A collaborative R&D project participated by Faculty of Engineering of the University of Porto (FEUP) and the University of Minho is underway for developing solutions for reducing the production costs of meat, as well as solutions for converting animal waste into valuable products, including biofuels. According to professor and head researcher, Manuel Fonseca Almeida, there are three forms of waste recovery currently being tested by the team of researchers from FEUP and the University of Minho: medical biomaterials from animal bones, biogas and organic fertilizers. The FEUP is targeting the project on the production of biomaterials from animal bones for bone regeneration in humans, FEUP Professor Manuel Fonseca Almedia says that some of the animal bones can be used as biomaterials for human bone regeneration, "for example cattle bones as the tibia". The University of Minho team, on the other hand, is focusing on non-bone waste materials. "The constituents of protein products (e.g., leftover meat, greaves and rind), by anaerobic digestion can produce biogas". The residue after anaerobic digestion can be used as organic fertilizers..