Doug, from the looks of the calculator the porcelain color is pretty easy to screw up. If you breed it to lavender, you get lavender split to mottled......????? go figure. If you breed it to Millie Fleur you get Millie Fleur split to Lavender and if you breed it to Blue Millie Fleur, same thing only Blue Millie Fleur. That autosomal gene must be hard to hold on to, and easy to breed out.
I thought you should be able to breed lavender to Millie Fleur and get Porcelain, but it doesn't appear to be that simple.
I haven't taken the breedings out too many more generations yet as I've been too consumed right now with the move I'm involved with and trying to get settled in with my birds. I'm guessing that after the correct breeding of several generations, it would be possible to get porcelain.
What we really need is a genetics specialist like Blackdotte to consult with, but I fear we may not be up to the challenge. He operates on a whole 'nother level. We could try to open a new thread, specifically on d'Uccle color genetics and ask him if he would come help us out. Having a thread just on color might give it a little more heft. There are other really good specialists that get on here and give a wealth of information on genetics, even Henk the guy that developed the calculator gets on here at times, but you've got to put on your running shoes, and stay OPEN, don't shoot off your mouth like I have in the past. My ignorance has made an
"A double
S" out of me and it's terribly embarrassing. Actually, the more I write about this and think about it, the more interesting and exciting it gets to me. I love my d'Uccle and I've recently added the blue Millie Fleur and Lavender to my flock. I've got some really beautiful Millie Fleur and that's not even counting the new ones that JUST hatched from Lynne in California.
I've got 4 little "California Chicks."
I have two Millie Fleur hens with exceptional dispositions and conformation to boot, so I know they have a lot to contribute to the breed. If they are bred right they can improve the other varieties, but the skill is in breeding them right. That is what I am committed to doing, I just need the guidance to do so.
If you're interested let's start a color thread and see what we can stir up on this fascinating topic. We could call it quite simply, d'Uccle color genetics.