Modern hunting must be sustainable in order to preserve biodiversity, and since game, under the Hunting Act (NN 140/05, 73/2009 and 14/2014),), is of interest to the Republic of Croatia, trophy-quality deer are natural wealth, but also an important economic resource. Basic factors, such as food and water, soil quality, vegetation, terrain configuration, peace in hunting and general suitability of hunting grounds, are important for the survival of some species of wildlife, but food and water are the most important. Regularly every year in a certain period, game suffers from lack of food, which has a negative influence on her medical condition and abundance of species. As a result of this, game is causing damage to agricultural fields. Research were carried out on agricultural land in the state open hunting area number X/11 "Suhopoljska Bilogora" in order to determine the yield of green mass, dry matter and nutritive value. The highest dry matter yield had a spring vetch cv. Jaga (4,67 t ha) in full flowering stage. The highest dry matter yield had a spring wheat cv. Lennox (9,06 t ha) in milk ripening stage. The highest content of crude protein of dry matter occurred at the stage of before flowering of spring vetch -1-1cv. Jaga (247 g kg-1). The highest content of crude protein in spring wheat of dry matter was achieved in the tillering stage wheat cv. Lennox (175 g kg). The highest yield of crude protein occurred in full blossoming stage spring vetch cv. Jaga (803 kg ha). The highest yield of crude protein was reached spring wheat cv. Lennox (1072 kg ha) -1-1-1in the anthesis stage.