1. The age-related decline in
broiler breeder male fertility
Excellent levels of fertility
(above 95%) can be achieved at
the beginning of the reproductive
period of breeder flocks (30-40
weeks of age), but fertility rapidly
declines after 40-45 weeks of age
(poor persistence). Beyond 65-70
weeks of age the fertility values
are too low from an economical
standpoint and the flock is
usually sold.