Antlers are unique bones and are very characteristic secondary sexual organs of cervids males. Rapid growth of its can cause physiological exhaustion and seasonal osteoporosis. Antlers develop with the age of the male, which is also related to his physiological and psychological ability to reproduce. Males of fallow deer reaches sexual maturity in its second year of life, only males over 5 years of age usually participate in reproduction, but most often stags aged 7 years and older. For this reason, the aim of the study was to analyze the mechanical properties of antlers of farmed fallow deer in relation to their age. For this purpose first time, 31 dry antlers from farmed fallow deer stags (living in the same farm conditions) were tested mechanically, in four age groups.