“In harmony with nature – cow-calf system” is an eco-centre for young cattle fattening, located in the Nature Park Kopački Rit. Young cattle fattening is based on strict regulations of production in a protected natural environment. The aim of the centre is to preserve natural resources, to reduce pollution of soil, water and air, as well as to preserve and support biological diversity. In the eco-centre, the company breeds Hereford cattle and Slavonian Syrmian Podolian cattle, a protected breed that is bred there in order to be saved from extinction.