F

Fast release energy

Energy from sources such as cooked cereals, that raise blood sugar levels and quickly give energy for fast work. All horses need this form of energy to some degree, but it is ideal for showjumpers, polo ponies and some dressage horses.

Forage

Feed based on long-stem, fibrous plant material. Includes grass, hay, haylage, straw and chaff.

FOS

Fructo-oligosaccharides. A complex of carbohydrate molecules that is found in many vegetables and cells. They act as a prebiotic within the intestine and encourage the growth of beneficial bacteria.

Free radical

A reactive chemical produced when your horse’s cells use oxygen. In excess, they may be harmful.