Oatmeal is an excellent cereal for horses as it is very digestible, but in certain cases it can contribute to a certain excitability. The energy in oatmeal may end up, in some way, contributing to more expansive behaviors. For this reason, the ideal for more nervous horses is to use foods without oats (EASYMIX, PALATIN) that have an energy supply based on fibers and lipids of high bioavailability.
