A multiplexing apparatus selectively performs cell discard processing in the case of congestion on the basis of a use state of the same connection formed by cells from the side of a switching unit and subscribers without installing UPC units, and the multiplexing apparatus, which is connected to the switching unit and each of the plural subscribers through communication lines. Increased gains are particularly improved when zeranol is administered in an immediate-release and controlled-release formulation which allows for a one-time dosage injection. The stage is transferred perpendicular to an optical axis, and image information is sequentially obtained for each low-magnification section. A significant time reduction can be achieved by preprinting the image to a transfer sheet prior to transferring the image to a CD. The wire chopper module also incorporates a flywheel to increase the movement of inertia of the rotating cutting inserts as an aid in overcoming jams. The apparatus is comprised of at least one longitudinal and one cross-strut built into the boat, a hitch for connection to a towing vehicle, and two laterally mounted wheel suspensions, with wheels.