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yes shipped eggs loose weight, HOWEVER if they are collected on 1,2 & 3 days before shipment, and 2-3 days in the postal system, how old are the eggs? possible of 3 to 6 days old TOTAL right?I do agree packing makes a difference. I only received one double boxed shipment. I've read the 101 post a dozen times and do all I'm supposed to for shipped eggs it seems to me-settle12 hr, don't turn for 24-48 hr, never candle anyway but up, I did stop the turner on day 16 for a couple of sets which didn't make any difference in numbers.
I wonder how detached and saddle shaped cells impacts judging age by cell size. I've had such a hard time judging draw down by cell size because the air cells are so jacked up. I've also wondered about the accuracy of weighing as a method of tracking loss in shipped eggs. Some of the university papers I've reviewed emphasize starting with fresh laid weight to calculate the 13% loss. Well, wouldn't shipped eggs have already lost weight? If I use the weight on arrival to me, I'll end up taking them down more from their fresh laid weight then recommended.
For what it's worth, I weighed my last set of home eggs and ended up with some loosing 20%. If shipped eggs loose before they get to me, then I'm letting them loose more then they should, that might explain the shrink wrapping I'm seeing on eggtopsy. Doesn't explain the day 18-19 deaths though does it?
so if they shipped in bubble wrap it will actually prevent water loss from the egg to a degree, I posted an study a while back on keeping eggs in plastic to keep them fresher for incubation. anyways, so they are shipped as such and no older than 3-6 days for any of the eggs, so now sit an egg where you store them at temperature and humidity for storage and mark air cells until day 6. you will find pretty small air cells!
I can do this again and take pics if you dont want to do it, try the simple things to get a better understanding of their eggs and incubation, like shaking eggs at day olds, to 6 day olds and see how much force it takes to dislodge an air cell.
I am not fond of weighing eggs! I now know for a fact that I loose alot more than is suggested for chicken eggs! WEighing these duck eggs is in fact an eye opener!
see below duck eggs chart... and I will add that I feel in no way that any of the air cells are too large, the ones with the greatest loss also have the largest yellow area in the bottom without chol membranes! Some air cells appear way small to my eye! I am really worried about the amount of room they have in the eggs right now, with the choloric mem never reaching the bottom

Here is the membrane from freshly hatched White Faced Spanish
look awesome,