Compared to one year ago, milk production in the 23 major dairy states rose 1.4 percent in August. USDA reports new records were broken last month for production per cow. In Minnesota, milk output increased 1.4 percent. South Dakota production jumped 2.7 percent. The size of Minnesota’s dairy herd declined by 6,000 head over the past year and South Dakota’s cow numbers are up 3,000 head.