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PostPosted: Sun Aug 18, 2013 12:57 pm 
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Hi Dizzy,
How did they turn out?

I keep coming back to this thread when trying to understand the genetics of the chicks hatched. Now its coming up to breeding season I thought it might be useful to read again.

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PostPosted: Mon Aug 19, 2013 11:49 pm 
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Dapper Duck
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Hi redjohanna,
Thanks for the reminder it made me go and take some pics today.
Below are the blue and black Australorps at 6 weeks old. There is a pair of each(plus one younger blue cockerel who had a really light head) and the only difference I can see now between the light headed and more normal darker ones are the the lighter beaks. I don't know if these will colour up as they get older or stay white. Some of both the light and dark ones had or have some juvenile mottling.
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The Silver Laced Wyandotte chicks turned out to be a SLW pullet and two poorly laced Blue Laced Silver cockerals.
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Richard


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PostPosted: Tue Aug 20, 2013 7:00 am 
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Thanks Richard
It helps when you can see the finished product!

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 Post subject: Re: Chick down colour:
PostPosted: Thu Apr 30, 2020 4:41 am 
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Hatchling
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I know this is a very old thread but was wondering how e+/e+ Co/Co Db/Db chicks would look and also eb/eb Co/Co Db/Db. Thanks!

KazJaps wrote:
The following are all e+ wild type based, varying in eumelanin (black) restrictors (Co, Db).

1. Wild type
e+/e+
Image

----------------
2. Wild type with Columbian gene Co
bottom chick - e+/e+ Co/Co (top chick - e+/e+ co+/co+)
Image

---------------
3. Wild type with Dark Brown gene Db
e+/e+ Db/Db
Image
---------------
-Co on e+ wild type tends to darken back, etc down, but sometimes dorsal stripes are still partially visible.

-Db lightens e+ phaeomelanin down and widens dorsal stripes.

Photo 2 - Co chick is Millefleur, i.e. also has mo mottling gene (e+/e+ mo/mo Co/Co), but this mo gene generally doesn't change chick down colour/pattern with e+ Co chicks.

Photo 3 - Db chick may also have Pg (Pattern). This Pattern gene might in combination with Db change patterning of down some.
======================================
The following are Wheaten:

4. Wheaten, Sex-linked Gold (no columbian gene, ie co+/co+)
eWh s+
Image

5. Wheaten with Columbian gene, Sex-linked Gold
eWh Co s+
Image
------------------

Photo 4- Wheaten sex-linked gold co+/co+ (without Columbian) are usually cream. The Db gene doesn't change eWh chick down colour. Therefore, this chick may or may not have Db.

Photo 5- Wheaten sex-linked gold with Co gene, changes the cream chick down shade to buff.

Note, Wheaten sex-linked Silver Co chicks remain cream/white. Therefore, to use wheaten chicks in sex-linked silver/gold crosses for day-old ID of gender, it's usually necessary to have Co - columbian in the birds, as it is very hard to ID between gold & silver in wheaten chicks without Co.

-----------------------------------
* Edit - added Wheaten


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 Post subject: Re: Chick down colour:
PostPosted: Sat May 02, 2020 7:40 am 
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Junior Champion Bird
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SimoniLuVanu wrote:
I know this is a very old thread but was wondering how e+/e+ Co/Co Db/Db chicks would look and also eb/eb Co/Co Db/Db. Thanks!

KazJaps wrote:
The following are all e+ wild type based, varying in eumelanin (black) restrictors (Co, Db).

1. Wild type
e+/e+
Image

----------------
2. Wild type with Columbian gene Co
bottom chick - e+/e+ Co/Co (top chick - e+/e+ co+/co+)
Image

---------------
3. Wild type with Dark Brown gene Db
e+/e+ Db/Db
Image
---------------
-Co on e+ wild type tends to darken back, etc down, but sometimes dorsal stripes are still partially visible.

-Db lightens e+ phaeomelanin down and widens dorsal stripes.

Photo 2 - Co chick is Millefleur, i.e. also has mo mottling gene (e+/e+ mo/mo Co/Co), but this mo gene generally doesn't change chick down colour/pattern with e+ Co chicks.

Photo 3 - Db chick may also have Pg (Pattern). This Pattern gene might in combination with Db change patterning of down some.
======================================
The following are Wheaten:

4. Wheaten, Sex-linked Gold (no columbian gene, ie co+/co+)
eWh s+
Image

5. Wheaten with Columbian gene, Sex-linked Gold
eWh Co s+
Image
------------------

Photo 4- Wheaten sex-linked gold co+/co+ (without Columbian) are usually cream. The Db gene doesn't change eWh chick down colour. Therefore, this chick may or may not have Db.

Photo 5- Wheaten sex-linked gold with Co gene, changes the cream chick down shade to buff.

Note, Wheaten sex-linked Silver Co chicks remain cream/white. Therefore, to use wheaten chicks in sex-linked silver/gold crosses for day-old ID of gender, it's usually necessary to have Co - columbian in the birds, as it is very hard to ID between gold & silver in wheaten chicks without Co.

-----------------------------------
* Edit - added Wheaten


thank you for sharing this information . very interesting stuff .


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PostPosted: Sun Feb 21, 2021 12:36 pm 
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Hatchling
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I've been reading and reading about chick down. I breed Belgian d'Uccles (mille fleur, golden neck, blue mille fleur). I've noticed some interesting chick patterns, and wondered what you could tell me.
First, most of my mille fleur babies look very stereotypical with dark backs
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I get the occasional yellow mille fleur baby. These babies end up quite dark as adults. I'm assuming my babies are e+ with columbian, and the yellow ones have dark brown?
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So questions. The yellow chicks - someone told me they may be wheaten based, but reading tells me it may be the influence of Db. Is that correct? Also, occasionally in both the mille fleur and blue mille fleur, I get a black beard. What could cause that? It's rare, but it happens.
Also, I'm working on lemon mille fleur. I've got lemon sablepoots that I crossed with d'Uccles. The babies for the most part look like mille fleur d'Uccle babies. But one was quite dark with a light beard and a yellow spot on its head. And now at six weeks, he's developing a dark beard with dark feathers on his head and neck. What influences could cause that? I will put photos on the next post since I've reached my max. And thank you for any input. I've been so curious about what could cause the dark beards in some, and dark heads, necks, and beards in the mixed boy.


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PostPosted: Sun Feb 21, 2021 1:00 pm 
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Hatchling
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So here is the boy with the dark beard. He's a blue mille fleur, but I've had one mille fleur like that also.
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And this is the little sablepoot d'Uccle mix.
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These are the lemon sablepoots. Boy is the father of the mix.
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