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Incubation Temp for sex

Discussion in 'Incubating & Hatching Eggs' started by ctzdavis, Feb 16, 2013.

  1. ctzdavis

    ctzdavis New Egg

    Feb 16, 2013
    Hello all, I am new to this forum. My son wishes to incubate eggs this year. I have heard that you can determine the sex of you hatchlings by changing the temp of your incubator. Simply put a slightly lower temp may produce hens and a higher temp may produce roosters, vice versus. I am not sure on this. Any help would be great.
  2. sumi

    sumi Égalité Staff Member

    Jun 28, 2011
    Rep of Ireland

    That, unfortunately, doesn't work with chicken eggs! It works with crocodile eggs, though. Lower temps produce more females and higher temps more males. My DH told me about this and I did some research on the internet. It's true. With chicken eggs lower temperatures causes the eggs too hatch later and higher temperatures causes them to hatch sooner. There's a great article here on incubating and hatching chicken eggs that you may find helpful:


    Best of luck with your hatch!
  3. ctzdavis

    ctzdavis New Egg

    Feb 16, 2013
    Ok we are down to the last 3 days of incubation. Hoping all goes well.
  4. ozexpat

    ozexpat CocoBeach Farm

    lower temp kills more roosters so hen percentage is higher

    good luck.post results and pics

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