Abstract

The aim of this study was to evaluate the performance of different rate in percentage feeding of the productivity (Body weight (BW) and feed conversion (FC)) of juvenile tambaqui ( Colossoma macropomum), with a total of 13500 animals, distributed in nine cages, with n = 1500 fish/cage, with three replicates in a period of four weeks. The animals were feed with three treatments: treatment 1 (2% BW); treatment 2 ( 3% BW) and treatment 3 (4% BW), divided in two meals, and feed with commercial food 36% crude protein. The BW gain was significantly higher for the animals that received feed rate of 4% BW. However, apparent feed conversion was better when used the rate of (2% BW- treatment 1) of tambaqui reared in cages.

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