The Kraft Heinz Co. said its Kraft natural cheese is now made from milk that's free from the artificial hormone recombinant bovine somatotropin (rbST).
To produce the same amount of milk without rBST, Wisconsin farmers would need an additional 59,000 cows, 164,000 acres of cropland and 23.9 billion gallons of water.
A professor of animal science explains BST and rBST and the effects on milk supply, retail prices and environmental issues when dairy farmers abandon rBST technology.