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What determines males or females in hatching eggs?

Discussion in 'Managing Your Flock' started by sticks22, Aug 29, 2008.

  1. sticks22

    sticks22 Chillin' With My Peeps

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    What determines the sex of chicks, temputures or is there something else?
     
  2. scooter147

    scooter147 Chillin' With My Peeps

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    Determined just like most creatures, luck of the draw!
     
  3. ravenfeathers

    ravenfeathers Chillin' With My Peeps

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    genetics. in some reptiles, environmental conditions will determine gender, but not in birds.
     
  4. patandchickens

    patandchickens Flock Mistress

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    Chromosomes. Like in humans.

    Except that in humans, it is males who carry 2 different chromosomes (XY) while females carry two copies of the same one(XX), so that it is whichever one is in a particular sperm cell that determines the sex of a particular offspring.

    Whereas in chickens, it is the female who carries the 2 different chromosomes (ZW) while the male carries two copies of the same (ZZ) so it is effectively the HEN whose reproductive cell (ovum) determines each chick's sex.

    You may be thinking of certain reptiles, such as crocodiles and alligators, where sex of the offspring is determined by what temperature an egg is incubated at. T'aint that way in chickens.

    Pat
     
  5. Mrs MIA

    Mrs MIA Chick Magnet

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    Whoa... I just learned something new! LOL!
    Thanks Pat!
     
  6. Bluedog420

    Bluedog420 Chillin' With My Peeps

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    If the egg's are rounded on the end it will be a pullet....pointed egg's are roo's
     
  7. Mrs MIA

    Mrs MIA Chick Magnet

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    If that were the case, I should have a LOT more pullets than I do... [​IMG]
     
  8. speckledhen

    speckledhen Intentional Solitude Premium Member

    Quote:Nope, no way. Every yolk already has the sex of the chick programmed into it, even before it's fertilized. Boy, if that was the case about the rounded/pointed, then Lexie wouldnt be throwing mostly cockerels lately.
     
  9. goldensunriseranch

    goldensunriseranch Chillin' With My Peeps

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    I agree the egg shape has to do with how the hen is built/shaped in the area where the soft egg shell hardens before being laid. Nothing to do with the gender. You just can't tell from the outside of an egg.
     
  10. EweSheep

    EweSheep Flock Mistress

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    In humans and horses, its a known fact that its the male that determined the sex of the offspring. I am not sure if it applies to roosters.
     

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