...I've been having a hard time hatching my chocolate Seramas for the last couple of months. Mostly all are fertile but die right before or at lockdown![]()
I can't tell you how much bad luck I have had trying to breed, hatch and raise chocolate Seramas in Massachusetts! Terrible hatch rate was just one of the problems. Last summer I averaged about a 10% hatch rate once we had to turn on our central air conditioning. And almost all of the chicks I did manage to hatch were males.
Well, I had heard an old wive's tale that more pullets tend to hatch in the heat of August. If too high an incubation temperature selectively kills off male chicks, perhaps too low a temperature was causing females not to hatch for me. I really have no idea if this is a real phenomenon, but it made me try an experiment after my first batch of Serama eggs this year failed to hatch.
I increased the temperature to 101-101.5F and controlled the humidity around 60% (whereas before I used to get my best hatch rates of Ameraucana eggs at 99.5F and 35% humidity). Now I get 80-90% hatch rates. Or at least I have for three consecutive batches. Seramas developed in Malaysia, so it makes sense to me that they might need more tropical conditions during incubation. Just make sure you don't put any other breeds in with them. They will hatch too early with unabsorbed yolks.
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