American Meat—An Inside Look at Sustainable Farming in America

If you put good old-fashioned organically-raised, pasture-fed and finished meat in a nutrition analyzer, you’d find it’s one of the most nutritious foods you can eat.
However, many are still in the dark about the vast differences between Concentrated Animal Feeding Operations (CAFOs) and organically-raised, grass-fed meats, in terms of nutrient content and contamination with veterinary drugs, antibiotics, genetically modified organisms, and disease-causing pathogens.
Differences in the animals’ diets and living conditions create vastly different end products. For example, most CAFO cows are fed grains (oftentimes genetically engineered grains, which make matters even worse), when their natural diet consists of plain grass.

Much more here - http://www.wakingtimes.com/2013/11/26/american-meat-inside-look-sustainable-farming-america/