Dark Brahma Roo X Light Brahma Hen

[BLElford]

Hi Color experts
This may be a simple answer but I can’t figure it out.
Can someone tell me the outcome of using a dark Brahma Roo to cover light, dark and buff Brahma hens. Obviously dark and dark makes dark, but unsure what the result is with dark Roo, light hen.

Thanks!!

 

[nuthatched]

http://kippenjungle.nl/Overzicht.htm
I can't get it on the work internet, but this is what I use to cheat.

 

[Amer]

Dark over light: light offspring (with some pencilled feathers leaking through.) (Genetically dark and light are called silver pencilled and silver columbian.)
Dark over buff: yellow columbian males, buff females. (with some pencilled feathers leaking through.) (Genetically, buff is known as gold columbian.)

 

[BLElford]

Dark over light: light offspring (with some pencilled feathers leaking through.) (Genetically dark and light are called silver pencilled and silver columbian.)
Dark over buff: yellow columbian males, buff females. (with some pencilled feathers leaking through.) (Genetically, buff is known as gold columbian.)

This is helpful thank you

So in the case of dark over light, both the male and female offspring would be light with some/varied penciling.

 

[Amer]

This is helpful thank you

So in the case of dark over light, both the male and female offspring would be light with some/varied penciling.

Yep

 

[Amer]

This is helpful thank you

So in the case of dark over light, both the male and female offspring would be light with some/varied penciling.

Well, the males wouldn't have pencilling but they would have more dark feathers than the usual light brahma.

 

[BLElford]

Well, the males wouldn't have pencilling but they would have more dark feathers than the usual light brahma.

Thank you!

I’m curious if you kept a rooster from that mix and bred back to a pure light Brahma hen, would it further dilute the dark to essentially give you all light offspring, or would some of the pencilling and extra dark feathers still come through in the second generation?

 

[Amer]

Thank you!

I’m curious if you kept a rooster from that mix and bred back to a pure light Brahma hen, would it further dilute the dark to essentially give you all light offspring, or would some of the pencilling and extra dark feathers still come through in the second generation?

Well, Columbian isn't a dilution gene, it's a pheomelanin extension gene.
A backcross to the mother would produce half homozygous Columbians and half heterozygous Columbians. The homozygous Columbians would have a much cleaner pattern while the heterozygous would resemble their fathers. However, since the homozygous Columbians haven't been selected for good pattern they still might have some extra black feathers.

 

[Flockking]

When you say dark roo do you mean solid black?

 

[BLElford]

When you say dark roo do you mean solid black?

No, I mean a Dark Brahma Rooster. Not black.