Performing a break-out of unhatched eggs

摘要

Fertility, which is determined on the breeder farm and is completely independent of what takes place in the hatchery, represents the initial potential of a batch of eggs to produce chicks. Once an embryo forms, it either continues to develop, or it dies. The rate of embryo mortality varies, depending on general conditions such as the age, nutrition and health status of the breeder flock, and the quality of egg handling and incubation. It also varies according to the phase of embryo development.