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dan1

interrupted incubation

Have a broody 5 days into incubation. Left nest + unable to get back on for about 24h as was trapped out in run.
I'm assuming they'll all have died of cold + no point letting her resume sitting?
Thanks for any advice..
Bodger

I'd let her get back on and then slip her some new eggs.
Chez

My local gamekeeper says that they can still hatch even with 24 hours gap. But if you've got fresh eggs, go with Bodger's advice.
dan1

http://www.epress.com/w3jbio/vol3/boatright/
Ooh, just done 30 secs internet research; this study implies you can get away with short periods of arrested incubation dropping temp to 15deg c,
There may be some hope! She's settled back on. I might try candling a couple in a week and see if progressed.. I'll keep you posted
Dan
Bodger

We're better than 30 seconds internet research.
dan1

I'm sure you are, bodger, but the evidence is mounting up!
http://metzerfarms.blogspot.co.uk/2011/08/what-temperatures-kill-in-incubator.html
http://www.brinsea.com/customerservice/poweroff.html
I think it's worth a punt, especially as I really wanted to hatch those eggs, and won't get replacements for some time (one of the layers is the broody)
Bodger

The piece of information that you're quoting concerns incubation interupted at 17 days, you say that your broody was of her eggs for 24 hours at the five day stage.
dan1

The first study (boatright) arrested chicks at 6 days and kept them at lower temp for up to a week, still getting viable chicks. They only went down to 15deg c, though. My eggs probly went down to 5ish at night. Either way, I think it lends some hope
Bodger

Are these eggs that your own birds have laid or are they special bought in ones? If you have fresh eggs on hand, then I'd use some more. Broody hens will sit for way longer than 21 days, so that's not a problem.
If you stick with the old eggs then I wish you luck.
Chez

I think it is a good idea to wait a week then candle and see if they are still viable. You can always break her broodiness at that point if you need her to come back in to lay.
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