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.
Minerals are inorganic nutrients that are needed in relatively small quantities by the horse. The essential major minerals are calcium, phosphorus, magnesium, sodium, chloride, potassium and sulfur. The essential trace minerals needed are iron, zinc, copper, selenium, manganese, iodine, and cobalt.
Horses can use hay and other roughages as nutrient sources much more efficiently than other nonruminants such as poultry or pigs, although utilization is less efficient than in ruminants. Traditionally, it was stated that a good source of roughage should comprise at least 50% of the total equine ration by weight.It is now recommended that horses receive at least 1.5%â2% of their body weight in forage or forage substitutes such as hay cubes or other high-fiber source daily. 500-kg horse exercising for 1 hr in a hot environment will need to drink 72â92 L of water to replace sweat and evaporative losses. Lactating mares need 12â14 L per 100 kg body wt to sustain good health and milk production.