To cool overheated cows ... The gene occurs naturally in at least six different cattle breeds across the world, including Senepol cows in Saint Croix in the U.S. Virgin Islands.

The Holsteins were crossed with Criollo cows, a breed raised for both beef and dairy ... “Despite all of our efforts to try to cool the cow, there’s still effective heat stress,” Bewley ...

The Holsteins were crossed with Criollo cows, a breed raised for both beef and dairy that’s become ... “Despite all of our efforts to try to cool the cow, there’s still effective heat stress,” Bewley ...