Originally Posted by Metella
That's why I posted the musing ... my only ONLY thing I would change about my AB's is in my opinion there is only a faint tint of blue ... I want it deeper. When I compair to others who call their eggs blue (like CCLB) the AB is the same saturation - so I don't feel bad calling them blue eggs - I just want a deeper color.
Not a bad complaint since it is the only one.
The trouble with selecting for deeper blue eggs is that you essentially are selecting for less productive birds. While brown eggs have many MANY different genes responsible, only 1 gene is known to produce blue egg shells and the AB cockerel I have is definitely homozygous for it. Even then, the more productive a bird is, the lighter brown(or blue in this case) the egg shell color is.
If you are going to select for deeper blue, you would have to look at ONLY the first egg or first week of eggs a chicken lays(either at POL or after a molt). Looking at the average egg in peak production and selecting for the best color will result in less productive birds being propagated.
The CCL gene, the Ameraucana gene, the Araucana gene and the U of A blue blue egg gene are all the same gene on the same locus. There was another insertion site of blue into a Chinese breed of chicken that produces blue eggs but I have never found out what the breed is or even if it still exists. The only difference you can select for is whether it is tinted with brown to make green (and thus looking deeper in color), matte vs shiny shells, and amount of bloom.
Edited by Manningjw - 6/2/16 at 10:11am