Fry Pan Fetus!

[EastmanEggs]

Yikes!

I never want to see a fetus/partially developed yolk in my frying pan, who can answer the following:

1. How far can a fertile egg develop at room temperature of 75 degrees, and how quickly?

2. Does refridgeration delay, damage, kill a fetilized egg's development? (I hear people refridgerate, then warm to room temp before incubation!)

3. Will a fert egg develop in my fridge to a noticable point at time of cooking, to say after 2 weeks refridgeration I crack over frying pan- what comes out?

I have an active rooster who is friendly with all the ladies. Assume eggs are collected daily and put into each scenario immediately.

 

[junebuggena]

It will not develop at all if kept at 75 degrees. A refrigerated will not develop either. A fertile egg must be kept at a constant 99.5 to 102 degrees for over 48 hours for development to begin. An egg will not spontaneously start developing.

 

[numzldr]

You have no worries. I have had fertile eggs since day 1 n never had nothing growing. Unless it's incubated by a broody hen setting on the egg 24/7 it's not gonna develop

 

[AmyLynn2374]

Yikes!

I never want to see a fetus/partially developed yolk in my frying pan, who can answer the following:

1. How far can a fertile egg develop at room temperature of 75 degrees, and how quickly?

2. Does refridgeration delay, damage, kill a fetilized egg's development? (I hear people refridgerate, then warm to room temp before incubation!)

3. Will a fert egg develop in my fridge to a noticable point at time of cooking, to say after 2 weeks refridgeration I crack over frying pan- what comes out?

I have an active rooster who is friendly with all the ladies. Assume eggs are collected daily and put into each scenario immediately.

Chicken egg development can occur at irregular rates at 80F(internal temp, not outside air temp). For normal development you need 99-102 (depending on source).
Yes, people do have some degree of success hatching eggs that have been refrigerated first and yes they need to be brought up to room temp before going in the incubator. I myself as a trial last year put in 2 fridge eggs with my hatch. Unfortunetly I did not check air cells before adding them until a couple days later and found one of the two had very wonky air cells. I would have chosen a different egg had I checked first. With that being said, the wonky air cell egg did start developing but quite the first week. The other egg developed perfectly and was viable at lockdown, but failed to make a pip and was DIS. Many others have incubated and hatched perfectly healthy chicks from previously refrigerated eggs. I do not, however, know how hatch rate compares to normal incubation processes.
A fertilized egg will NOT develop in the fridge. Unless the egg had prior incubation before being refridgerated it will look like an average egg.

 

[AmyLynn2374]

CARE OF EGGS PRIOR TO INCUBATION
The hatchability of eggs can be severely reduced by improper care prior to incubation. Since it may not be practical for you to put the eggs in an incubator as soon as you get them, protect them from extreme variations in temperature. Ideally, eggs should not be more than 7 days old when they are set (placed in incubator). Beyond that point, hatchability declines.
If it is necessary to hold the eggs before you set them, turn them daily and keep them in a room where the temperature is around 50o F (10 C) and the relative humidity is 70 to 80 percent. The vegetable section of your refrigerator could be used for holding the egg until it is time to place them in the incubator. Temperatures below 40o F (4 C) reduce hatchability. Under no circumstances should the eggs be held at room temperature, because temperatures of this level are detrimental to hatchability. Embryos will begin develop at subnormal rates when the temperature reaches about 80o F (27 C)

http://chickscope.beckman.uiuc.edu/resources/egg_to_chick/procedures.html

My last hatch, I personally stored my eggs at room temp BUT no higher than 70F and had (100% fertility) 21 went in, one was pulled day 5 with bloodring 20 went on to lockdown and 20 hatched healthy and happy with no after hatch mortality. All eggs were laid that week and layers were pullets that had been laying 4-6 weeks at time of collection.

 

[EastmanEggs]

I found this answer in another forum on BYC.
Posted incase another viewer needs answer too.

Please, everyone, don't confuse a fertile egg with an incubated one. In mammals who live-bear (like humans), once the egg is fertilized, it begins to develop (we don't lay our eggs outside our bodies but "incubate" in utero).
In chickens, a fertile egg will never have a blastocyst begin to divide cells and grow into an embryo until it is incubated either by a broody hen or an incubator. Even tropical places can not maintain 99 degrees temps long enough to have a fertile chicken egg start developing an embryo. You don't have to refrigerate to stop development. Development won't start until incubation then you can candle to check fertility.
You can only get anything resembling a chicken embryo in your frying pan if you steal the egg from a broody hen (which is pretty hard without getting pecked) or taking an egg out of your incubator to eat it (kind of gross unless you like belut)
Maybe this new interest in homesteading type skills will encourage people to pay attention in science class. Or not.