JLK Family Simmental Ranch

JLK Family Simmental Ranch, Chianina, Wessington Springs, SD, is located in Jerauld County and central South Dakota near Pierre. Jeff and Jamie Assman have raised Chianina cattle for over a decade, maintain registrations with the American Chianina Association and follow recommended health screening schedules.

Calves are born in the spring calving season, graze on native grassland and have sheltered access throughout the year. Feed fiber comes from hay grown on-site and mineral blends are matched to nutrient profiles that support muscle development and general well-being.

The ranch blends sustainable livestock methods with crop rotations, reflecting the family’s long agricultural heritage. Their focus on genetic diversity and clear records has been noted by neighboring producers for consistency in size and temperament. Visitors often comment on the ranch’s relaxed pace and the care given to each animal’s early socialization. They have shown heifers at county fairs and earned ribbons for frame and muscle quality.