Prefabricated module (1) suitable to modularly constitute a flooring covering a slurry collection tank and/or an outflow channel of slurry of a stable for cattle, having an upper floor face (11) treadable by the livestock. The module comprises a support element (2) in concrete and a plurality of tiles (5) housed in it. Each tile (5) has a shape complementary to the respective tile housing (25) on the support element (2) and has at least one hole (50) suitable to allow the flow of cattle slurry. The module (1) has an upper floor face (11) that is at least 50% occupied by the set of upper tile faces (51).
