You wouldn't want to raise race horses in Wisconsin because the soil there is high in calcium, which makes them way too relaxed. Cattle raised in Wisconsin are big, easy-going and relaxed. In contrast, breeders in Kentucky don't raise contented cattle but race horses - nervous, jumpy, raring-to-go race horses. That's because the soil is high in phosphorus and low in calcium, which results in wound-up, chomping-at-the-bit, high energy horses. They can't relax and that's what you want in a race horse.