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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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Gallant Game
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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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