A method for the management of a group of production animals kept in a confined space, includes at multiple points in time during the period wherein the animals are kept in the confined space, for each individual animal of the group, the automatic identification of the animal, establishment of a position the animal takes in the confined space, determination of a physical property of the animal, and the coupled storage of data corresponding to the identification, the position and the physical property in a memory that is operatively connected to the animal, and a system for applying this method and a device for using therein.