CULTIVATION OF TAMBAQUIS FROM PRE-FATTENING TO SLAUGHTER WITH DIFFERENT FEEDING RATES

• Autor(a) principal: Oliveira, Cidiane Melo
• Data de Publicação: 2017
• Outros Autores: Sousa, Raniere Garcez Costa
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biota Amazônia
• Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/3589

The present research aimed to assess different feeding rates in Colossoma macropomum (tambaqui) farming in excavated pounds, for a period of twenty months (August 2015 to April 2017). For this study 300 fish were selected, with initial average weight of 50 g each individual, in which four feeding rates were tested: 0.5 (T1), 1.0 (T2), 1.5 (T3) and 2.0% (T4) of the living fish weight per day (FW day-1). The fish feed used in the experiment was extruded commercial containing 22% of crude protein. Periodical (biweekly) samplings were carried out for measuring weight (g) and length (cm) of individuals, simultaneously monitoring of water quality parameters. Throughout the research, the limnological variables remained within the limits set for the cultivation of tropical fish. The results suggest that it is possible to manage the tambaqui (feed rate in relation to the FW of fish per day) in stages of cultivation: phase 1 (≈ 50 to ≈ 250 g) forage fish with 0.5% rate; phase 2 (≈ 250 to ≈ 1000 g) with a rate of 2.0%, and phase 3 (≈ 1000 the ≈ 2000 g) feed fish with 1.5% rate of FW day-1. Besides, it is necessary that the support capacity used in the fish farm stay between 800 to 1000 g/m², since larger values resulted in a low zoo-technical yield of individuals. Fish treated with 1.5% of the FW day-1 presented the bests finals total apparent food conversion values (tAFC) = 2.2 and weight (2.11 kg), suggesting that this feeding rate is the most efficient and economically appropriate for the tambaqui cultivation.Keywords: Colossoma macropomum; zootechnical performance; fish farming.