Eggs were incubated at an average eggshell temperature of 37.8 °C and an average relative humidity of 55.7%. Eggs were not disinfected, and lines were distributed randomly within the incubator. Eggs were placed in hatching baskets on embryonic day 18, and cardboard was placed on the ...
In Experiment I, eggs were collected daily from the 24th life week and marked with group number and date and placed to the incubator once a week. Every week 20–20 eggs were applied for molecular biological examinations. The incubation was made the regular way (37.5 °C and 60% humidity)...