Equipements pour fabriquer des granules par voie humide destinés aux animaux marins

The purpose of feeding marine animaIs (shrimps and fish) has been examined by CNEXO in a tropical area (Tahiti, French Polynesia) fer developing aquaculture with intensive methods. A food pilot plant unit has been built in 1973 in order to make water-stable pellets. The rirst step is to demonstrate the technical feasibility of such a unit with an experimental alm. The method described in this paper originates from the adaptation of equipment which works by moistening different meals. An extrusion without steam occurs through a granulating press followed by a drying operation in a sun drier, which works with an addition al heat exchanger. Il seems as if the devices described are adaptable to food production for rish in temperate or warm-water, and a review of some of them that are particularly convenient is given. From a formulation point of view, several ingredient mixtures are examined, as weil as the addition of various binding agents. Water stability is checked in vitro, in tanks and in ponds. The limits of production of this food unit are established in correlation with the maximum pond surface which can be used routinely in mariculture. [NOT CONTROLLED OCR]