Octavio Villanueva Sánchez

INTRODUCTIONIn recent years, interest in the welfare of hens has been increasing. The public and activist groups than by scientific evidence have influenced much of current European legislation on the welfare of laying hens more. These groups proposed that the European Union abolish the cage housing system by the enriched cage system (750 cm2 of surface per bird); where the hens also have perches ...