There may be measurable chemical changes in a feed that's been fermented. Whether these changes are of any use to the chicken is as far as I have read, inconclusive. Some people swear by it. Exactly how they've assessed these benefits with regard to changes in the chickens health is a bit of a mystery. Knowledge about feeds for humans and other creatures are subject to fads, often proven to be less than purported once properly researched.
I've tried it. I wrote this tongue in cheek article of my experience.
https://www.backyardchickens.com/ar...o-fermented-facts-myths-and-experience.74414/
I've tried it. I wrote this tongue in cheek article of my experience.
https://www.backyardchickens.com/ar...o-fermented-facts-myths-and-experience.74414/