Quote:
2x what CR said.
There are only 4 factors about eggs that can cause issues.
1) heat
2) humidity
3) air
4) deformity or other health issue with the chick.
So if you had the temp at 100 at all times, humidity at right place, incubator is not sealed tight to cause lack of oxygen then most likely it is just something that was wrong with the chick embryo.
If there was to much humidity the chick would have been soggy with dripping fluids.
If there was not enough humidity then the membrane would have shrunk around the embryo.
The temp is relative since the embryo's temp is more stable then the air so opening the bator should not cause problems there. unless the egg was allowed to get the inside temp down to dangerous levels. (I don't know what the dangerous temp would be I try never to get below 90F.)
As long as you have some sort of air exchange oxygen should not be a issue. In homemade bators this means a vent down low and a vent up high to create a air flow.
The rest is up to genetics and big guy and that's something we have no control of and just IS.
of your 4 questions the only thing I can think is maybe to high humidity... but you can see that when you open the eggs. you will get a "water" that pours out and amounts to more then the egg white.
I have a
Brinsea 20 Octo and it works really well, but I am thinking that there were a few times the humidity got too high. The book said 65% or higher....a few times after readding water it was has high as high 80s. I would lift lid and "burp" out the humidity. I did this until it got into the 70s. Maybe this was even too much and I need to be more careful on how I am adding water and what the humidity should be left at. I am on the
brinsea FB, I think I will go and post and ask.
Heat was a constant 99.5-99.7.
Thank you for the information. All of this is helpful.
Thank you for asking the questions, and thank you RW for the information. I think when I set my next hatch I'll use a hygrometer so I'll know what's going on with the humidity during lock down. I'm wondering if after the first few chicks hatched that there wasn't enough humidity for the remaining few eggs.
Still so much to learn - but I'm pretty happy with my first time results.