The influence of a long-term storage of hatching eggs of the Peking duck up to 4 weeks with periodic warming to the hatching rate and development of the animals was tested. 19.027 eggs were stored for up to 4 weeks with and without periodic heating at 10-12o C and 80-95% humidity. The heating to 37.8 ° C took place on the 3rd storage day for 3 hours and then every 3 days for 2 hours. 1.949 animals were tested for fattening and slaughter performance. The periodic heating of duck hatching eggs during storage allows a prolongation of the storage period of up to three weeks, without the breeding results being permanently impaired. When stored for up to 4 weeks, the hatching rate also decreases significantly with periodic warming, but is well above the hatching rate of non-heat treated eggs. Duck growth, feed efficiency and carcass quality are positively affected by the heat treatment of hatching eggs.