Humidity and air sac

Discussion in 'Incubating & Hatching Eggs' started by yotetrapper, May 16, 2008.

  1. yotetrapper

    yotetrapper Songster

    May 3, 2007
    North Central MS
    Does the humidity affect the air sac in an egg? I read something on a posted that sounded as if it does. If so, in what way?
  2. wilds of pa

    wilds of pa Songster

    As the egg ages the air sack gets bigger with less hum, more hum can slow THAT down so the eggs doesnt lose moister so fast, and it keepS the air sack smaller.

    Hope that makes sense to you..

  3. Peeps

    Peeps In the Brooder

    May 12, 2008
    I might be wrong, but I thought I read somewhere if the humidity is too high, the air sac get water in it and the chick can drown when it tries to hatch. I am going to be hatching for the first time next week. I am setting the eggs monday or tuesday, so I have been reading up on hatching all week.
  4. Matt A NC

    Matt A NC Crowing

    Feb 22, 2007
    Morganton, NC
    An egg needs to loose a certain amount of moisture during incubation. As it does so the Air cell increases. 3 days before hatch the Air Cell should take up 1/4 to 1/3 of the egg. That gives the chick a good size area to pip into and get a breath before pipping the shell, but still be a very good size to hatch.

    If incubated too dry the air cell will be larger and the chick may be too small to hatch properly.

    If incubated with too high a humidity the air cell will stay small. This makes it more difficult for the chick to pip into the air cell before hatching. Even high humity and the chick can be sticky and won't dry properly if it is able to hatch at all. Way to much humidity can accumilate in the air cell and fill it with fluid. So, when the chick pips into the aircell for it's first breath, it drowns.

  5. Guitartists

    Guitartists Resistance is futile

    Mar 21, 2008
    I have some d'uccle eggs that I am worried about as their air cells seem rather large [​IMG] They are in there and moving around, so I will just have to wait and see.
  6. yotetrapper

    yotetrapper Songster

    May 3, 2007
    North Central MS
    Mine seem to be small. And on three eggs, I dont see the air sac at ALL anymore. I am on day 18.
  7. Vamp-A-Billy Princess

    Vamp-A-Billy Princess Songster

    Apr 13, 2008
    what kind of incubator do you have? If the humidity is too high they'll drown which sounds awful. I had an LG and used the dry hatch method and had a perfect hatch. So some had air sacs and now they don't?! That doesn't sound good.
  8. yotetrapper

    yotetrapper Songster

    May 3, 2007
    North Central MS
    Hovabator still air. My hydrometer has read in the forties the entire time. Only been adding a couple of tablespoons every 5 days or so.

    I'm about to go candle here in a bit, then take out the turner. I'll report back when I'm done, with pictures!
  9. fowlwoman1

    fowlwoman1 Songster

    Mar 29, 2008
    Wenatchee, WA
    no air cell at day 18 sounds like rotten eggs to me
  10. yotetrapper

    yotetrapper Songster

    May 3, 2007
    North Central MS
    I'm sorry, I must have candled them wrong. I just did before moving them out of turner, and they're all fine with air sacs, see my other post!

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