Incubation Times in the Modern Hatchery

The chicken embryo generally needs 21 days (504 h) to complete incubation, including the drying of down (Etches, 1996). In practice however, incubation periods vary considerably, as observed by Laughlin (2007) in large scale field surveys, which recorded pulling times from the setting of eggs of 500 up to 526 hours .This variation can partly