A livestock feeder having a plurality of polymeric panels interconnectable with one another to define a hay retaining space. Each polymeric panel has a first vertical end member, a second vertical end member, and a plurality of horizontal retainer members extending between the first vertical end member and the second vertical end member. The first vertical end member has at least one angularly disposed mortise, and the second vertical end member has at least one angularly disposed tenon. The tenons of the second vertical end member are slidably receivable in the mortises of the first vertical end member of an adjacent like polymeric panel so as to support the adjacent like polymeric panels in an angular relationship to one another.
