The invention relates to a feeder insert (1, 1′, 1″, 1″′, 100, 100′) for use in metal casting in casting molds, comprising a feeder body (2, 2′, 2″, 2″′, 102, 102′) which delimits a feeder cavity (4, 4′, 4″, 4″′, 104, 104′) for receiving liquid metal, wherein the feeder body (2, 2′, 2″, 2″′, 102, 102′) has a first end (6, 6′, 6″, 6″′, 106, 106′) having a passage opening (8) for the liquid metal and a second end (10, 10′, 10″, 10″′, 110, 110′) opposite the first end (6, 6′, 6″, 6″′, 106, 106′), and wherein the feeder body (2, 2′, 2″, 2″′, 102, 102′) comprises a central axis (Z) extending through the passage opening (8). The feeder body (2, 2′, 2″, 2″′, 102, 102′) is separated at least one partition plane (E) extending in a direction of the central axis (Z) and is formed at least from a first feeder shell (18, 18′, 18″, 18″′, 118, 118′) and a second feeder shell (20, 20′, 20″, 20″′, 120, 120′). The first and second feeder shells (18, 18′, 18″, 18″′, 118, 118′) are connected to each other to form the feeder body (2, 2′, 2″, 2″′, 102, 102′).