wheaten silver columbian whites

[Zawisty]

Heterozygous Dominant White (on a black chicken) is used for "paint" Silkies who have lots of black blotches. It is also found in some hybrid chickens, such as California White (that are mostly white with some black dots.)

So looking for any black leakage can be a way to recognize heterozygotes. I do not know whether some heterozygotes can be pure white, or whether all heterozygotes will show some black. But just looking for the most white/least black on each chicken is probably the best way to tell them apart.

I agree that test-mating requires lots of time, labor, feed, and so forth. Your project will certainly be easier and faster if you can avoid that. But if you find that heterozygotes and homozygotes in your flock are able to look identical, it's good to be aware that this option exists.




I'm sure there is a genetic cause for this, but even without knowing what the gene is called, you can select for what you want.

You know what it looks like, and you know the Light Sussex has the right genes for this. So breeding the Sexlinks to Light Sussex, and maybe breeding daughters back to the Light Sussex rooster, would be the way to produce some chickens without red leakage. Once you have any with no red, of course you will select those ones to breed the next generation.

thank you for supporting

yes i will try breed white daughters to their father, i must hatch large number,
for the white dominant, may be fayoumi good as Ii detective

 

[NatJ]

for the white dominant, may be fayoumi good as Ii detective

Yes, that could work.

For females, you could also breed them to the Light Sussex rooster to check whether they are Ii or II. (You might want to breed them to him anyway, to decrease the amount of red in the offspring. But if you are able to track which chicks came from which hen, you can learn whether those hens are II or Ii without having to make any extra matings or produce any extra chicks.)

 

[MysteryChicken]

@Zawisty, I saw you mentioned Autosomal Red. I have this in my Silkies, Silkie crosses, & OEGBs.

I usually see it in the hackles, saddles, & shoulders. I have some examples if you'd like I can share some pictures?

 

[Zawisty]

@Zawisty, I saw you mentioned Autosomal Red. I have this in my Silkies, Silkie crosses, & OEGBs.

I usually see it in the hackles, saddles, & shoulders. I have some examples if you'd like I can share some pictures?

yes, I'd appreciate if you shared some pictures

 

[MysteryChicken]

yes, I'd appreciate if you shared some pictures

Okay.
Here's a few.

 

[Sara S]

Hello All
I had read most of the topics posted in this forums, and so interested especially about Autosomal Red,
i am working on my small falk,which consists of some Rhode islalnd reds, some red sex link hens supposed to be ISA brown, and only a light sussex rooster
i am working to produce white chickens ( homozygous for ewh, CO, dominantant white I and sliver)

i started with cross the light sussex rooster x ISA brown hens, as the rir hens have no dominant white I
i got white chick's, they are 3 weeks old now, few of them are completely white without black marks, but the others with black marks,
now the chicks are
homozygous ewh
homozygous CO
some are heterozygous mahogny Mh mh, and others are with no mahogny mh mh
pullets are S+
cockerel are Ss
the white chicks are heterozygous li (dominant white)
and the other with blacks marks have no "I"
i know now to get my goal which is white chickens of genotype
ewh^ewh
CO CO
II
SS males and S+ female
i should cross the completely whites together and the chance will be 25% homozygous dominant white, 50% heterozygous, and 25 with black tails
so the problem
how can i differentiate the whites if they are homozygous or heterozygous
the second issue, the mahogny, how can i get off the red shoulders or how to get rid of autosomal red to prevent red leakage

I love how I remember doing this in early Hs And I think I’m going to be a geneticist…. I don’t know how to fix the things you want but I’m following this and GOOD LUCK

 

[Zawisty]

Okay.
Here's a few.View attachment 2987537View attachment 2987539View attachment 2987540

cute boy,
the gold leakage obvious in the 1st picture

 

[Zawisty]

I love how I remember doing this in early Hs And I think I’m going to be a geneticist…. I don’t know how to fix the things you want but I’m following this and GOOD LUCK

2 years ago, i know nothing about poultry plumage colours and genetics,
after reading discussions in these forums, specially about sex link, i got some basics, and still reading threads

 

[MysteryChicken]

cute boy,
the gold leakage obvious in the 1st picture

Thanks.

 

[Baxterx]

Hello All
I had read most of the topics posted in this forums, and so interested especially about Autosomal Red,
i am working on my small falk,which consists of some Rhode islalnd reds, some red sex link hens supposed to be ISA brown, and only a light sussex rooster
i am working to produce white chickens ( homozygous for ewh, CO, dominantant white I and sliver)

i started with cross the light sussex rooster x ISA brown hens, as the rir hens have no dominant white I
i got white chick's, they are 3 weeks old now, few of them are completely white without black marks, but the others with black marks,
now the chicks are
homozygous ewh
homozygous CO
some are heterozygous mahogny Mh mh, and others are with no mahogny mh mh
pullets are S+
cockerel are Ss
the white chicks are heterozygous li (dominant white)
and the other with blacks marks have no "I"
i know now to get my goal which is white chickens of genotype
ewh^ewh
CO CO
II
SS males and S+ female
i should cross the completely whites together and the chance will be 25% homozygous dominant white, 50% heterozygous, and 25 with black tails
so the problem
how can i differentiate the whites if they are homozygous or heterozygous
the second issue, the mahogny, how can i get off the red shoulders or how to get rid of autosomal red to prevent red leakage

Based on a recent cross that I made I'm beginning to think either Bielefelder of Light Sussex have some kind of hidden black that is suppressed in the pure birds. I'll post if I can confirm. I can say that Light Sussex are homozygous for the autosomal red inhibitor Aph^I.

I'll post if I learn more with this year's crosses.