I posted this link in the meat chick area earlier and thought it might be useful to others here too.
The following links are for concentrates to mix your own feed. Recipes are included at the links
Hubbard:
Homestead Chick-En-Egg
Concentrate:
Purpose concentrate designed to make complete feeds for starting
growing chicks, broilers, and laying hens
http://www.homesteadfeeds.com/Poultry/chick_en_eggconcentrate.html
Kent
See the 36 GM Poultry base or the Premix 240
http://www.kentfeeds.com/products/poultry/other/poultry-Other.php
The following links are for concentrates to mix your own feed. Recipes are included at the links
Hubbard:
Homestead Chick-En-Egg

Purpose concentrate designed to make complete feeds for starting
growing chicks, broilers, and laying hens
http://www.homesteadfeeds.com/Poultry/chick_en_eggconcentrate.html
Kent
See the 36 GM Poultry base or the Premix 240
http://www.kentfeeds.com/products/poultry/other/poultry-Other.php