At what age does this animal reach reproductive maturity?

about 2 and half years of age.

hens start laying eggs at about 4 to 6 months of age. this means they can start reproduction then. As for turkeys, I don't know. But two and a half years is when most hens used for production begin to decrease the amount of eggs they lay. Roosters, once they hit puberty, are viable unless sick or dead.