Fertile for how long?

[K-Chick]

I just saw my roo do his job. How long will the hen have fertile eggs? Will just the next day egg be fertile?

 

[Chef]

They can be fertile for as long as two weeks maybe more, but this depends on if the roo is fertile.

 

[Wynette]

Actually, she an lay fertile eggs up to 3 weeks. I always separate out my breeders (if they've been put with other stock) for a minimum of a month, just to make sure.