This work was carried out with the objective of evaluate four stocking densities of bullfrog (post-metamorphic) in mini-stalls. The densities studied were D1: 75 bullfrogs/m² (initial) and 35 bullfrogs/m² (finishing); D2: 105 bullfrogs/m² (initial) and 50 bullfrogs/m² (finishing); D3: 125 bullfrogs/m² (initial) and 60 bullfrogs/m² (finishing); and D4: 160 bullfrogs/m² (initial) and 75 bullfrogs/m² (finishing). The performance trial was carried out with 558 bullfrogs averaging initial weight of 26.80 g, during 56 days, according to a completely randomized blocks design with six replicates. Inversely proportional effects of densities on weight gain were observed. Smaller densities resulted in greater values of feed intake, and the initial densities of 75 and 105 bullfrogs/m² resulted in higher values of feed intake than 125 and 160 bullfrogs/m². The apparent feed conversion also varied , showing the worst average on initial density of 160 bullfrogs/m². Economic analysis was performed with the costs with feeding, gross income and partial net income. It was concluded that the final density of 50 bullfrogs/m² increased the partial net income and was indicated for production of bullfrogs.
bullfrog culture; economic evaluate
