1. Nidera (1) for piglets, comprising at least one module (2； 2 ') to form together with the walls (3, 4) of a compartment of a cochinera a carrier for piglets, the module comprising a sidewall ( 5)； a portion of cover (6), rigidly connected to the side wall； and a part of mobile cover (7), a visor, hinged with respect to the fixed cover portion, wherein the cover portion is fixed downward to the bottom of the cabin formado.2. Nidera (1) according to claim 1, wherein the part of cover (6) is provided on the side opposite the side wall (5) of the module (2, 2 ') of a C-profile side (8) suitable for receiving the fitting upper edge (9) of a wall (4) of side closure compartment, so that the module is capable of being installed adjustable in said compartment for supporting the lower edge (5a) of the side wall (5 ) and the profile (8) of the module on the floor (10) and said wall (4) side, respectively, cochinera.3 compartment closure. Nidera (1) according to the preceding claim, characterized in that the C-profile (8) extends towards the front of the module (2, 2 '), and is provided with a lateral seat (11) for the stable support of a lateral edge (12) of the movable cover (7) where it takes a cerrada.4 position. Nidera (1) according to any one of the preceding claims, wherein the movable cover (7) is provided on its lower surface (7a) of a series of reinforcing ribs (13) oriented longitudinally towards the bottom of the cabin, lacking reinforcing ribs transversales.5. Nidera (1) according to any one of claims 2 to 4, wherein the movable cover (7) is provided with a perimetric flap (14) facing downwards, which extends along its circumference except lateral edge (12) rests on the C-profile (8) 0.6. Nidera (1) according to any one of claims 2 to 5, characterized in that it comprises two modules (2, 2 ') symmetrical and joined together along the profile C.7. Nidera (1) according to the preceding claim, characterized in that the side walls (5) and part of cover (6) of two m
