent feed conversion between the different densities tested. The mean TCE was 1.50 ± 0.09%.dia-1, similar to other studies with the species in this weight range, suggesting that the experimental conditions and densities evaluated were adequate. This shows that pacu presents potential for growth at high densities.
Keywords: native species, Piaractus mesopotamicus, recirculating aquaculture system.

Published

2019-10-23