The present invention relates to a liquid feed supply method of a feeder for pigs, which manually supplies feed to a feeder plate located on the floor through a feed outlet of a lower part of a feed supply part of a hopper case containing feed, and automatically supplies water by installing a water supply part on an upper part of the feeder plate separately from a hopper case so as to supply liquid feed in which feed and water are mixed to pigs. According to the present invention, water is automatically supplied for a predetermined time when the height from the bottom of the liquid feed stored in the feeder plate is lower than a predetermined level. Even if pigs, when hungry, touch the feed outlet to make feed to come out of the feed outlet, water and feed stored in the feeder plate are automatically mixed to become liquid feed, the pigs continuously intake the liquid feed, and water is not supplied until the level of the stored liquid feed is lower than a predetermined level such that the pigs have no choice but to eat last feed of a liquid state, which comes out in advance. Thus, feed is not rotten since the feed cannot remain, and when the level of the liquid feed is lower than the predetermined level, a sensor senses the lowered level of the liquid feed to supply fresh water and pigs eat liquefied feed by touching the feed outlet and making fresh feed come out, which is continuously repeated such that pigs can intake much liquid feed of a fresh state. Therefore, pigs are nourished, and loss of the liquid feed is less, thereby being economical and reducing defect of a liquid feed supply device.COPYRIGHT KIPO 2020본발명은 양돈용 급이기의 액상사료 공급방법에 관한 것으로,사료가 들어 있는 호퍼 케이스의 사료공급부 하부의 사료출구를 통해 사료가 바닥에 위치한 급이기판에 수동으로 공급되며, 호퍼 케이스와 별도로 물공급부가 상기 급이기판 상부에 설치되어 자동으로 물이 공급되어, 돼지에게 사료와 물이 혼합된 액상사료를 공급하는 것으로, 본발명은 급이기판에 저장되는 액상사료의 바닥면에서부터의 높이가 일정수위보다 낮아지면, 물이 일정시간 자동으로 공급되며, 돼지가 배가 고플때 사료 출구를 건드려 사료를 출구 밖으로 나오도록 하더라도 사료급이기판에서 저장된 물과 사료가 저절로 섞이면서 액상사료가 되고 이것을 계속 섭취하여 저장되는 액상사료의 수위가 일
