The management of the effluents produced in swine confinement is variable depending on the amount of wash water used. These buildings are generally characterized by the production of manure , which are collected under slotted floors ( slats ) prefabricated concrete or plastic, provided for in the entire area of ​​box or possibly in the more narrow area that occupies the strip of defecation as in the halls of gestation , the effluents are captured below the surface of seats of animals being transferred to manholes and then treatment plant in our case biogas , bioenergy and bio-fertilizers produced