Lysine and arginine requirements of Salminus brasiliensis

Authors

  • Jony Koji Dairiki Embrapa Amazônia Ocidental
  • Ricardo Borghesi Embrapa
  • Carlos Tadeu dos Santos Dias ESALQ - USP
  • José Eurico Possebon Cyrino ESALQ - USP

DOI:

https://doi.org/10.1590/S1678-3921.pab2013.v48.10837

Keywords:

amino acid, dose‑response, dourado, regression

Abstract

The objective of this work was to determine the dietary lysine (DL) and dietary arginine (DA) requirements of dourado (Salminus brasiliensis), through dose‑response trials using the amino acid profiles of whole carcasses as a reference. Two experiments were carried out in a completely randomized design (n=4). In the first experiment, groups of 12 feed‑conditioned dourado juveniles (11.4±0.2 g) were stocked in 60 L cages placed in 300 L plastic indoor tanks in a closed circulation system. Fish were fed for 60 days on diets containing 1.0, 1.5, 2.0, 2.5, 3.0, or 3.5 % dietary lysine. In the second experiment, dourado juveniles (27.0±0.8 g) were fed for 60 days on semipurified diets containing arginine at 1.0, 1.5, 2.0, 2.5 or 3.0%, in similar conditions to those of the first experiment. Optimal DL requirements, as determined by broken‑line analysis method for final weight, weight gain and specific growth rate, were 2.15% DL or 5% lysine in dietary protein, and 1.48% DA or 3.43% arginine in dietary protein. The best feed conversion ratio is attained with 2.5% DL or 5.8% lysine in dietary protein and 1.4% DA or 3.25% arginine in dietary protein.

Author Biographies

Ricardo Borghesi, Embrapa

Embrapa Pantanal

Carlos Tadeu dos Santos Dias, ESALQ - USP

Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz

José Eurico Possebon Cyrino, ESALQ - USP

Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz

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Published

2013-10-31

How to Cite

Dairiki, J. K., Borghesi, R., Dias, C. T. dos S., & Cyrino, J. E. P. (2013). Lysine and arginine requirements of <i>Salminus brasiliensis</i>. Pesquisa Agropecuaria Brasileira, 48(8), 1012–1020. https://doi.org/10.1590/S1678-3921.pab2013.v48.10837