Mackey Simmental Ranch

Mackey Simmental Ranch raises registered Simmental cattle in Cokeville, WY, in the Star Valley region near Pocatello.

With more than a decade of selective breeding, it works with national breed organizations and follows recommended health testing protocols for every herd animal. Calves are born and nurtured in spacious pastures under close veterinary guidance, and early handling supports calm temperaments and strong social bonds. Rotational grazing practices help maintain healthy grasslands and contribute to the animals’ overall well-being.

This family-operated ranch has been part of the local agricultural community for generations, blending time-honored techniques with detailed record keeping. Its approach focuses on adaptability to Western Wyoming conditions and consistent growth rates, and annual weight assessments guide each breeding decision. One pasture hand remarked on the even disposition of young heifers during their first summer on grass, reflecting the ranch’s hands-on philosophy.

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