Blue egg genetics question

[Altairsky]

I'm pretty sure the mother was not a pure araucana (at some point, she got mixed with a faverolles) but the father was supposed to be pure.

 

[NatJ]

That’s crazy! If she came out of a blue egg the mom must have been Bb and if she lays a pink egg then the dad must have also been Bb! Which is strange for an Araucana - I believe they are supposed to be BB. Pink is still a pretty egg though!

Araucanas are supposed to have two blue egg genes, but obviously some of them don't.

B is commonly used as the symbol for the barring gene, not the blue egg gene. The blue egg gene is O for "oocyanin" (the name of the pigment that makes the egg blue.) I think it comes from Latin, and pretty much means "egg blue" (cyan = blue)

So if a pullet lays not-blue eggs, her father could be Oo or oo but not OO. Since he does not lay eggs, there is no way to be sure the father has even one O gene, unless you know about his genetics some way (from his daughters, or knowing that one of his parents was OO, or doing a genetics test.)

 

[Slothinc]

Araucanas are supposed to have two blue egg genes, but obviously some of them don't.

B is commonly used as the symbol for the barring gene, not the blue egg gene. The blue egg gene is O for "oocyanin" (the name of the pigment that makes the egg blue.) I think it comes from Latin, and pretty much means "egg blue" (cyan = blue)

So if a pullet lays not-blue eggs, her father could be Oo or oo but not OO. Since he does not lay eggs, there is no way to be sure the father has even one O gene, unless you know about his genetics some way (from his daughters, or knowing that one of his parents was OO, or doing a genetics test.)

Thank you so much for the info! I need to learn the correct letters to signify each gene. I will try to remember that the blue egg gene is an O!

 

[Altairsky]

I have a theory that the araucanas bred by my friend come from France. I guess that specific bloodline was in the past mixed with faverolles maybe to improve the beard (beards are OK for our standard). And in the process, they messed up the egg color.

 

[NatJ]

I have a theory that the araucanas bred by my friend come from France. I guess that specific bloodline was in the past mixed with faverolles maybe to improve the beard (beards are OK for our standard). And in the process, they messed up the egg color.

That theory makes sense to me. I can't say whether it is correct or not, just that such a thing could happen.

 

[Altairsky]

That theory makes sense to me. I can't say whether it is correct or not, just that such a thing could happen.

He breeds golden duckwing rumpless araucanas. He lives close to the French border. He gave me a bunch of eggs to try my incubator and this bird came out of a blue egg:
Basically a faverolles with an ugly looking tail and green legs. She lays pink eggs like normal faverolles.

Her sister is a golden duckwing, she came out of a blue egg but she lays green. I kept her because she had a tail therefore I couldn't sell her.

I plan to breed easter eggers so I don't care about raising defective araucanas, though I would have appreciated if they laid the same blue eggs they came out from. I didn't expect their father to be Oo since he was a nice looking araucana boy with no obvious defects.

 

[NatJ]

He breeds golden duckwing rumpless araucanas. He lives close to the French border. He gave me a bunch of eggs to try my incubator and this bird came out of a blue egg:View attachment 4007180
Basically a faverolles with an ugly looking tail and green legs. She lays pink eggs like normal faverolles.

Her sister is a golden duckwing, she came out of a blue egg but she lays green. I kept her because she had a tail therefore I couldn't sell her.
View attachment 4007183
I plan to breed easter eggers so I don't care about raising defective araucanas, though I would have appreciated if they laid the same blue eggs they came out from. I didn't expect their father to be Oo since he was a nice looking araucana boy with no obvious defects.

I see why you think Faverolles got mixed in!