AGRICULTURA SUSTENTABLE

Abstract

Bester sturgeon is considered a hybrid (cross between beluga Huso huso (Linnaeus, 1758) female and sterlet Acipenser ruthenus Linnaeus, 1758 male) with great potential for intensive aquaculture technology due to its quality caviar and meat production. Apart from Russia, first promising experiments on sturgeon culture have been carried out in several European countries (Germany, Hungary, France) and Japan as well as the U.S.A. Yet, in the field of bester sturgeon nutrition many authors consider that further investigation is desirable. In this context, the present experiment has as main goal the evaluation of bester capability for nutrients utilization and feed conversion under different feeding rates and environmental conditions. The trails were conducted in an experimental recirculating system and an aquaponic system in different development stages. For both experiments "Troco supreme" fodder with 46% protein content was used. The feeding efficiency was assessed through technological indicators. The fish condition (allometric factor) and growth performance was assessed for both rearing systems: standard RAS and aquaponic RAS.