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One of the main problems of the fishculture is the high cost the ration that gets to compose up to 80% of the total cost of the activity, because a diet doesn’t exist with regional products that lowered that cost. With base in that reality, the Amazon area throws hand of by-products of the agroindustry of easy acquisition and low cost, to minimize the expenses with the fishculture and to guarantee the presence of the fish in the table of the population, that is the consumed food. In the experiment the used species was the tambaqui, Colossoma macropomum it is an ideal species for fishculture in várzea area by virtue of its rusticity. The experiment was accomplished in the area of várzea of UFRA, where they were submitted to 3 treatments, where: V1) it was administrated ration extrused 28% P.B.; V2) ration commercial extrused 28% parceled out with mass of white cassava and V3) it was administrated mass of white cassava. At the end of the experiment it was observed that the nursery where was administrated commercial ration presented better acting zootecnic, even so the nursery 2 where it was administrated) ration commercial estrusada 28% parceled out with mass of white cassava presented a similar acting to the previous, obtaining smaller consumption 50% of ration extrused.

Crescimento do Tambaqui (Colossoma macropomum) Utilizando Massa da Mandioca (Manihot esculenta) Branca como Alimentação Suplementar