The short version
We already have threads on Russian farm data for cows (more milk) and hens (more eggs). Here's the sheep version, and it's a cleaner measurement: researchers actually tracked how much of the feed the animals digested, with and without shungite mixed in.
What they found
Shungite was added at 0.3%, 0.9%, and 1.5% of the dry feed. Digestibility went up across the board:
"увеличение переваримости сухого вещества на 0,75-3,48%, органического вещества - на 1,82-3,57%, сырого протеина - на 4,0-4,3% и сырой клетчатки - на 0,92-4,89%"
"an increase in digestibility of dry matter by 0.75-3.48%, organic matter by 1.82-3.57%, crude protein by 4.0-4.3%, and crude fibre by 0.92-4.89%."
The protein number is the interesting one - getting 4% more protein out of the same feed is a real result in livestock terms, and it lines up with the milk-and-eggs findings already on the forum: the animals aren't eating more, they're extracting more.
Sources
- Bogolyubova N.V., Romanov V.N., Devyatkin V.A. (2015), "Процессы пищеварения и переваримость питательных веществ у овец при использовании минерала шунгит...", Известия Самарской ГСХА:
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