Transporting Unit (1) for live poultry on board a truck comprising a supporting frame (2) and a plurality of drawer-type cages (3) having a lateral wall (6) without aeration openings and intended to be selectively positioned at one side (2a) or the opposite side (2b) of the supporting frame (2), depending on the climatic and environmental transport conditions. The drawer-type cages (3) are arranged in a single pile or in two adjacent piles, and in both cases the arrangement is such to be able to occupy the entire width of the loading deck of a truck.