To prevent the yolk or embryo from settling at the bottom of the egg and sticking to the shell membrane, the farmer keeps the eggs in special trays in which they are turned automatically, or he has the eggs turned every day by hand.
Lai dzeltenums vai dīglis nenosēstos olas apakšā un nepieliptu pie zemčaulas apvalka, fermeris ievieto olas īpašos paliktņos, kuros tās automātiski tiek apgrozītas, vai arī parūpējas, lai tās katru dienu tiktu apgrieztas ar rokām.