As you know, our cows, pigs, chickens, and hens all live on pasture where they receive nutrition from the plants, Vitamin D from sunshine, and plenty of fresh air.
So, that being the case, it is critical that our pastures provide quality nutrition to grow healthy animals - that means NO chemicals.
Regenerating soil is not an easy thing to do. There is always more to learn. For example, last Spring is when I learned about the importance of soil biology and the role they play in making minerals available in a form a plant can use. The learning came from a special soil test called PLFA that identifies the type of biology and overall percentage of each type in your soil.
My soil showed heavy concentrations of bacteria and little fungi & protozoa. That means the biology was out of balance and was not able to make nutrients available to the plants.