Hobby Breeding — Steps involved to create Barred Ameraucanas?

[nicalandia]

I have a barred rooster with dark slate legs! Didn’t realize it was special, he’s the product of a sex link cross between an AC cock and BR hen I’ll go get a pic rn!

Ayam Cemani have Fibromelanotic that will turn the shanks and some conecting tissues Slate/Blue/Black, I have seen Silkie/BR crosses with same dark shanks. Why is so hard to get blue/slate shanks on barred? That's because the sex linked barring and sex linked dermal inhibitor are linked to each other and the chance of crossing over and getting a B - id+ recombinant(Barred with slate shank) is very low

 

[Nigel27]

Cuckoos don’t have the same yellow shank connection eh? I have some pink legged orange cuckoos and a really cool mulberry combed cuckoo

 

[nicalandia]

Cuckoos don’t have the same yellow shank connection eh? I have some pink legged orange cuckoos and a really cool mulberry combed cuckoo

Cuckoo and Barring are basically the same except barring has a cleaner look, but knowing the multiple allelic mutations on the sex linked barring allele, it may actually be an allelic mutation, but its just as closely linked to Id as regular barring is

 

[DarJones]

The linkage is that barring requires sex linked barring which is on the w/z chromosomes and is linked to yellow leg also on w/z. Here is a very quick intro to poultry genetics that can help. https://poultry.extension.org/articles/poultry-anatomy/poultry-genetics-an-introduction/

Another way to look at this is that barring is from a combination of the barring gene with one of the slow feathering mutants. Cuckoo is just barring sans slow feathering.

I need to take a close look at my Silver Laced Wyandottes. I'm fairly sure I have yellow legged birds with slow feathering. It is an interesting conundrum, can barring - which inhibits skin pigment - be combined with yellow leg

 

[nicalandia]

I need to take a close look at my Silver Laced Wyandottes. I'm fairly sure I have yellow legged birds with slow feathering. It is an interesting conundrum, can barring - which inhibits skin pigment - be combined with yellow leg

I don't see why not. Recessive yellow w and dominant White skin W+ are Autosomal, the Barring - Dermal Inhibitor have no effect on the actual skin color, just the Dermal and epidermal melanin

Barred Rock have yellow skin and Cuckoo Maran have white skin

 

[NatJ]

It is an interesting conundrum, can barring - which inhibits skin pigment - be combined with yellow leg

I'm not sure which genes you are referring to when you say "yellow" legs.

Are you distinguishing yellow skin vs. white? That locus is not on the sex chromosome, so you can easily have either skin color paired with barring.

Or are you distinguishing light skin (caused by Id, the Inhibitor of dermal melanin) vs. dark skin (id+)? Light would be yellow or white, dark would be green or slate. Id is on the sex chromosome, and is closely linked to the barring locus, so the people trying to breed Barred Ameraucanas with slate legs will keep having trouble unless or until they get a crossover.

Or are you referring to the dark or black color that tends to appear on the legs of birds with E (Extended Black)? That shows up in Barred Rocks, and also Black Australorps and Black Jersey Giants and so forth.

Barring can certainly be found with yellow legs in Cream Legbars and Rhodebars. Both of those would have B (Barring) linked with Id (Inhibitor of dermal melanin) on the Z chromosome, w (not-white skin = yellow), and something that is not E (Extended Black) at the e locus.

 

[Finnie]

Why is so hard to get blue/slate shanks on barred? That's because the sex linked barring and sex linked dermal inhibitor are linked to each other and the chance of crossing over and getting a B - id+ recombinant(Barred with slate shank) is very low

Id is on the sex chromosome, and is closely linked to the barring locus, so the people trying to breed Barred Ameraucanas with slate legs will keep having trouble unless or until they get a crossover.

Do either of you know what the percent chance of getting a crossover between the barring gene and the Id gene is?

 

[nicalandia]

Do either of you know what the percent chance of getting a crossover between the barring gene and the Id gene is?

about 7 percent to get B - id+ recombinant

 

[Finnie]

about 7 percent to get B - id+ recombinant

Oh, that’s higher than I was expecting. I worked with cinnamon and ino in budgies, which they say is 3.4% chance of crossover. 7% ought to be doable if it’s not too hard for a chicken breeder to keep lots of males for test breeding. Which is probably most people’s limiting factor. Plus there are so many other traits to breed for, that focusing on shank color might set some of the other traits back.

 

[cluckingheck]

View attachment 2639114
I guess I got an unexpected start to my little ‘project’. Unfortunately, this little guy’s dad is my black ameraucana ( surprised he was able to sire any offspring, he’s the low man in the pecking order lol ) over my barred rock hen, so this little guy is a sexlink which is something I was told to avoid doing.

Anywho, the chick actually has pale legs with black splotches instead of an actual yellow. So, my BR hen might actually be a cuckoo maran or a mix? I don’t know when I’ll start this in earnest, though. I got rid of my barred rock rooster I had planned on using because I have too many roosters in general ( started with 6 and now I’m down to 3 ). However, the guy I sold him to is local and all of the chickens he has came from me anyways. Might have to do a rent-a-cock type thing.

I ended up giving this guy away not long after taking this picture, but I asked them to send me a picture of what he looks like now. They named him Barry and, thankfully, he has his dad’s personality. He’s a lot bigger than what I was expecting, because he was one of the smaller cockerels.

Anyways, sorry for the sudden revival of this, I just remembered it. Since I last posted, I’ve added a heritage barred rock and some blue ameraucana pullets. I did order a blue ameraucana cockerel, but he didn’t survive long after I brought him home ( infected navel that I didn’t noticed until too late ). As much as I love my current rooster, I think he’s a very sneaky EE. Messed up pea comb & has red leakage that grew in as he aged.