Pullety
Songster
I did weigh the eggs right before setting and that’s my “W” in the equation.Measuring weight is a great way to learn about humidity and adjust accordingly. You would normally start weighing before you set the eggs, did you?
I did a little project with one of my Silkie hatches last year to show the comparison of weight loss percentage to the visible change in air cell size. Other than the infertile egg this was a 100% hatch so it's a great example.
Before I post all of the numbers, to answer your other question, yes, there's no harm in waiting to increase humidity. Just stop turning the eggs by day 18 and you could wait until day 19-20 or until you see the first pip to increase the humidity. I personally don't like to wait longer than day 20 because there are almost certainly internal pips if not some sneaky external pips by then.
- Eggs should lose 11-13% during first 18 days of incubation
- Between 0.6-0.7% per day average
- Measured final weight loss as 8am on day 18
Egg 1 – Day (0) 37 grams – Day (7) 36 grams – Day (15) 34 grams – Day (18) 33 grams – LOST 10.81%
Egg 2 – Day 0 – 37 grams - INFERTILE
Egg 3 – Day (0) 37 grams – Day (7) 35 grams – Day (15) 34 grams – Day (18) 33 grams – LOST 10.81%
Egg 4 – Day (0) 39 grams – Day (7) 37 grams – Day (15) 35 grams – Day (18) 35 grams – LOST 10.25%
Egg 5 – Day (0) 37 grams – Day (7) 36 grams – Day (15) 34 grams – Day (18) 33 grams – LOST 10.81%
Egg 6 – Day (0) 39 grams – Day (7) 38 grams – Day (15) 36 grams – Day (18) 35 grams – LOST 10.25%
Egg 7 – Day (0) 39 grams – Day (7) 36 grams – Day (15) 34 grams – Day (18) 34 grams – LOST 12.82%
Egg 8 – Day (0) 38 grams – Day (7) 37 grams – Day (15) 34 grams – Day (18) 33 grams – LOST 13.15%
Egg 9 – Day (0) 39 grams – Day (7) 38 grams – Day (15) 36 grams – Day (18) 35 grams – LOST 10.25%
Egg 10 – Day (0) 38 grams – Day (7) 36 grams – Day (15) 35 grams – Day (18) 34 grams – LOST 10.52%
Egg 11 – Day (0) 34 grams – Day (7) 33 grams – Day (15) 30 grams – Day (18) 29 grams – LOST 11.76%
Egg 12 – Day (0) 39 grams – Day (7) 37 grams – Day (15) 34 grams – Day (18) 34 grams – LOST 12.82%
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Thanks for sharing your weight loss records - that’s so cool how many of eggs in your project were slightly outside of the 11-13% range but the average was exactly in the middle - 12%!
I’m just confused about, if your eggs are in the ideal weight loss range on day 18, would it make a difference to them whether they get two more days of 45% humidity vs. two extra days 65%? I’m guessing not or you would have qualified the delaying option.
Thanks for helping!!