Oreochromis niloticus aquaculture with biofloc technology, photoautotrophic conditions and Chlorella microalgae

Yenitze E. Fimbres-Acedo, Paola Magallón-Servín, Rodolfo Garza-Torres, Maurício G.C. Emerenciano, Rosalía Servín-Villegas, Masato Endo, Kevin M. Fitzsimmons, Francisco J. Magallón-Barajas

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

In this manuscript (Part I), the zootechnical performance of tilapia (Oreochromis niloticus) culture during the nursery and grow-out phases using biofloc technology (BFT) with three photoautotrophic pathway treatments (Chlorella spp., M; Chlorella sorokiniana 2,805, CS; and Chlorella sorokiniana 2,714, CV) was evaluated using high protein feed (40.6%) at a C:N ratio of 7.69:1. Two additional treatments were included as controls: a chemoautotrophic (Q) treatment with a C:N ratio of 7.69:1 and a heterotrophic (H) treatment with a C:N ratio of 13:1. Differences in growth and weight gain were observed among the photoautotrophic treatments and Q and H treatments (p <.05). An increase in nitrates in all photoautotrophic treatments suggests that a chemoautotrophic pathway naturally occurred. For O. niloticus carcasses, the protein (>50.9%) and crude lipid (>23.1%) levels were not significantly different among treatments (p >.05). For the Q treatment, the highest crude protein (42.6%) and crude lipid (1.1%) levels in biofloc were observed during the nursery phase (p <.05). Correlation analyses between the amino acid composition in O. niloticus and that of the feed highlighted deficiencies with regard to methionine, lysine and threonine content despite the high r2 value obtained (.9078). In addition, deficiencies in arginine, lysine and taurine were observed in the biofloc (r2 =.7265). In Part II, the physicochemical characterization of nutrient residuals and O. niloticus BFT aquaculture integration with hydroponic horticulture in non-recirculated systems is described.

Original languageEnglish (US)
Pages (from-to)3323-3346
Number of pages24
JournalAquaculture Research
Volume51
Issue number8
DOIs
StatePublished - Aug 1 2020

Keywords

  • amino acid
  • grow-out
  • nursery
  • Oreochromis niloticus
  • trophic level

ASJC Scopus subject areas

  • Aquatic Science

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    Fimbres-Acedo, Y. E., Magallón-Servín, P., Garza-Torres, R., Emerenciano, M. G. C., Servín-Villegas, R., Endo, M., Fitzsimmons, K. M., & Magallón-Barajas, F. J. (2020). Oreochromis niloticus aquaculture with biofloc technology, photoautotrophic conditions and Chlorella microalgae. Aquaculture Research, 51(8), 3323-3346. https://doi.org/10.1111/are.14668