Cattle were not designed to eat grains so our beef and dairy cows get no grain, ever
Grass-fed beef has an omega 6:3 ratio of 0.16 to 1. This is the ratio science suggests is ideal for any mammal that eats beef. This is about the same ratio that fish has. Grass-fed beef usually has less than 10% of its fat as saturated. If your favorite pet is pregnant or nursing young, the extra omega-3 from the grass-fed beef will provide incredible nutritional benefits. Read more at: http://products.mercola.com/organic-beef/.
Also, milk from 100-percent grass-fed animals is much healthier than ordinary milk. It has a higher concentration of vitamins and antioxidants, fewer “bad” fats, and more “healthy” fats such as omega-3 fatty acids and CLA (conjugated linoleic acid). Learn more at www.realmilk.com.