By Donald Stotts  STILLWATER, Okla. – Obesity in horses is never a desired condition, but especially so for animals that have developed equine metabolic syndrome (EMS), a condition similar to Type II Diabetes in people.  Springtime can be especially hard for horses that suffer from EMS because the disorder is associated with insulin deregulation that can promote increased fat deposition and a reduced ability to lose weight, said Kris Hiney, Oklahoma State University Extension equine…