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Has anyone tried storing hatching eggs at 40° for more females?

Discussion in 'Incubating & Hatching Eggs' started by Bantu, Jan 10, 2017.

  1. Bantu

    Bantu Chillin' With My Peeps

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  2. red horse ranch

    red horse ranch Chillin' With My Peeps

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    It's an interesting article. I have never tried it but sometimes when I'm collecting hatching eggs in the winter the eggs are pretty cold when I bring them in. I have tried lowering the incubator temperature for the first few days to see if I get more females. But I couldn't see where it made a difference. What I have noticed is that in the winter and early spring I get more males but in the summer I have a higher percentage of females. And I have noticed that some of my hens will only produce males where some hens have mostly female chicks.

    I've been hatching for years and I still haven't figured out a way to get more girls. So I buy a lot of females at the feed store. [​IMG]
     
  3. aart

    aart Chicken Juggler! Premium Member

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    I'll call click bait on FED.

    I think if it were true, the hatcheries would have caught on long ago.

    The article/study they cited was published in 1960,
    no numbers of eggs in the study were given,
    and.....
    "However, storage at 40°F produced significantly more pullets than cockerels, 54.6 per cent. of the chickens being pullets."
    ......4.6% is not 'significant' in my book, but within the normal range of gender ratio.
     

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