%0 Journal Article %T Prote¨ªna e energia na dieta de jundi¨¢s criados em tanques-rede %A Freitas %A Jakeline Marcela Azambuja de %A Sary %A Cesar %A Luchesi %A J¨²nior Dasoler %A Feiden %A Aldi %A Boscolo %A Wilson Rog¨¦rio %J Revista Brasileira de Zootecnia %D 2011 %I Sociedade Brasileira de Zootecnia %R 10.1590/S1516-35982011001200002 %X the objective of this study was to evaluate the influence of two levels of digestible energy (3250 and 3500 kcal kg-1) in conjunction with three levels of crude protein (25, 30 and 35%) on the productive performance of catfish (rhamdia voulezi) juveniles. two-hundred and forty catfish juveniles with 95.55¡À6.70 g average weight and 20.43¡À1.13 cm total length were randomly assigned into twenty-four 370 l-cages, in a factorial arrangement with six treatments and four reptitions. feeding was performed four times a day, ad libitum. at end of experimental period, the factorial analysis of variance showed significant influence with respect to the different parameters evaluated. the fish fed with diets of 30% crude protein and 3,250 kcal digestible energy kg-1 of diet presented the best results. therefore, diets with at least 30% crude protein and 3,250 kcal digestible energy kg-1 are recommend for catfish juveniles. %K aquiculture %K native species %K nutrition requirement. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-35982011001200002&lng=en&nrm=iso&tlng=en