The link no to my sheet is attached n my signature below..."feed comparison..."
Have you browsed the game bird tab of my Google sheet yet? There are direct links to the manufacturers linked to each product.
To be honest I haven't yet decided what I am going to do once mine start laying, which should be any day now.
I have a friend who feeds her laying quail regular old chicken layer feed and has no problems.
I feed my growing quail a game bird feed with a protein of 28%.
My point of posting the link to the book is to show that protein amounts can be lowered for fully grown birds, laying quail.
It is not necessary to continue to feed them a higher protein diet once they reach full size.