Instead of their natural grass diet, cows are fed a diet of grain. (westonaprice.org)
Cows that are raised on a 100 percent grass diet provide the only milk allowed in the Grassmilk product, according to Organic Valley, the largest cooperative of organic farmers in the U.S. (organicauthority.com)
A closer cataloguing of all the metabolites produced by the bacterial cultures digesting potato or grass diets showed that as the levels of the amino acids isoleucine and valine rose, so too did the amount of PYY released. (sciencedaily.com)