Breeder age to determine incubation settings

Eggs from breeder flocks of different ages, have a difference in composition. As a result, embryonic energy utilisation and heat production are different. This is worth taking into account to optimise incubation settings, thus achieving high hatchery ?performances and good chick quality. By Ampai Nangsuay, Bas Kemp and Henry van den Brand, Wageningen University, the Netherlands, Ron Meijerhof, Poultry Performance Plus, the Netherlands, Yuwares Ruangpanit, Kasetsart University, Thailand