This study aimed to establish the optimal storage parameters for hatching eggs from commercial broiler hybrid parents “COBB - 500” over a period of 12 days. The research was conducted on two batches of eggs, one control batch (Lc) and one experimental batch (Lexp.). For the Lc batch, the storage conditions for eggs were those practiced in most hatcheries in Romania; thus, the storage temperature of the eggs was +14°C ÷ +16°C, and the relative humidity of the air was 65-70%. In the Lexp. batch, the storage temperature of the eggs studied was reduced to +8°C ÷ +10°C, maintaining the same level of relative air humidity (65-70%). The eggs were turned every hour starting on the fourth day of storage. A Canadian-made Jamesway Multi-Stage incubator was used to incubate the eggs. The storage temperature of +8°C to +10°C ensures minimal weight loss and maintains high fertility and hatchability. The 12-day storage period under these conditions is effective for preserving hatching eggs, contributing to superior results in the incubation process.