Meat duck breeding cage frame

The utility model discloses a meat duck breeding cage frame. Including support structure, the supporting structure comprises four supporting rods. A lap joint assembly is installed on the supporting structure. The lap joint assemblies are distributed in a longitudinal array shape in the height direction of the supporting structure. Each lap joint assembly comprises two supporting plates, the supporting plates are fixedly connected to the adjacent supporting rods in the front-back direction, the two supporting plates located in the same lap joint assembly are connected with the same net cage inan inserted mode, openings are formed in the cage walls of the left side and the right side of the net cage, and conveying doors are hinged to the walls of top openings of the openings. According tothe utility model, the rotary conveying mesh belt is arranged below the mesh cage; a slag guide groove with a blade is formed in the side edge of the conveying mesh belt; solid waste residues on the conveying mesh belt are scr