International Journal of Life Science and Agriculture Research

The protein requirement for gamitana in the fry stage, was determined through the zootechnical parameters of liweweight gain and food conversion. There were used 128 gamitana fingerling of 3.19 g on average liweweight with increasing levels of protein (30%, 32%, 34% and 36%). Diets were isoenergetics (3.6 Mcal/kg DE), were fed for six weeks. The protein requirement was determined by the quadratic polynomial regression method. The results were: the protein requirement for the gamitana fingerling with the daily weight gain variable was 32.61%, and with the food conversion variable it was 33.83%.

Gamitana, Colossoma macropomum, Protein requirement.

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