Bad egg. Black inside. What happened? Gross picture

[FarmFullOfFowl]

There is a gross photo attached below- warning.

This is my first time incubating eggs and I am trying to hatch Embden geese. Of the seven I started with, I believe two are alive and moving around! Yeay! I pulled three out today at day 15 after candling. I cracked this one open to see what was wrong and it was a black mess inside. What has caused this? Is this bacterial contamination?
thank you!

 

[ladybrasa]

I’ve never cracked open an egg I thought was rotten, but this is something of what I’d imagine I’d see!! Was it stinky??

Had the eggs been wiped/washed before incubating? This can increase the chances of contaminants getting in the egg. Or maybe there was a little micro crack. Or she’ll was over porous. Or sometimes it just happens!

 

[PippinTheChicken]

usually dead eggs go black

 

[PippinTheChicken]

I’ve never cracked open an egg I thought was rotten, but this is something of what I’d imagine I’d see!! Was it stinky??

Had the eggs been wiped/washed before incubating? This can increase the chances of contaminants getting in the egg. Or maybe there was a little micro crack. Or she’ll was over porous. Or sometimes it just happens!

I've had a porous egg hatch before

 

[ladybrasa]

I've had a porous egg hatch before

Certainly they can hatch and all eggs need some porosity, but over porous can just increase the risk of bacteria getting in. At least that’s my understanding! Also contribute to too much evaporation during incubation.

 

[U_Stormcrow]

You didn't see a blood ring during earlier candling???

and yes, I think the bacterial contamination theory is a good one, though I don't pretend to be an expert on this subject.

 

[Ridgerunner]

I've never seen anything like that. How did it smell? Was there a strong rotten egg smell or really not much?

I'm sure there are a huge number of different kinds of bacteria that could get inside so the effect and appearance can vary, but to me it looks like a mold spore got inside. How a mold spore could get inside I have no idea unless the egg was cracked.

I don't know what actually happened. Did you open the others you pulled?

 

[PippinTheChicken]

Did you wash the eggs before incubation?
when eggs are washed, you are washing off the layer that protects the egg from harmful bacteria

 

[FarmFullOfFowl]

Thank you so much everyone for your insights.

@ladybrasa Yes, it was horribly smelly!

@PippinTheChicken The eggs were not washed or rubbed before incubating since I wanted to keep the bloom on. I did not see any cracks on this egg.

The notes I had for this egg were that I had seen veining earlier in the candling. No blood ring @U_Stormcrow

@Ridgerunner the other two I took out looked nothing like this inside. One just looked scrambled and stinky, and the other looked like something had started to develop a long time ago and quit.

I guess I will list this as a strange bacteria or something and hope I NEVER see anything like this again. The photo really didn't do it justice.