Changing a Dark Cornish line into white

CNJ

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Oct 12, 2020
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I was wondering if any one tried changing a Dark Cornish line into a white Cornish line?

This is a picture of my chicks bred from my Dark Cornish rooster and recessive white Plymouth Rock hen. I noticed that all of them had pea combs, and some were on the white side.

This gave me an idea, I will breed my dominant white Breese hen and Dark Cornish rooster pair chicks to these. Hopefully, I will get some white birds with pea comb from this study and then line breed them, and select for pea comb and white feathers.


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nicalandia

Free Ranging
12 Years
Jul 16, 2009
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I was wondering if any one tried changing a Dark Cornish line into a white Cornish line?
The "All white Cornish" are Recessive White, but you could introduce the dominant white gene on it, if you keep crossing back to Dark Cornish you will end up with a Buff/Red/Orange Single Laced Type of chicken, not entirely white, unless you keep selecting for the Extended Black chicks(I suppose the white breese are extended black)


White Laced Red Cornish Bantams
cornish-bantam-type-chicken.jpg




Recessive White Standard Cornish hen
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CNJ

Songster
Oct 12, 2020
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(A) Dark Cornish Rooster + (B) White Plymouth Rock hen
(C) Dark Cornish Rooster + (D) White Breese Hen

Using whiter colored birds with pea comb for the (A/B) + (C/D) parents.

I am pretty sure there will be some white chicks from the (C/D) cross, but I am not sure if any of them will have pea comb.
 

CNJ

Songster
Oct 12, 2020
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Recessive White Standard Cornish hen
There was someone selling show quality Standard White Cornish hatching eggs on ebay, but they were expensive, something like $120 for 6 eggs for the beginning auction bid. I tried twice and failed to hatch any. I gave up after that....and started messing around with Cornish x crosses to see if I could bring back a white standard Cornish.
 

nicalandia

Free Ranging
12 Years
Jul 16, 2009
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There was someone selling show quality Standard White Cornish hatching eggs on ebay, but they were expensive, something like $120 for 6 eggs for the beginning auction bid. I tried twice and failed to hatch any. I gave up after that....and started messing around with Cornish x crosses to see if I could bring back a white standard Cornish.
You can with Extended Black and Dominant White
 

ChickenLeg

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Feb 15, 2012
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Like nica said if you cross a dark cornish over dominate white it will cover the black but all the red will still be visible. Recessive white covers all colors but it takes 2 copies to be seen. Recessive white cant be seen at all with one copy, but dominate white can be seen with 1 copy. Cheers
 

nicalandia

Free Ranging
12 Years
Jul 16, 2009
8,803
4,320
506
Stuck In a Dream
My Coop
My Coop
Like nica said if you cross a dark cornish over dominate white it will cover the black but all the red will still be visible. Recessive white covers all colors but it takes 2 copies to be seen. Recessive white cant be seen at all with one copy, but dominate white can be seen with 1 copy. Cheers
Extended Black is required for complete White(and homozygous dominant white because only one copy will result in white with black marks like paint silkies) so he would need to breed for that
 

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