The steer above demonstrates how our "feedlot" works
For more information on the advantages of grass fed beef, try the link below. eatWILD has a very good breakdown of many advantages of grass fed beef, and includes source citations.
Advantages of Grass Fed Beef
Mother Nature intended for cows to eat grass just like they have done for thousands of years. However, when that cow leaves a ranch and spends the next 3-6 months in a feedlot, everything changes. Grain feeding changes the chemical composition of the meat in several ways.
One of the first things you will notice in a grass fed steak is that the fat is yellow. Grain fed beef will have white fat, which we have been taught is the new normal. Beef is naturally supposed to have yellow fat. That is due to a pigment in the fat called beta carotene that comes from grass. Humans use beta carotene to make Vitamin A. Plus, it is an antioxidant. That's also why free range egg yolks are darker and more orange than average grocery store eggs.
Beta carotene is just the beginning. There are numerous health benefits to eating grass fed beef. Here are just a few of the advantages of grass fed over feedlot beef:
Grass fed beef is 4X-5X lower in fat than grain fed beef. That makes grass fed beef as lean as chicken.
Grass fed beef has 1/2 the saturated fat of grain fed beef. Less fat = Fewer calories.
Grass fed beef has a much lower chance of e-coli contamination. A grain diet will increase the cow's stomach pH from 6.4 to 5.5. The e-coli bacteria that adapt to the more acidic pH of a feedlot cow become much stronger, and are not easily destroyed by the human digestive process.
Grass fed beef is 3X higher in Omega-3 fatty acids. Those are the good fatty acids found in fish and nuts.
Grass fed beef is 4X higher in Vitamin E.
Grass fed beef has 5X more conjugated linoleic acid. CLA has been shown to impede the growth of cancer cells.
Grass fed beef has a much smaller carbon footprint . Cows harvest their own food by grazing. Grain production uses more water, fertilizer, pesticides, herbicides, mechanization, fuel, etc.
Organs of grass fed cattle, such as liver and kidney, are safe to eat. Organs from grain fed beef are normally reserved for dog food as they have been damaged by pharmaceuticals and the high acidity of a grain diet.
Grass fed beef will still keep its red color for about a month. Many grocery stores now treat grain fed beef with carbon monoxide to help it maintain its color.