PURPOSE: A fermenter for fodder is provided to accomplish fermentation while heating and evaporating the moisture even in deep inside of the drum by using microwaves.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 microwave oscillating apparatus(200) is connected and installed to the drum in the state of covering a partitioning plate. A housing(210) is formed with the broad front area and narrow rear area in order to uniformly propagate microwaves into the drum. An oscillator(220) is connected to the rear upper part of the housing, and generates the microwaves. A supply pipe(500) supplies the washing water to the upper part of an isolation booth. A discharging pipe discharges washing water from the lower part of the isolation booth. A suction blower(700) is connected to the vent, and discharges the drying wind. A filter(800) removes bad smells, foreign substances, or bacteria in the discharged drying wind. An ejecting blower(900a) is connected to the supply part, and supplies the drying wind. A heater(900b) is installed at the supply part exterior.COPYRIGHT KIPO 2013본 발명은 음식물 쓰레기와 같은 재료를 이용하여 가축의 사료를 생산하기 위한 발효기에 관한 것으로서, 구체적으로는 드럼의 일 지점에 관통구를 형성하고, 상기 관통구를 커버하면서 상기 마이크로 웨이브가 통과하도록 형성된 구획판 및 상기 구획판을 커버하는 상태로 상기 드럼에 결합 설치되는 마이크로 웨이브 발진장치를 포함하여 구성됨에 따라, 드럼 내부 깊숙이 있는 재료의 수분까지 가열 및 증발시키면서 발효가 이루어지는 사료용 발효기를 제공하게 된다.