Brazil Study Results Encouraging For Injector Aeration In Super-Intensive Shrimp Culture

摘要

Zero-exchange biofloc systems for shrimp culture allow elevated stocking densities and production, but also require more dissolved oxygen and thorough water circulation. A new type of air injector for such systems uses only a centrifugal pump to recirculate water while naturally aspirating ambient air. Mounted on raceway bottoms, the injectors mix water vertically while creating a horizontal current to keep solids in suspension and help distribute feeds. In research in Brazil, the injectors comparedwell to other aerators in nursery and growout culture.