Casey Mackenzie

Casey Mackenzie is a Shire horse breeder in Longmont, CO, Boulder County and the Front Range near Boulder. Casey maintains records in national Shire horse registries and schedules regular veterinary screenings, including genetic health panels, joint evaluations and farrier consultations to support sound development.

The horses are raised on a mix of pasture and shelter paddocks with daily turnout, where they graze native grasses and learn herd dynamics. Foals receive early handling and basic ground training, helping young horses adapt to haltering, grooming and leading before weaning. The farm emphasizes balanced nutrition with forage-first diets supplemented by senior feed blends to support growth. This hands-on approach fosters the sturdy conformation and gentle temperament that owners value in Shire horses. Several graduates from the program have been noted for steady performances in draft demonstrations and educational farm visits. These horses adjust to seasonal weather shifts and develop thick coats for cold Colorado winters at elevation.