Temperature inside eggs during incubation

[SweetieChicken234]

I was reading a guide from Cobb Vantress about raising their broiler chicks. It was talking about how their broilers have a hotter temperature inside the egg during incubation and you need to factor that into hatching. Too much heat will give a poor hatch. This is large scale operation... nothing like what our little home incubators do. Does anyone know about what the temperature will be inside our heritage breed eggs for example if our home incubator temperature is at about 100 degrees F? Like how much hotter per degree will a heritage egg be inside? This really isn't important for a production point of view I'm just overly curious.

 

[Debbie292d]

See @casportpony's post here that might help. https://www.backyardchickens.com/th...cubator-testers-journey.1632452/post-28376370

 

[SweetieChicken234]

See @casportpony's post here that might help. https://www.backyardchickens.com/th...cubator-testers-journey.1632452/post-28376370

Close. I only saw Turkeys and Ducks temperature logged.

 

[Ridgerunner]

Two different thoughts on this. One might affect us the other probably not.

The egg material is denser than air so it will heat up at a different rate than air temperature. The longer the temperature stays constant the closer the interior temperature will be. Our thermostats work by turning the heat on when the thermostat cools off to a certain point and then turn off when the temperature reaches a certain point. Different incubators cycle differently. At least some of that depends on where the thermostat is placed in the incubator relative to the heat source. In most incubators we buy this is usually not a big deal but it can have an effect in homemade incubators.

During embryo growth the chick generates heat. The later in incubation the more heat it generates. The commercial incubators hold a massive amount of eggs: 60,000 to some even 120,000. Later in incubation this can create enough heat to cook the chicks in the shell. This is one reason the big commercial operations usually lay the eggs flat during lockdown. It's easier to blow air over them to cool them down instead of heating them up. We don't have this problem.

we generally do not have these issues. And that's why we talk about an average incubating temperature.

 

[SweetieChicken234]

The part I found most interesting that I wanted to compare is that Cobb Vantress says their meat broilers produce more embryonic heat. I did some searching and found this. They have higher metabolic rate.

I was just curious what exactly the difference was between their broilers and a regular heritage embryo(like a Delaware). How much heat are we talking in difference that a broiler embryo produces?

 

[Ridgerunner]

How much heat are we talking in difference that a broiler embryo produces?

I have no idea.

 

[Debbie292d]

Close. I only saw Turkeys and Ducks temperature logged.

It was the article she attached I thought could help. Any breed could be considered. To try to find differences between internal temps of different breeds, I don't know. Good luck!

 

[SweetieChicken234]

It was the article she attached I thought could help. Any breed could be considered.

When I find some extra cash I am going to order that thermometer and check my own eggs to see what they are. This has really got my mind wondering what the difference is.