APPARATUS FOR PROPAGATING CRAYFISHES AND BREEDING LARVA

PURPOSE: To make a device adaptive to various weather conditions by mutually connecting a shrimp storage tub, breeding tub, incubation tub and specified growing tub through piping and linking these tubs with an oxygen supply unit through other piping. CONSTITUTION: After water supplied by a centrifugal pump 6 automatically controlled through a pressure control frequency converter 7 is passed through a filter 8 of a water treatment unit 2, the temperature of water is adjusted by a temperature adjuster 13 having a three-way control valve 12, boiler 10 and heat exchanger 11, pressure in a system is kept constant by a pressure regulator 14, oxygen is supplied by an air blower 18 and water is supplied into a breeding unit 4 and a nutrition production unit 5 for growth. Next, this water is supplied through a sand/stone bed 20 and a water permeable plate 21 into a shrimp storage tub 19 and a breeding tub 24, in which aged spawn is placed, and water flowing out of the tub 24 is passed through a spawn collector 26. On the other hand, the spawn is moved through the incubation tub 28 to a growth collecting tub 27, supplied into a growing tub 31 and grown by supplying nutrients prepared in the tub 30 having an artificial illuminating means 31.