A handling system for transport units (10) of live poultry in a slaughterhouse, comprising an inlet station (1) of the transport units (10), a transfer line (3) to receive drawer-like cages (15) extracted from the supporting frames (11) of the transport units (10), and an extraction device (5) configured to simultaneously extract two stacks of superimposed drawer-like cages (15) from the supporting frames (11). Between the inlet station (1) and the transfer line (3) a rigid receiving structure (6) of the two stacks of drawer-like cages (15) is interposed, vertically displaceable between a position of simultaneous receipt of the two stacks of extracted drawer-like cages (15) and a separate depositing position of the drawer-like cages (15) of each stack onto the transfer line (3).
