Help On Egg Weight Loss Math!!!!

[JordanFamily]

Ok so I have some eggs that have been in the bator for 8 days now... I put in 14 and candled all today. 4 were not fertile and I had one 7 day or so quiter... My question is about weight loss of each egg... I put the weight in grams before incubation and today at 8 days below... Can you please let me know if this weight loss is good for these chicken eggs at this 8 day mark, or do I need to up or down the humidity a little... Also can someone tell me the average at each week an egg should loose? I know they are supose to loose around 12% through the whole incubation, but how do you break that down for candling every week or so??? Sorry I hate math!
I think my scale must have been off on the last two because why else would they be loosing more than the others???? Well let me know if this is alright weight loss at this stage or what it should be if it is not correct.
egg weight in grams on bantam and medium sized eggs.
1. 36 / 34
2. 36 / 34
3. 38 / 36
4. 42 / 40
5. 50 / 48
6. 38 / 36
7. 38 / 36
8. 52 / 48
9. 50 / 46
Thanks

 

[The Sheriff]

Here are my weights at one week:

1. 69/65
2. 72/66.5
3. 66.5//65
4. 66.5/66.5
5. 66.5/62
6. 66.5/62
7. 65/61
8. 66.5/65

Some of mine have lost a bit more than others and one hasn't changed. They are dark olive eggers s o I can't candle them. I am wondering if the difference in some has to do with placement in the incubator, warmer vs cooler spots. Anyway over the 21 days they should lose 13-14 % and mine at at just under 4% after one week. If my math is correct yours are down about 6%.

Post your next weights here and I will too and we can follow each other's progress!

Mary

 

[JordanFamily]

Quote:
Ok I will post my next weights... When? In a week??? And how did you do the math??? So should I up the humidity a little???
... Again I'm horrible at math... Thanks

 

[JordanFamily]

Quote:
Here are my new weights four days later on day 12. Should I increase or decrease the humidity, or leave it alone? I did put new eggs in the bator 4 days ago so do I have to weigh them to? Or can I just weigh these that will be hatching first???
1. 36 / 34/32
2. 36 / 34/34
3. 38 / 36/34
4. 42 / 40/38
5. 50 / 48/48
6. 38 / 36/34
7. 38 / 36/34
8. 52 / 48/48
9. 50 / 46/46

 

[The Sheriff]

My eggs go on lockdown tomorrow morning so I did one last weight on them today. They are as follows:

EGGS
#1. 69.0 down to 56.6 18%
#2. 72.0 down to 59.5 18%
#3. 66.5 down to 56.6 15%
#4. clear, tossed last week
#5. 66.5 down to 56.6 15%
#6. 66.5 down to 56.6 15%
#7. 65.0 down to 53.8 18%
#8. 66.5 down to 63.7 5%

It appears as if #8 might have quit sometime after Day 8 if the weight method is accurate. I am kind of scared to crack it open in case something went wrong with my scale or my math. I think I'll just leave it in the incubator until tomorrow. I need to replace the battery in my candling flashlight and maybe I'll be able to see something. Just wishful thinking as these are dark olive eggs.

 

[JordanFamily]

I also go into lockdown tomorrow... I'll put mine in lockdown tomorrow night... Here are my numbers today on day 17, and a graph to show the progress. Do you think I should up the humidity now or wait until lockdown??? How much should I up it??? Thanks
1. 32
2.32
3.46
4.34
5.44
6.36
7.32
8.46
9.32
total 334

 

[The Sheriff]

Your eggs have lost 12.2 % which is within the acceptable range as far as I know. Mine have lost a bit more. I have had mine dry incubating, with no water in the wells. Tomorrow they will move into the Brinsea with the automatic humidity pump set at 65%. I would think you would want to up the humidity at lockdown. I am doing this for the first time so I don't really know if it would significantly change anything to increase it now. I can just tell you what I would do and that would be to leave it alone because I don't know any better! But, if I find out differently I'll post again. My reason for going by weights had really nothing to do with humidity. I mainly did it to make sure they were developing since I can't see when I candle. I have to admit it worked well for that!

Mary

 

[babsbag]

To do the math you take the origingal weight and multiply it by .04 (the amount it should lose each week-assuming that it loses 12% over a three week period and that it loses it at an equal rate). For example if it weighted 36 grams you would multiply 36 X .04 and get 1.44. Now subtratct 1.44 from the 36 and your egg should weigh 34.56 grams at the end of the first week if you want it to lose 4% a week. If it is losing to much weight raise your humidity.

Another way is to take what the eggs weighs now and divide it by what it weighed at the beginning. So take the sentence 32 is what percent of 36? You would divide 32 by 36.

32/36 =.88
Now multiply .88 by 100 to convert it to percent.

.88x100 = 88.
Your egg is 88% of what it was when it started. Now subtract the 88% form 100% at your egg has lost 12%

Hope that helps, I'm not a teacher so I don't know how well I explained it.

I raised my humidity to 65-70% during lockdown.

 

[A roo or two]

My eggs go on lockdown tomorrow morning so I did one last weight on them today. They are as follows:

EGGS
#1. 69.0 down to 56.6 18%
#2. 72.0 down to 59.5 18%
#3. 66.5 down to 56.6 15%
#4. clear, tossed last week
#5. 66.5 down to 56.6 15%
#6. 66.5 down to 56.6 15%
#7. 65.0 down to 53.8 18%
#8. 66.5 down to 63.7 5%

It appears as if #8 might have quit sometime after Day 8 if the weight method is accurate. I am kind of scared to crack it open in case something went wrong with my scale or my math. I think I'll just leave it in the incubator until tomorrow. I need to replace the battery in my candling flashlight and maybe I'll be able to see something. Just wishful thinking as these are dark olive eggs.

Don't know if you still come on here but I was wondering how this hatched turned out with such high weight loss? I have a couple right now that are high like that and just went into lock down today.