Stabilizing aircells on shipped eggs

[song of joy]

song of joy Thank you for sharing, great article!

You're welcome!

 

[Nksg75]

Thank you for responding!! I did not turn for the first 4-5 days and it looks like that help tremendously. I just couldn't bring myself to wait the 7-8 days for fear of so many things I have read in articles about the chicks unable to hatch due to not turning. I realize they were talking about regular eggs from local sources, however I thought a middle ground would work.
I do have a couple possible blood rings, however I am seeing life in a few of them. So I am pleased!!
Next time I get shipped eggs, I will wait the 7-8 days.

 

[Cot Cot]

Yes, I was planning on posting the whole expierement on here. It's kind of fun, regardless of outcome! Makes for a great school project that's for sure. The first time I did it I had a decent number of eggs(60) to do the expierement on, this time I will be lucky to have any. I only ordered 6, however I heard he is generous with extras. So the expierement probably has too few.

Here is a link to the article I read:

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300006


Here is the formula we used directly from the article. We just did the shape index calculation, as I am not much of a mathematician and most of the terminology in regard to stepwise logistics regression...blah blah blah was so confusing to me.


The maximum widths and lengths of each egg were measured with using Mutitoyo digital calliper (Mutitoyo, Japan) (±0.01 mm) and their shape index was calculated using the formula:

SI = (W / L) × 100 (Yannakopoulos & Tserveni-Gousi, 1986).

where SI= shape index, W= width of the egg, and L= length of the egg

 

[Cot Cot]

Hi,
Very excited to do this experiment as well. We gathered all of our data and calculated SI and V but how did you use this data to predict the gender.

 

[Cot Cot]

One more question. Is it possible to see the possible displaced air cells prior to incubation? I received my shipped eggs yesterday, am storing them appropriately until tomorrow morning to place in the incubator. I candled them but did not see any displacement of air cells on 9 eggs.

 

[Nksg75]

If you tilt them slowly while candling from top of the egg you should be able to see the aircell move. That's the way I do it anyway.
I truly don't know if there is another way to see this without turning the egg while candling.
Since your eggs are shipped eggs, I would just automatically assume they have displaced aircells. As far as the extent of damage to the aircells, that's something you will have to candle, and tilt to automatically see.

 

[Nksg75]

Hi,
Very excited to do this experiment as well. We gathered all of our data and calculated SI and V but how did you use this data to predict the gender.

I did not take the Volume into consideration mainly because I don't have a scale that sensitive. I just used the Shape Index.
I will take a picture of my log.

This article was confusing in parts because my knowledge of some these ways to convert data is way above my head!!
If you understand it, please, please explain it to me!!
In the first expierement, I used the SI as an indicator of sex. I took the highest SI eggs and put them in a separate hatcher.
I have 2 hatchers, so I just separated the eggs to make it easy.
All of one hatcher had the largest SI% and the other hatcher had the lower SI%
I will say, my favorite hatcher is a Brinsea Octogan 20, so I had to work with the limited space.
Instead of taking a 50/50 ratio of males/females, I had to select fewer (female SI eggs)
I then took all the chicks that hatched from the Brinsea and put in a separate brooder.

 

[Nksg75]

One more question. Is it possible to see the possible displaced air cells prior to incubation? I received my shipped eggs yesterday, am storing them appropriately until tomorrow morning to place in the incubator. I candled them but did not see any displacement of air cells on 9 eggs.

When you candled them, did you tilt them slightly?

 

[Nksg75]

Ok here are my charts from the first batch that I did.

 

[Nksg75]

Page 2