Cornish Lacing genetics

Alex_Zurago

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May 6, 2021
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Ive been doing some reading for a friend on Cornish lacing genetics. As I understand it Dark Cornish are double laced, but Jubilees are red with the Columbia gene and the white lace Gene. My friend wants to produce silver laced Cornish like his Wyandottes and the way he proposed was crossing the Dark with Jubilee to get a Dark Cornish with the restrictor gene for single lacing, and the black lace gene. Then breeding those genes into a white Cornish. Would this work?
 

RoostersAreAwesome

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I know that I was wondering if it would produce a similar effect to a silver lace. A single black laced white or would the color and pattern come out different, was mainly looking for a way to get a white base color with black single lacing
Recessive white can only make something pure white. One copy of the gene doesn’t do anything, while two copies makes a bird solid white. The only way to get black laced white is by using silver.
 

RoostersAreAwesome

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ok. I would presume no one has ever bred that gene into a cornish so Ill let my friend know
I don’t believe any commonly available cornish variety has silver. However, your friend could try using another breed for silver, such as silver laced wyandottes, silver double laced barnevelders, light brahmas, silver sebrights, etc. Here’s a thread about project silver laced cornish (this breeder used wyandottes): https://www.backyardchickens.com/threads/silver-laced-cornish-bantam-project.1065071/.
 

Alex_Zurago

Chirping
May 6, 2021
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I don’t believe any commonly available cornish variety has silver. However, your friend could try using another breed for silver, such as silver laced wyandottes, silver double laced barnevelders, light brahmas, silver sebrights, etc. Here’s a thread about project silver laced cornish (this breeder used wyandottes): https://www.backyardchickens.com/threads/silver-laced-cornish-bantam-project.1065071/.
Well he raises a number of Cornish and he wants to get a new color variety introduced into the standard. Ive seen conflicting information as to what color and pattern genes the Jubilees have, they look single laced but I want to be certain. He has also mentioned using the Buff Cornish which he has some of which are quite rare but he has ones but they have bad confirmation.
 

Feathercrazie

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Jun 3, 2021
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Well he raises a number of Cornish and he wants to get a new color variety introduced into the standard. Ive seen conflicting information as to what color and pattern genes the Jubilees have, they look single laced but I want to be certain. He has also mentioned using the Buff Cornish which he has some of which are quite rare but he has ones but they have bad confirmation.
Jubilee Cornish are supposed to be double laced, just like a Dark only with the black reduced by two copies of dominant white. Because of the hen's similarity to White-laced Red they have been bred as WLR and almost went extinct. The roo has white everywhere the Dark is black, thus white neck and tail. WLR has red neck and tail single-laced with white.

He might try Silver-laced Wyandot for a cross to introduce silver into Blue-laced Red, since they are supposed to be single-laced and carry the black gene. They have a different type comb and will make the offspring have a walnut comb, but this is a better option than a single comb, which is recessive and very hard to eliminate. Also the Wyandot body type would be less difficult to overcome than any of the other breeds that I can think of. He would need to use the Wyandot roo since the silver gene is sex linked on the male chromosome.
 

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