Zootechnical Performance and Some Physiological Indices of Tambaqui, Colossoma macropomum Juveniles during Biofloc Maturation and in Different Feed Regimes

Cintia Labussière Nakayama, Luiz Felipe Silveira Silva, Fabio Aremil Costa dos Santos, Tulio Pacheco Boaventura, Gisele Cristina Favero, Glauber David Almeida Palheta, Nuno Filipe Alves Correia de Melo, Luiz Alberto Romano and Ronald Kennedy Luz
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Cintia Labussière Nakayama: Laboratório de Aquacultura, Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais-UFMG, Avenida Antônio Carlos 6627, Belo Horizonte CEP 31270-901, MG, Brazil
Luiz Felipe Silveira Silva: Laboratório de Aquacultura, Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais-UFMG, Avenida Antônio Carlos 6627, Belo Horizonte CEP 31270-901, MG, Brazil
Fabio Aremil Costa dos Santos: Laboratório de Aquacultura, Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais-UFMG, Avenida Antônio Carlos 6627, Belo Horizonte CEP 31270-901, MG, Brazil
Tulio Pacheco Boaventura: Laboratório de Aquacultura, Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais-UFMG, Avenida Antônio Carlos 6627, Belo Horizonte CEP 31270-901, MG, Brazil
Gisele Cristina Favero: Laboratório de Aquacultura, Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais-UFMG, Avenida Antônio Carlos 6627, Belo Horizonte CEP 31270-901, MG, Brazil
Glauber David Almeida Palheta: Programa de Pós-Graduação em Aquicultura e Recursos Aquáticos Tropicais, Instituto Socioambiental e dos Recursos Hídricos, Universidade Federal Rural da Amazônia-UFRA, Avenida Presidente Tancredo Neves 2501, Belém CEP 66077-830, PA, Brazil
Nuno Filipe Alves Correia de Melo: Programa de Pós-Graduação em Aquicultura e Recursos Aquáticos Tropicais, Instituto Socioambiental e dos Recursos Hídricos, Universidade Federal Rural da Amazônia-UFRA, Avenida Presidente Tancredo Neves 2501, Belém CEP 66077-830, PA, Brazil
Luiz Alberto Romano: Laboratório de Imunologia e Patologia de Organismos Aquáticos, Instituto de Oceanografia, Campus Carreiros, Universidade Federal do Rio Grande-FURG, Av. Itália, km 8, Rio Grande CEP 96201-900, RS, Brazil
Ronald Kennedy Luz: Laboratório de Aquacultura, Departamento de Zootecnia, Escola de Veterinária, Universidade Federal de Minas Gerais-UFMG, Avenida Antônio Carlos 6627, Belo Horizonte CEP 31270-901, MG, Brazil

Agriculture, 2022, vol. 12, issue 7, 1-15

Abstract: The objective was to evaluate the hematological and biochemical blood parameters and performance of Colossoma macropomum submitted to BFT maturation and under different feeding regimes. BFT maturation was carried out for 60 days (Phase 1). Feeding on six or seven days a week and feeding rates of 4% or 6% of biomass were tested (Phase 2). The water quality parameters were monitored throughout the experimental period. At the end of Phases 1 and 2, blood samples and zootechnical performance were evaluated. In Phase 1, total ammonia was higher on the 17th day (1.25 mg TAN L −1 ) and stabilized from the 21st day onwards. Nitrite reached a peak (9.67 mg L −1 ) on the 26th day. There was an increase in nitrate between the 25th and 60th day (1.79 ± 0.01 vs. 5.45 ± 0.01 mg N-NO 3 − L −1 , respectively). FCR (1.90 ± 0.21), weight gain (9.81 ± 1.08 g), and SGR (1.26 ± 0.12%) were highest at 30 days of phase 1. The glucose level (118.23 ± 26.30 mg dL − 1 ) was highest on the 30th day. The plasmatic protein (5.36 ± 0.30 g dL −1 ) and alanine aminotransferase (ALT) levels (27.58 ± 6.58 UI mL − 1 ) were highest after 60 days. The hemoglobin level (5.77 ± 0.74 g dL − 1 ) was lowest after 30 days. In Phase 2, the triglycerides, ALT, and hematocrit levels were different at the end of the experiment under all feeding regimes. Histological analysis of gills showed a normal condition for fish under BFT. It was possible to apply a feeding regime of six days a week and 4% biomass for juveniles, with 43 g on average.

Keywords: tambaqui; intensive production; BFT; feeding schemes (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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