It does not increase the protein, it makes it more usable to the body.I am in the process of setting up to start FF. But I'm a little confused about what the protein content of the mix should be. I found the formula for figuring out the finished mix % based on the individual percentages and how many parts there are. But how is the % affected by the fact that fementing it increases the protein? What is the ideal % for laying hens? Right now I just feed a standard commercial feed, I think it's 16%. But I want to add scratch grains, or hopefully find somewhere I can get other whole grains. Any input is appreciated!
I can't tell you what to make your protein level. Everyone prefers different %'s. I'd aim for 18% for my own birds. Some people like 15-16% and others 22%.
Hope someone else can help you with your other questions.
Oh and it makes 12% more protein usable.