Chocolate Gene

[Krys109uk]

In chickens, what color results from the sex-linked recessive brown on extended black? Does anyone know? I think I read somewhere that double brown dilution in chickens is called khaki, the same as in ducks (although khaki is specific to dusky in ducks, wild type with d/d is nutmeg).

There are two different genes you are talking about. The recessive sex linked dilution gene, chocolate (choc), is the gene of the chocolate orpingtons & wyandottes as found by Dr Clive Carefoot.
And the autosomal incompletely dominant dilution gene, dun (I^D), where the colour is called chocolate when heterozygous & khaki when homozygous.​

 

[Sonoran Silkies]

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And to be even more confusing is sometimes called fawn...but I have never been able to get a good handle on the differences between fawn and khaki or chocolate. I have seen it listed with a different E-allele and also as both hom and het.

 

[Chickensrock10110]

Hey, that isn't too bad at all! I expected the total importation fee's etc..to be at least $50,000 to $75,000,that is my budget.

I guess the hard part is finding a person willing to get them overseas.

I don't think it will be an more difficult to import in to Hawaii than any other state.

From my understanding, I just need a CVI with a couple tests done and an import permit to ENTER Hawaii.

BUT, to enter the US and be passed on to me, they will need to under go a 30 day mandatory quarantine in one of the three animal quarantine centers.They will also require permit and CVI to enter the US.

I will ask our Ag dept for more info.

I do not plan to smuggle eggs.I don't think that any of them would even hatch......

pips&peeps :

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They are pretty spendy over in the UK still. You are looking at putting out quite a bit of money to import them. I would estimate $5,000.00 to $8,000.00.

Hawaii has very strict importation laws, you would have to contact your Dept of Ag about it. I think it would be quite difficult to near impossible in HI.

But the best thing to do is find out the regulations and go from there.

I wouldn't try to smuggle anything into the US either as there are people out there watching........​

 

[DANNY]

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Where did you get the chocolate coloring from?

I bought the chocolate old english and bred the chocolate gene into a cochin.

 

[DANNY]

I also forgot to mention I have white crested chocolate polish also.

 

[CityChicker]

Is the chocolate in OE really chocolate or dun?

 

[pips&peeps]

dun

 

[CityChicker]

Quote:
There are two different genes you are talking about. The recessive sex linked dilution gene, chocolate (choc), is the gene of the chocolate orpingtons & wyandottes as found by Dr Clive Carefoot.
And the autosomal incompletely dominant dilution gene, dun (I^D), where the colour is called chocolate when heterozygous & khaki when homozygous.

Okay, I see. It is a little different in ducks. The sex-linked recessive (d/d) is the same gene that creates the color Chocolate (in the presence of extended black) and also Khaki (in the presence of dusky mallard) and Nutmeg (in wild type). There is not a separate gene, choc, in ducks (at least not identified as such).

I just wondered if the same color "Chocolate" in ducks could be recreated in chickens by breeding Khaki to Extended Black. Obviously, from what you are saying it would not be true chocolate (choc). Are the darker Dun birds (they seem to vary in color) I^D and extended black? Is that even possible in chickens?

 

[onthespot]

post a pic of your chocolate Polish! (if you would, please)

 

[Krys109uk]

I just wondered if the same color "Chocolate" in ducks could be recreated in chickens by breeding Khaki to Extended Black. Obviously, from what you are saying it would not be true chocolate (choc). Are the darker Dun birds (they seem to vary in color) I^D and extended black? Is that even possible in chickens?

Neither choc nor I^D work the same as d in ducks as they only affect eumelanin.
It is said by some (I haven't had a chance to experiment) that I^D/i+ gives a more of a rich chocolate colour in the presence of reddening genes, but as some are 'default' or wild type genes, I'm not sure how much difference it would make.
I gather, with I^D, there variability of expression but as it is, like Bl, incompletely dominant it doesn't seem surprising.​