Grain of naked oat, phylum STH 296, and husked oat, variety Bielik was compared. The grain of naked oat contained more total protein (by 41g/kg d.m.) and ether extract than husked oat grain at the same content of carbohydrate. Silmuntaneusly, in the grain of husked oat there was less crude fibre (by 83 g/kg d.m.) what was the result of small amounts of lignin (12,4 g/kg d.m.) and cellulose (19,3 g/kg d.m.). Due to this composition husked oat has the highest value of metabolic energy (from all the grains) for pigs (ME 17,4 MJ/kg d.m.) and poultry (MEN 15,6 MJ/kg d.m.), what makes it comparable to corn grain.