Sex- linked Information

Discussion in 'General breed discussions & FAQ' started by tadkerson, Oct 27, 2009.

  1. LAFreewayChickens

    LAFreewayChickens Chillin' With My Peeps

    You could get a females that were hetrozygous for columbian if you bred a barred rock roo to a columbian rock hen. The BR should carry extended black right? Would the columbian rock carry wheaten? If so, you'd have the females you need.

    If your purpose is to recreate the Delaware, you would want to start with rocks that were excellent in the qualities you want in your dels, or you'll just end up recreating poor quality dels.

    I suspect there is still enough diversity out there in the Delaware gene pool that it would be much easier to breed good Dels from existing stock than to start over, But then sometimes it is fun and educational not to do things the easy way...
     
  2. nicalandia

    nicalandia Overrun With Chickens

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    chicks from a Barred Rock mated to Columbian rock will carry Heterozygous Columbian(Co/co+) but the F1s will not be Columbain Restricted as Co/co+ has little effect on Extended black. they would look like black sexlinks except with silver leaking instead of gold.

    the Columbian Rocks carry eb(brown) not eWh(Wheaten).




    Quote: Delaware┬┤s Utility traits are similar to Utility NH. instead of Barred Rock. so if he wants to Recreate Delawares I would say he needs to infuse Utility NH blood. the only genes from the Barred rock need it are dominant sex linked Silver(S) and sex linked Barring(B). Wheaten(eWh), Columbian(Co) and Utility traits from NH
     
  3. Arielle

    Arielle Chicken Obsessed

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    A very pretty pale olive--more of a green egg.


    Kathy IMO is breeding Dels--she is a couple generations into the project. Maybe she can give you the formula.
     
  4. tadkerson

    tadkerson Chillin' With My Peeps

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    In columbian birds you will have to check the birds down color to determine if the bird is brown or wheaten.

    Most columbian rocks carry wheaten ( the chicks will have wheaten down) while some columbian carry the brown allele and will produce chicks with some variation of a grayish/black back and the barred rock should be extended black. Columbian wyandotte are usually brown at the E locus and have the black back down color-but you will see some that are wheaten.

    I agree- if a person wants a superior bird it is best to start with at least one superior bird in a cross.

    Tim
     
  5. nicalandia

    nicalandia Overrun With Chickens

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    after taking a closer look at the Columbian Rock birds I do agree most of them are wheaten based, while most columbian wyandottes are brown(eb) based..

    Tim the extra eumelanin on their saddle(on columbian wyandottes) is due to eb right?

    here is a light sussex(wheaten columbian) rooster with no visible saddle eumelanin(on the right) and a columbian Wyandotte with visible saddle eumelanin

    [​IMG]
     
  6. chickeneyfoot

    chickeneyfoot Chillin' With My Peeps

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    HELP! HAS ANYONE EVER crossed a silver laced wyandotte hen with a rhode island red roo?? Have pics of the cross?? please help!
     
  7. RWise

    RWise Chillin' With My Peeps

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    I hatched some eggs I got from my Sister, her hen lays a jumbo+ size egg (a Barred Rock). Her Rooster is a RIR, and black sex links are expected, and indeed 2 of 3 certainly look the part. 1 with the distinct white spot, now barring, 1 without and remains black, however the 3rd is not black and looks like the female chick in Illustration 2 of post 1. The third one is the one I do not understand, why is it not black like its siblings? I do not know where she got her stock.

    And from my flock, I had 2 Roosters, a Red Ameraucana and a Buff Orpington. I did not know the BO would do this, I wanted buff and black barred. Which one is the daddy to my Barred Rock chicks, I do see the rose comb on a few, and those have green legs that makes them Reds. But some have no green on their legs and single comb, (as dose momma) could this mean they were the BO's? Could they leak the dads colors as they age?

    Hind sight is often 20 20.
     
  8. Ridgerunner

    Ridgerunner True BYC Addict

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    It means the Barred rock hen is not a pure Barred Rock. She is split Extended Black and something else. I'm not going to try to guess what that something else is.

    A Barred rock is generally Silver, which is a sex linked gene. SInce the chick is red, there is an excellent chance it is a pullet.
     
  9. tadkerson

    tadkerson Chillin' With My Peeps

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    I have not made the cross but you are going to get chicks that are more difficult to sex. Look at the chicks in illustration # 2 on the first post.
     
  10. tadkerson

    tadkerson Chillin' With My Peeps

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    Ridge Runner is correct.The barred rock is most likely carrying birchen and the extended black gene. I have produced chicks that were birchen/wheaten that had a down pattern similar to the chicks in the illustration. It could also be wheaten and any other E locus allele also. Most probable is birchen. Wheaten in the chicks would come from the RIR rooster.

    The second part of your question. Easter eggers (ameraucanas are not red) have pea combs not rose combs. If the BO crossed with a barred rock hen, then the chicks should be black with buff faces.

    Tim
     

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