Adequate hydration is necessary for circulation and transport of nutrients as well as being an essential part of the metabolism of energy, protein and minerals. The horse uses this store of water and electrolytes during work. Recent scientific studies indicate that particle size of ingesta in the gut of the horse may play an important role in water-holding capacity. This factor may be significant in the ability of the horse to tolerate periods of reduced water intake. The irregular access to water in the backcountry makes it important that our consideration of foodstuffs maximize natural water retention.
Forages provide maximum particle size as compared to cereal grains.
Thus, rations with maximum roughage are important in combating dehydration on back country trips. Horses should be allowed time to drink whenever possible to maintain adequate water reserve in the gut. These elements are essential in muscle and nerve function. Salt is the natural source of sodium and chloride and should be provided for stock on extended backcountry trips. These losses may not be replenished in adequate amounts by some rations.