Growth of juvenile Piaractus brachypomus fed diets containing different profiles of essential amino acids

Authors

  • Wálter Vásquez‑Torres Universidad de los Llanos-Colombia
  • José Alfredo Arias-Castellanos Universidad de los Llanos-Colombia

DOI:

https://doi.org/10.1590/S1678-3921.pab2013.v48.10896

Keywords:

casein, nutrient use efficiency, chemical score, amino acid requirement, gelatin, pirapitinga

Abstract

The objective of this work was to determine the effect of diets with different profiles of essential amino acids (EAA) on nutrient use efficiency and growth of juvenile pirapitinga (Piaractus brachypomus). Casein and gelatin were used as protein sources, and nine diets were formulated with casein concentration between 0 and 35%, with 4.4% increments and concomitant reduction of gelatin proportion. The amino acid profile of casein, gelatin, and tissue samples from the whole body of juvenile pirapitinga was determined. Dietary levels of casein showed a positive quadratic effect on zootechnical variables. The chemical score between the amino acid profile of body protein and the profile of experimental diets showed that in diets with 31.6 and 35% casein, arginine content becomes limiting. The profile of body amino acids of pirapitinga was similar to the pattern described for teleosts. The amino acid profile obtained with the mixture of casein and gelatin at the ratio of 8:1 is close to the one required for growth of juvenile Piaractus brachypomus.

Author Biographies

Wálter Vásquez‑Torres, Universidad de los Llanos-Colombia

Biólogo, Universidad Nacional de Colombia
MSc Aquacultura, UFSC,  Florinópolis, Brasil
Doutor Ciências Biologicas, UFA/INPA, Manaus, Brasil
Docente T. C. Instituto de Acuiculutra de la Universidad de los Llanos, Villavicencio, Meta, Colombia.           Area de Investigación: Nutrición de organismos acuáticos

José Alfredo Arias-Castellanos, Universidad de los Llanos-Colombia

Biólogo, Universidad Nacionald de Colombia; MSc. Biologia, Facultad de Ciencias, Universidad Nacional de Colombia; Doutor en Biologia, Universidad Del Valle, Colombia; Docente T. C. Instituto de Acuiculutra de la Universidad de los Llanos, Villavicencio, Meta, Colombia. Area de Investigación: Biologia y reproducción de organismos acuáticos

Published

2013-10-31

How to Cite

Vásquez‑Torres, W., & Arias-Castellanos, J. A. (2013). Growth of juvenile <i>Piaractus brachypomus</i> fed diets containing different profiles of essential amino acids. Pesquisa Agropecuaria Brasileira, 48(8), 849–856. https://doi.org/10.1590/S1678-3921.pab2013.v48.10896