How long before I get purebred eggs?

[jcopeland29710]

I hav e three breeds of chickens...Leghorns, Buff Orps, and Silver Laced Wyn. I have a rooster for each breed. Currently they are all around 10 weeks old. Once they start laying I will be interested in continuing my flock by incubating & hatching my own eggs.


So how long do I need to separate the breeds before I know that the eggs the hens are laying are going to be "pure bred" and not sex-link?

 

[jcopeland29710]

Never mind I found several answers by refining my search.....

For those that see this and want to know...It appears 4 weeks is the most definite length of time.