What causes blood rings when incubating?

[giasmom]

I've got 8 eggs in my bator. Today was day nine. All are doing well & moving around except 1 of them. This 1 egg has what I guess you call a blood ring. What causes this? Is it something that could of been prevented? These eggs have been handled very little, And temps & humidity have been steady since I set them. Anyone?

 

[giasmom]

Anybody?

 

[enola]

A blood ring indicates that the egg is no good. It may not have been fertile.

 

[FrenchHen]

IT means the embryo died. See this:
https://www.backyardchickens.com/forum/viewtopic.php?id=119420

 

[Dirt Road]

I suppose it would be the bird version of a miscarriage. It just happens sometimes. If the rest are doing well, you weren't doing anything terribly wrong.

Jim

 

[ashera]

Bacteria, most likely. I would leave it in the incubator a little longer, but if there is no developement it needs to be removed.

 

[TheBuff]

The main reason of slight blood rings is improper temperature. Check accuracy of thermometer. Check thermostat,heating element,current supply.check operating temperature against instructions.

 

[giasmom]

Thanks to all. I can see that it is no good I was just curious as to what may have caused it. Especially since all the others are okay. Its weird though , the other egg from this hen is fine.

 

[speckledhen]

A blood ring is formed when the developing embryo dies and the blood leaves the embryo to pool in a ring.

 

[giasmom]

Quote:
Thats what I was looking for..Specledhen you are the Queen of the chicken world!