TAGUCHI’S LOSS FUNCTION APPLIED IN THE BREEDING OF NILE TILAPIA Oreochromis niloticus FED WITH DIFFERENT LEVELS OF ALCOHOL YEAST, STOCHED IN AMIANTHUS BOX

Authors

  • Vandir MEDRI Prof. Associado - Department of Applied Mathematics, State University of Londrina, Londrina, Paraná
  • Geny Varéa PEREIRA Profa Adjunto - Departament of Biochemistry, State University of Londrina, Londrina, Paraná
  • Júlio Hermann LEONHARDT Prof. Associado - Departament of Animal and Vegetal Biology, State University of Londrina, Londrina, Paraná

Keywords:

yeast, quality, ration, Taguchi’s loss function, Oreochromis niloticus

Abstract

Two hundred and forty 45-day-old fingerlings of Nile tilapia (Oreochromis niloticus), sexually reverted with an initial average weight of 1.25 ± 0.14 g and placed in amianthus box, were used. The effect of rations with 10%, 20% and 30% of distillery yeast on the function Taguchi's loss, was evaluated. The average results obtained in the limnological parameters for the water quality control by means of the chemical analysis were considered normal. Taguchi's losses for the total production, for the dead and for the discarded fish do not show a correlation with the different levels of alcohol yeast in the ration, showing that the choice of the yeast leveI for these fishes depends on its availability and cost. lt was observed that the losses can be attributed to the density limit, absence of natural feeding and great scattering in the fishes' size.

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Published

2018-10-26

Issue

Vol. 25 No. único (1999): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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