A sow feeder includes a feed storage hopper comprising an upper funnel, an intermediate feed discharging tube, and a ring fixedly secured under the feed discharging tube; a feed transport mechanism comprising a cylindrical solid post having a diameter less than inner diameters of both the ring and the feed discharging tube, and a base having a diameter greater than an outer diameter of the ring; a hollow fastening mechanism releasably secured to the post passing through the ring and the feed discharging tube; and a feed collection container releasably secured to the feed discharging tube to dispose below the base. Feed material in the feed storage hopper is adapted to discharge into the feed collection through the feed discharging tube by lifting the base.