AnthNDacula
Songster
I hatched 2dz from Trader Joes and 2dz from Whole Foods. The Whole Foods eggs were fresher--5 days old according to the Julian date on the carton. The Trader Joes eggs were 9 days old.
I was able to set 45--three were cracked and I hatched out 33. Not bad for store eggs!
The big lesson for me here is that refrigeration does not have to kill the embryo. On the rare occasion I gather eggs for hatching I am in the hen house 4 or 5 times a day trying to prevent them chilling. Maybe I can just chill out and collect them once a day.