Baby Chick with Undeveloped Vent

[FarmFullOfFowl]

I am posting this to help anyone in the future or if anyone has insights for what could have caused my issue. I had a very sad case this morning. Firstly, my Bresse hatch went very badly. Of 28 eggs that I set 03/08, I had ONE hatch out healthy and one that hatched but sadly, we put down. It had an undeveloped vent and clearly had pressure and bulging in its backside. I had never seen that before, I washed it off to see better what was going on back there and put it back in the incubator to dry off. There was only a small amount of yellow ooze that was able to pass. When I checked a little later, the swelling was much worse and the skin was becoming even more taxed there. It looked like it was excruciating, so we put it down. Any insights? I really don't think there was anything that could have been done for the suffering babe. Good news is that I also hatched some Cream legbars and a Marans so the one hatchling that is good has buddies.

the pictures are hard to tell but there was no normal vent, just a very tiny lump where one would be

and then it just got worse..

 

[Lady of McCamley]

Looks like omphalitis which is internal infection at the vent from bacteria entering into the gut with the absorbing egg yolk.

Disinfect everything would be my suggestion. I don't artificial incubate, using broody hens solely, so I'm not sure how humidity would affect (although I should high humidity would mess with infections)...but I do know omphalitis.

LofMc