That would be me!
Grain ration fanatic... for chickens, sheep, and cattle.
I'm pretty anal about what management groups are getting what protein...
I've experimented over the years and can say that a combination of at least 16% protein (if not a little higher) with at least 4% by weight (if not higher) in animal proteins, will dramatically increase not only egg production but overall health of laying hens.
Anything below 16% or with little to no animal protein and there's a dramatic dropped in egg production and quality.
Thus... my questions about the increase in protein when the grains are fermented...
If the protein really increases a full 3% (which I've not been able to find fact to back that up), then many of us could save a lot of money by fermenting... not because they eat less, but because the most expensive ingredients in our rations are the highest protein ones.
I only eliminate fish meal when I have BSF or free range... regardless of how high my protein is, they need that animal protein. But cutting out a higher protein grain like field peas would save $. I won't take shortcuts and feed garbage... I grind and mix my own and it's always soy free and gmo free... but any money I can save is always helpful.
Until I can double my BSF crawl off, I'm actually considering not feeing BSF at all in summer and freezing it for feeding over the winter. They free range in the summer so they don't need the BSF too.