Really porous eggs - anyone know what causes them?

Discussion in 'Incubating & Hatching Eggs' started by gritsar, Jan 26, 2011.

  1. gritsar

    gritsar Cows, Chooks & Impys - OH MY!

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    In candling eggs (from both my broody - her first batch, not current one - and in the bator), I have encountered a few really porous eggs, similiar to what's shown in silkiechicken's pics here:

    https://www.backyardchickens.com/forum/viewtopic.php?id=261876

    Anyone know what causes eggs to be really porous and thus, not hatchable?
     
  2. HelenaJean

    HelenaJean Out Of The Brooder

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    i think it's pretty closely related to calcium in the diet. though, i do have an elderly white hen who still lays, but they're usually shelless, porous, have a stretchmark around the middle of half of it has a shel to soin that touching it cracks it. She has the same diet as my other girls, so i assume it can also be related to age.
    I don't definitively know, all i really can say for sure is they're not much fun to get [​IMG]
     
  3. gritsar

    gritsar Cows, Chooks & Impys - OH MY!

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    Quote:Thanks. My girls do have oyster shell in their coop, in addition to the calcium in the layer feed. They are not quite 3 years old, so I dunno. [​IMG]
     
  4. HelenaJean

    HelenaJean Out Of The Brooder

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    that's about how old my poor laying hen is, poor old thing just can't get it right! lol, the eggs are fine to eat, just not for babies which is sad [​IMG]
     
  5. gritsar

    gritsar Cows, Chooks & Impys - OH MY!

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    Thanks for your reply. [​IMG]
     
  6. ranchhand

    ranchhand Rest in Peace 1956-2011

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    It's from being stared at too much. Honest to goodness, it is.
     
  7. debilorrah

    debilorrah The Great Guru of Yap Premium Member

    Quote:[​IMG]

    99.9% of my eggs have nice hard, firm shells. I have one white leghorn that lays VERY pourous eggs. They are not delicate so to speak, but you can feel how pourous they are in your hands.
     
  8. gryeyes

    gryeyes Covered in Pet Hair & Feathers

    It's so odd, because you can't tell the eggs are porous until you candle 'em. Look perfectly fine in normal light.
     
  9. debilorrah

    debilorrah The Great Guru of Yap Premium Member

    Quote:Gosh not mine. This one hens eggs feel like they have been rolled in sand. Candling them is something to see.
     
  10. gritsar

    gritsar Cows, Chooks & Impys - OH MY!

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    Quote:Yeah that. Not all the brahmas eggs, just some of em.
    Linda, stand by for an urgent PM.
     

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