The Worst Advice You Could Ever Get About fibre concentrated horse feed

https://equine-nutrition756.lumenforgex.com/posts/horse-feed-for-limited-grazing-diets-what-to-pick-and-why

Premium horse feed for breeding mares to promote fertility, optimal condition and lasting energy throughout gestation and lactation. Formulated with premium protein, calcium, vitamins and minerals for strong foal development and mare vitality.