How long before MY Roo's "Boys" take over?

[paulandashia]

I have brought home a friend's hen to be "covered" by my BCM rooster.
She lays blue eggs, and she wanted to breed them together, so the chicks would lay Olive-Green.
My friend has a few roosters that cover her girls, but before we start gathering the eggs of the hen in question, I need to know a DEFFINITE answer.
Since she has bred with different Roo's already, how long will it take for the other rooster's "Boys" to be out of her system.?
I mean, how long do I wait to gather her eggs for hatching, and be 100% certain that the Sperm that fertilized the egg IS from MY roo?

(I hope that made sense!)

 

[Ridgerunner]

The question makes perfect sense. Once a rooster and hen have mated, the average hen stays fertile for about 2 weeks. Since that is an average, it means about half the hens stay fertile for more than two weeks. Many breeders use a three week minimum but there have been a few cases of hen's remaining fertile for even longer. Not many, but a few. If you want to be absolutely sure, wait 4 weeks. If you wait three weeks you will be pretty sure but not 100% absolutely sure.

 

[paulandashia]

4 weeks. Thank you SO much. I will wait 4 weeks.