What day do the embryos start generating their own heat?

[seventreesfarm]

I'm on day 11 and my stats went from 99.1 and 44% this morning to 99.7 and 30% just 8 hours later. Everything is usually fairly stable, so it seems odd.

-Joanna

 

[Marty1876]

Temps vary highly, even 8 hours you'll lose lots of humity. My temps read a bit differnt almost every visit. As long as they stay 99-100, I'm good.

Its not about the embryos.

 

[seventreesfarm]

Like I said, my temp and humidity has been pretty stable.

So...does anyone know about when the embryos start generating their own heat?
I've found a few mentions online that they do, but not when :/

 

[ChickyBangBang]

Chickens begin creating their own heat from the moment of fertilization and yes, it does affect the temperature inside the incubator. However, to what degree is based on too many variables that are all different with every single hatch - so you'd never be able to put a blanket statement on how it affects the incubator's temp.

I don't want to get in trouble for citing all sorts of info that isn't mine - it's in the books I read. I suggest ALL of these.

Sources:
Raising Chickens for Dummies
A.B.C. of Poultry Raising
Regarding Chickens: Essentials for the Flock Owner (DVD but I only watched half of it because my DVD/VCR combo kicked the bucket)
A Guide To Better Hatching it's an "okay" book but not my favorite.
Keep Chickens! Tending Small Flocks in Cities, Suburbs, and Other Small Spaces - hilarious book (I use this one when I need to laugh because all the other more important books stressed me out)

 

[seventreesfarm]

Thanks Chicky. I thought there was a certain point where the chicks were more in charge of their internal thermostat, but like you say, lots of variables. I read something about them being able to cope with a power loss later in the incubation cycle because of generating their own heat. Guess that all depends...