No abstract

High production of broiler meat depends on various factors, such as genetics, environmental conditions, nutrition, incubation process, etc. As a result, adequate keeping of broiler breeders and frequent analysis of hatchability results seem to be key factors for efficient production of high quality chicks.A significant impact of females' age on morphology and quality of eggs on reproductive performance were proved and described in many scientific publications *Work finsnced from DanHatch Poland S.A. and statutory activity.