Color genetics thread.

[Chicken5555]

Can I have this one?

 

[Wappoke]

I want to create a hybrid chicken that has 2 copies of the blue egg gene, and 2 copies of a co-dominant trait from the white laying breed that I've selected for this project.
I plan on using my Ameraucana (plus a few more that I'll be getting soon) and a white egg laying breed (sorry, but I'm not telling you what it is) to do this. To complicate things, the Ameraucana does not have the gene I want from the other breed and the other breed does not carry blue egg genes.

This project will partly be for teaching my kids how genetic expression works, but it is also so that I can create a unique EE variety that breeds true for those two traits.

in summary, the traits I'm breeding for are:
2 copies of the blue egg gene,
2 copies of the (mystery) co-dominant gene

Now to the question (It's about time I hear you saying)... how many generations do you think will take to accomplish my goal?

Do you really mean codominant or do you mean incompletely dominant- there is a big difference.

 

[Chicken5555]

You know what, @Wappoke I think you're right - incomplete dominant is the right term. It's been years since I studied with my husband and I've been out of the practice of using genetic terminology. Thank you for the correction! I'll go back and edit my original post.

 

[Puddin Fluff]

Can I have this one?

I've got too many boys so some will have to go. If you were close I'd love to work something out!

 

[Wappoke]

You know what, @Wappoke I think you're right - incomplete dominant is the right term. It's been years since I studied with my husband and I've been out of the practice of using genetic terminology. Thank you for the correction! I'll go back and edit my original post.

If the bird is white, I will go with dominant white and white leghorn.

 

[Chicken5555]

Okay, okay. I didn't think people would be that interested, so I'll spill the beans. My goal is to create a fully crested blue egg layer. Not like cream legbars that have tiny crests (no insult intended), but the full crests of Polish Crested chickens. Plumage color will not be important right away. The two features I want to put together are the full crest and blue eggs that are homozygous for the blue gene.

 

[junebuggena]

Okay, okay. I didn't think people would be that interested, so I'll spill the beans. My goal is to create a fully crested blue egg layer. Not like cream legbars that have tiny crests (no insult intended), but the full crests of Polish Crested chickens. Plumage color will not be important right away. The two features I want to put together are the full crest and blue eggs that are homozygous for the blue gene.

Shouldn't be too hard. About 3 to 5 generations is all it would take.

 

[morbius18]

I have a double barred Golden Cuckoo Marans that I bred to an easter egger hen of unknown genetics. I was expecting all barred offspring, but ended up with a black copper looking rooster. What could cause this?

Rooster:

Hen:

Offspring:

I know that my rooster is sex link double barred as 100% of his offspring with a black copper marans hen are barred. But not with this hen though.

These are the other offspring from the above pairing:

 

[junebuggena]

I have a double barred Golden Cuckoo Marans that I bred to an easter egger hen of unknown genetics. I was expecting all barred offspring, but ended up with a black copper looking rooster. What could cause this?

Rooster:


Hen:


Offspring:


I know that my rooster is sex link double barred as 100% of his offspring with a black copper marans hen are barred. But not with this hen though.

These are the other offspring from the above pairing:

I think a different rooster mated her to produce that bird in particular. It is possible for a hen to be fertilized by multiple roosters.

 

[morbius18]

I think a different rooster mated her to produce that bird in particular. It is possible for a hen to be fertilized by multiple roosters.

I have no other mature roosters in that pen, just other juvenile golden cuckoo marans. The other breeding pen has the Golden cuckoo's son. The only thing that I breed are Golden Cuckoo marans and Golden Cuckoo olive eggers.

This is my other rooster, the double barred one's son. He is single barred:

That's my two roosters. The other ones pictured have been butchered a few months ago. I kerp the young cockerals together and not with my hens.