Question about turning eggs

Discussion in 'Incubating & Hatching Eggs' started by henney penny, Feb 21, 2016.

  1. henney penny

    henney penny Songster

    Nov 21, 2009
    Northern Maine
    Was wondering why do we stop turning eggs at day 18 in the incubator when the hen turns them till they hatch??Just wondering

  2. Egghead_Jr

    Egghead_Jr Crowing

    Oct 16, 2010
    NEK, VT
    Actually broody hens stop turning eggs once they feel them moving. I was even under the impression they don't leave the nest at all at that point. Never noticed one out of coop last day or so of a hatch but could be wrong.

    With our imitation of this we stop turning prior to hatching also. What's been learned through experimentation as much as by repeatable accidents is we can stop turning at day 14 or 15 without ill effect on hatching rates. With auto turners there can be ill effect allowing it to continue turning as the chicks are popping out.

    What I take home from this is we generally up the humidity day 18 or 19 in preparation of hatching. We do it a bit early as some times they hatch early and want the humidity up. We also want to take out the turner at some point. Might as well do it all at once and lets have a rule of thumb day to do these things. Day 18 works well for that. I do it before bed day 18 or early day 19.
    Brooke215 likes this.
  3. Oiseauii

    Oiseauii Chirping

    Jun 8, 2015
    Lincoln, Nebraska
    I've also read that we stop turning so the chick can get into proper pipping position.
  4. AmyLynn2374

    AmyLynn2374 Humidity Queen

    Oct 11, 2014
    Gouverneur, NY
    I stop turning at the end of day 13 because the Cobb development charts says that day 14 ish is when chicks make their turn toward the air cell end. Eggs do not need to be turned after two weeks because they can move themselves and there is no danger of "sticking" to the side causing development problems. My last hatch (20 chicks) I had zero upside malepositioned chicks. I didn't have a problem over all with malepositioned, but it wasn't common to have at least one per hatch. I feel that the less turning at time of the chick turning can only help them complete that process.

    I believe that people generally choose day 18 because this is "lockdown" for a majority and the greater emphasis on hands off and not opening the bator, limits the ability to turn after lockdown. So, everything is done at that time. I myself don't subscribe to the hands off theory, but I do raise my humidity at day 18.
    Brooke215 likes this.

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