I have recommended complete-feed senior pellets over many years. These are easily digested and absorbed by older horses with poor teeth and reduced gastrointestinal function. There are many brands available now. The most common one, the pioneer product, and the one I have most experience with is Purina Equine Senior.
One commonly heard concern about these feeds is the sugar content. This tends to be more of a concern for horses with PPID (Cushing’s Disease), insulin resistance, and especially those with laminitis. More modern feeds tend toward higher fat and lower sugar. Some brands are lower sugar. Your vet should always guide feeding amounts dependent upon the horse’s particular condition. Some highly insulin resistant horses cannot tolerate typical senior feeds and must be fed special low starch diets.
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