What genotype is this?

[Sonoran Silkies]

So what would I look for to tell me whether he is e^b or e+? Thanks!

 

[blackdotte]

You can't tell just by looking. Mate him to some known eb hens, such as Partridge or Gold Laced Wyandottes, and look at the hatch down of the chicks. If he is e+ you will ger wild type and if eb you will get brown down chicks.
David

 

[tadkerson]

I am going to have to respectfully disagree with David's analysis of the bird. I believe the bird to be extended black (E/?), mottled (mo/mo) exchequer type , mahogany (Mh/?), melanotic (Ml/ml+) and gold (s+/s+). I believe he is carrying autosomal red.

1. The bird is carrying one copy of extended black because of the following:

the beak is almost black in color
white primaries in the wing
mahogany has not effect upon the breast coloration, if he were wild type or brown and carried mahogany he would show some red in his breast.
no color in the secondary flight feathers ( wing bay) , he does not have a duck wing; this would make the bird birchen or extended black
Heterozygous extended black birds leak gold or silver.


2. I do not believe he is heterozygous (split) at the S locus, I believe he is homozygous gold (s+/s+)

I do not see the effects of silver in the bird only gold. He should have some buff in his hackle feathers if he carries silver.
The white color in the bird is due to the expression of the mottling genes.

3. The amount of dark red on his back and wings indicates a combination of autosomal red and mahogany.

The red in his neck hackles and saddle hackles is due to the gold genes.

4. I believe him to be heterozygous at the melanotic locus (Ml/ml+) because he is leaking red through out the pyle zone.


Tim

 

[Sonoran Silkies]

He appears to have one copy of Fm--checking skin under wings, by vent and on neck it is light purpley-slate. Right at the vent I can see a little pink skin. His foot bottoms are mostly dark: about 1/3 of one pad and the outer 1/3 to 1/2 of all toes are pink, the rest is as dark as the legs.

Also, his hackles and saddle feathers appear to be laced, or at least have very heavy shafting that extends beyond the shaft itself. But none of the remainder of his feathering that I can tell.

Does that change either of y'all's analyses?

David Tim
e+ or e^b E/?
S/s+ s+/s+
mo/mo mo/mo
Mh/? Mh/?
Ml/ml+

 

[tadkerson]

The fibromelanotic plus sex linked dermal melanin would explain the dark color in the legs. After I posted earlier ( way too early in the morning) , I could not figure out why he had black legs and carried two mottling genes. The fibromelanotic explains the dark legs.

Tim

 

[wclawrence]

I know this thread is kinda old, but this bird is interesting to me. I noticed the combination of genes that seemed impossible. Without Fm. But I hatch a lot of Fm chicks, so far only heterozygotes. You can see the Fm in his face a little. That is the way Het. roosters are if they are not gypsy faced to go along with it.
Anyways, I have found a few more things interesting about this bird. Unless the camera was a little off color, he also appears to me to have some kind of eumelanin inhibitor. Either Dun or Blue. And the comb. Yeah it looks like a pea/straight split, but it is so smooth. I have seen very few birds with a comb exactly like that.
To the person who started this thread: Can you tell us anything about how this bird is bred?
Thanks!