http://www.fertrell.com/poultry.htm
Fertrell nutri-balancer is a name I see a lot on BYC but have not tried it.
You might be able to get it from Azurestandard if you order from them.
I mix the following for my feed (I am not the person you asked):
organic layer pellets
organic chick starter
millet/birdseed
BOSS
split peas
rolled oats
rolled barley
wheat
organic whole corn
oyster shell
grit
redmond mineral conditioner
When it's all mixed up it looks delish!
If I run out of...