Abstract: A vehicle has an upwardly opening bed mounted thereon within which manure can be stored. A manure spreader device is located at the trailing end of the vehicle, and a conveyor means moves manure from the interior of the bed into contact with the spreader device, whereupon the manure is uniformly spread over the terrain in the usual manner.A plurality of heated panels are attached to the underside of the floor of the bed. Each heated panel includes electrical heating elements therein which are arranged so that the floor of the bed is heated to a temperature which prevents the manure from freezing thereto.The panels are individually affixed to the floor of the bed in such a manner that they can be replaced.