NOVELTY - Fodder fermentation device comprises a gas exhaust port (112), a sample reduction inlet port (114), a fermentation tank (110), a hopper portion (120), and cross hair wings. The sample reduction unit and the inlet port are formed in an upper end of the fermentation tank. The hopper portion is integrally formed in a lower end of the fermentation tank. A discharge screw (130) is mounted on a lower end of the hopper portion. A gate apparatus is arranged in the lower end of the fermentation tank. A compost of the fermentation tank is supplied, to the hopper portion, through the gate apparatus.    USE - The fodder fermentation device is useful for producing a fertilizer from a livestock excretion such as fowl droppings, pig ordure and cow dung. No biological data given.    ADVANTAGE - The tower type device efficiently produces the fertilizer from the livestock excretion without agitation.    DETAILED DESCRIPTION - Fodder fermentation device comprises a gas exhaust port (112), a sample reduction inlet port (114), a fermentation tank (110), a hopper portion (120), and cross hair wings. The sample reduction unit and the inlet port are formed in an upper end of the fermentation tank. The hopper portion is integrally formed in a lower end of the fermentation tank. A discharge screw (130) is mounted on a lower end of the hopper portion. A gate apparatus is arranged in the lower end of the fermentation tank. The fermentation tank is maintained at a state, where a space of the hopper portion is vacant and the gate apparatus is opened. A compost of the fermentation tank is supplied, to the hopper portion, through the gate apparatus. The gate apparatus has a motor to deliver the compost, through a belt, to a rotary shaft of the cross hair wings while ejecting the compost by a discharge screw through a vent. The cross wings are: arranged for rotating and supplying the compost; and positioned in an upper portion of the hopper portion.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic front view of a fodder fermentation device.    Fermentation tank (110)    Gas exhaust port (112)    Inlet port (114)    Hopper portion (120)    Discharge screw. (130)