Chicken Genetics

Discussion in 'General breed discussions & FAQ' started by BC Gal, Sep 5, 2010.

  1. BC Gal

    BC Gal In the Brooder

    Aug 8, 2010
    I brought this discussion from the Wyandotte thread:

    BC Gal wrote:
    Another question - with humans, recessive genetic traits are why we can't marry our relatives; do chicken genes carry rare deformities, etc. in the recessive gene?

    McSpin wrote:
    Yes, all animals have the potential to carry recessive genes that control undesirable traits. When breeding "close", more homologous pairs of genes are formed. Many deleterious traits are recessive, but so are many desirable traits. So, when the genes are doubled-up, we see the traits. We can select for them or against them. This means that by using inbreeding along with the right selection technique, you can select against the undesired traits and even eliminated them from the line. At the same time we are more likely to "fix" desirable traits.

    With humans, we don't practice selective breeding, so we shouldn't procreate with relatives. With animals, we can test cross, out-cross, inbreed and line breed at will - and all with the same animals as one of the parents. The immune system will eventually become compromised with extended inbreeding, but no other undesired trait will remain in the line if you actively breed against it with the proper crosses. All breeds of domestic animals including strictly ornamental types, were created with a certain amount of inbreeding. Indiscriminate inbreeding is never a good thing, but purposeful inbreeding in the hands of the knowledgeable person can do amazing things.


    Thanks Steve [​IMG] I don't know if you have seen the show ReGenesis, but they had an episode on families in the Maritimes (Canada) that had a weird illness pop up in a bunch of families and it turned out that may of the people in that region never moved and basically distant inbreeding happened and caused the disease that the children had (it was an interesting show).

    Anyways, back to chickens [​IMG] Because of inbreeding, do some breeds die out? I have been looking into the tolbunt polish and wonder if this is a sustainable breed. It seems that many who use to breed them no longer do. Apparently there is some genetic problems, though I don't know anymore about it.

  2. blackdotte

    blackdotte Songster

    Nov 18, 2008
    All chickens are the same species. What we call breeds are only birds that have been selected for characteristics we have wanted.
    If the selected genome is compiled all existing, past and future breeds can be re-generated/made, as long as the genes are still in existence somewhere in the chicken genotype.
    Polish are a type of chicken, Tolbunt is a colour.
    Polish chickens exist.
    Tolbunt is a combination of single lacing (the Pattern gene/Columbian/Melanotic combination) with the addition of Mottling. All these genes are common in fowl.
  3. Sir Birdaholic

    Sir Birdaholic Night Knight

    [​IMG] Does this mean I can't pick up my cousins at the family reunions? [​IMG] [​IMG] [​IMG]
  4. ninjascrub69

    ninjascrub69 Songster

    Aug 13, 2010
    Bloomingdale, MI
  5. jeb251

    jeb251 Songster

    Mar 24, 2009
    Fort Wayne
    Quote:yea your from Arkansas it ok to do it there
    I think its actually expected lol
    Last edited: Sep 5, 2010

  6. Sir Birdaholic

    Sir Birdaholic Night Knight

    Whew! thars some cutie pies a commin'.

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