The phrase "pastured cows" refers to cows that are allowed to freely graze and roam in a pasture, which is a large field with grass or other vegetation for them to eat. Full definition
I have been giving her straight fresh cows milk from pastured cows since. (westonaprice.org)
Grass - fed Traditions currently sources butter from the milk of pastured cows in Wisconsin and the German Alps. (healthytraditions.com)
Ghee contains Omega 3 and Omega 9 essential fatty acids along with vitamins A, D, E and K. Ghee made from organic butter of pastured cows is one of the highest natural sources of CLA (Conjugated Linoleic Acid). (freeandnative.com)