Indeterminate nodules are the only type found in Caesalpiniodeae and Mimosoideae and the most common type in Papilionoideae (Sprent, 2001; p. 32). As a result of the variety of ways the plant is infected by rhizobia, there are different types of nodules.
Vitamins are organic compounds that are needed in even smaller quantities than minerals by the horse, although no less critical. Vitamins can be divided into two groups, the fat soluble vitamins A, D, E and K and the water soluble C and B-complex vitamins.
The amount of vitamin E required for optimum immune function has not been thoroughly studied in horses, but has been shown to be much higher than normally fed in other species (Nockels, 1979; Tengerdy, 1981). Baalsrud and Overnes (1986) supplemented a basal diet daily with 600 IU vitamin E, 5 mg selenium, or both.he amount of vitamin E required for optimum immune function has not been thoroughly studied in horses, but has been shown to be much higher than normally fed in other species (Nockels, 1979; Tengerdy, 1981). Baalsrud and Overnes (1986) supplemented a basal diet daily with 600 IU vitamin E, 5 mg selenium, or both.