77% less fat than beef (Compared to USDA Data for Beef Rib-Eye. Fat reduced from 12 g to 3 g per 112 g serving). 98% lean. 2% fat. Est 1985. Protectors of excellence. Revered by 4 star restaurant chefs. Free roaming (continuous free access to the outdoors for a minimum of 120 days per year). No antibiotics ever. No added hormones (there are no hormones approved for use in bison by federal regulations). D'Artagnan Plains Bison are raised with minimal human interaction by a cooperative of US ranches that meet our exacting specifications. These indigenous bovines are left to graze as they have done for centuries, enriching the soil as they move across west pastures (continuous free access to the outdoors for a minimum of 120 days per year). They live in a natural environment, and eat a 100% vegetarian diet, without the use of hormones (there are no hormones approved for use in bison by federal regulations) or steroids. US inspected and passed by Department of Agriculture. dartagnan.com. Try All Our Bison Products: Ground patties; Ground meat; Top sirloin steak; Rib-eye steak.