RICE LAKE, WIS.
Lee Graese started raising bison in the mid-1990s, after the former professional powerlifter and his nutritionist wife, Mary, decided it was the best source of nutrient-rich, lean proteins to feed their young family.
From that start, they committed to feeding their animals grass rather than the grains that most farmers use to fatten their livestock before slaughter. Instead of housing them in closely confined pens and feedlots, the family allows their bison to graze in fields until the moment they are harvested for their meat.
"The slaughter and processing world is all about efficiency," said Lee Graese's son, Sean. "We have a little different philosophy. We work at a snail's pace when we are out there during the field harvest. It's better for the rancher and the consumer and the animal."
Americans consume billions of pounds of meat each year, but the industrial approach to producing it faces rising scrutiny from environmentalists, animal rights activists and consumers. Sales of beef produced the traditional way have been in decline, and consumers looking for healthier, more environmentally friendly options are increasingly turning to grass-fed meat.
Sales of fresh grass-fed beef soared from $17 million in 2012 to $272 million just four years later, according to Nielsen data published in an April report from Bonterra Partners, an investment consulting firm that specializes in sustainable agriculture.
This shift has helped the Graese's family-owned business, Northstar Bison, become one of the world's largest producers of 100 percent grass-fed bison. Its products are popular both with consumers turned off by the massive, industrial-scale feedlots and slaughterhouses that produce most of the beef found in grocery stores, and with companies that are under increasing pressure to appeal to those consumers.
General Mills helped the Graeses secure $4 million in financing to expand production of its meat. Today, Northstar sells about a quarter of its production to Epic Provisions, a fast-growing Texas company that uses only grass-fed beef in its protein bars and other meat snacks.