"Senior feeds often have higher phosphorus levels as well as higher calcium than typical feeds. Depending on the type of feed, some senior feeds also include high levels of easily digestible fiber"
Complete feeds can be fed as the sole source of food for a horse, while supplements must be fed in conjunction with forage and other sources of fiber and nutrition.
The majority of senior horse feeds are complete feeds. Senior complete feeds include fiber and are designed to meet all of the nutritional needs of a horse.