The gradual warming of eggs in the HatchTech incubators leads to significantly better results. Inge van Roovert, head of the Research and Development team: “Trials in which eggs were warmed in two five-hour stages, from 69 to 85 °F and from 85 to 100 °F, produced 1.0% more hatched eggs averaged over all ages of breeders. And there are even more benefits.”