Dietary crude protein levels for juvenile beta

Authors

  • Jener Alexandre Sampaio ZUANON Universidade Federal de Viçosa, Departamento de Biologia Animal
  • Juliane Aparecida MORAIS Universidade Federal de Viçosa, Departamento de Biologia Animal
  • Antônio Policarpo Souza CARNEIRO Universidade Federal de Viçosa, Departamento de Biologia Animal
  • Daniel Abreu Vasconcelos CAMPELO Aluno de Pós Graduação - Universidade Estadual de Maringá, Departamento de Zootecnia
  • Marcelo Duarte PONTES Fundação Instituto de Pesca do Estado do Rio de Janeiro image/svg+xml http://orcid.org/0000-0003-3344-1411 (unauthenticated)
  • Ana Lúcia SALARO Universidade Federal de Viçosa, Departamento de Biologia Animal

DOI:

https://doi.org/10.20950/1678-2305.2016v42n3p590

Keywords:

growth, nutritional requirements, ornamental fish, productive performance

Abstract

The aim of this study was to evaluate the dietary crude protein requirements of juvenile Betta splendens. Isocaloric diets were used with six levels (27, 31, 35, 39, 43 e 47%) of crude protein (CP) in entirely randomised design with four repetitions. Fish with an average weight of 0.11 ± 0.02g were fed three times a day for 30 days. At the end of the experiment were evaluated: survival rate (SR); weight gain (WG); feed intake (FI); protein intake (PI); feed conversion (FC); protein efficiency ratio (PER); and specific growth rate (SGR). For FI, FC and PER, a negative linear effect of dietary CP levels was observed (p < 0.05). A quadratic effect of dietary CP levels for SR, WG and SGR was also observed and the estimated values which maximise the respective parameters were 30.95, 33.13 and 29.55% of CP. Thus, we concluded that the requirement for protein for juvenile Betta splendens is between 30 and 33% CP.

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Published

2016-09-30

Issue

Vol. 42 No. 3 (2016): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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