Traditional grain based feeds are not suitable for certain types of horses. Some horses exhibit undesirable behavioural issues when fed on traditional grain feeds due to the amount of starch produced during digestion essentially, they can hot up so Ultra Low GI feed is the best calming horse feed for these types of horses. Despite the fact that grain feeds have been offered to horses for many years, some horses do not actually tolerate high starch diets very well; it can lead to adverse gut fermentation and other conditions such as tying up, sometimes even leading to colic. Other horses have pre-existing conditions such as laminitis, Cushings or Equine Metabolic Syndrome and are clinically required to be on feed which avoids high starch levels, and require a low sugar horse feed with energy sourced from fibre and oil.