To provide a feed supplying device capable of keeping good hygiene by determining the stickiness of the feed.

This feed stickiness determining device comprises a tubular chute or a grooved chute having a first end part and a second end part positioned at a lower part of the first end part. A contact determining means determines the moment when a specific amount of feed is brought into contact with a first region of the tubular chute or the grooved chute. A separation determining means determines the moment when the specific amount of feed is separated from a second region separated from the first region of the tubular chute of the grooved chute. A period determining means determines a period between the moment of the contact and the moment of the separation.