Why Grass Fed meats?
There are several benefits of grass-fed meats over traditional corn-fed meats. Grass-fed meat is much leaner, has a lower fat content and therefore a lower calorie content. Eatwild.com offers this example: a 6-ounce steak from a grass-finished steer can have 100 fewer calories than a 6-ounce steak from a grain-fed steer. If you eat a typical amount of beef (66.5 pounds a year), switching to lean grassfed beef will save you 17,733 calories a year—without requiring any willpower or change in your eating habits. If everything else in your diet remains constant, you'll lose about six pounds a year. Grass fed beef is also higher in Omega-3's. Besides all of the health benefits, grass fed meats just taste better.
Here are several links where you can research more about why grass-fed is better: