HŠ d.o.o.also manage game breeding sites, where different game species are bred in line with legal acts and professional principles. The sole purpose of such farms stems from the need to accelerate and support the natural development of game population by bringing game bred in this way into some of the hunting grounds, as well as to bring in selectively bred pieces that will transfer their characteristics onto the game in areas that are in danger of degenerative changes due to impossibility of migration and due to interference among related  animals.