PURPOSE: A fermenter for fodder is provided to be able to check the dehydrated state of water by detecting the amount of water evaporation during the operation on a real time basis.CONSTITUTION: A drum(20) is installed inside a main body(10). An inlet part(40) supplies materials to the drum. A supply part(60) supplies drying wind to the drum. A vent(70) ventilates the drying wind in the drum to outside. A load cell(100) senses the weight of the supplied materials and changes in the weight due to the evaporation of moisture in the drying process. A controller(200) shows dryness of the material by displaying the value detected by the load cell, and sets the manual of the load cell. A discharge pipe(600) discharges washing water from the lower side of an isolation booth. A suction blower(700) connected to the vent ventilates the drying wind. A filter(800) connected to the suction blower removes bad smells, foreign substances, or bacteria in the discharged drying wind. An auxiliary filter(800`) filters substances unfiltered from the filter one more time. A pump(810) supplies liquid materials containing microorganisms into the filter. The supply part is equipped with a discharge blower(900a) for compulsorily supplying the drying wind of the room temperature. A heater(900b) is equipped in the supply part, and heats up the supplied drying wind.COPYRIGHT KIPO 2013본 발명은 음식물 쓰레기와 같은 재료를 이용하여 가축의 사료를 생산하기 위한 발효기에 관한 것으로서, 구체적으로는 본체의 하부에 설치되어 무게의 변화를 감지하는 로드 셀 및 상기 로드 셀에 의해 감지된 값을 표시하는 컨트롤러를 포함하여 구성됨에 따라, 재료와 함께 공급되는 수분의 증발량을 감지하여 건조 상태를 쉽게 확인할 수 있도록 한 사료용 발효기를 제공하게 된다.