Like us, horses absorb most of their vitamin D requirements from the sunlight. In the winter when the daylight hours are shorter, and the sun’s intensity is lower it is unlikely that enough vitamin D is being provided by this natural route. Add in the possibility of horses being turned out with rugs on and the vitamin D available from sunlight is pretty much nil.
It's usually something overlooked every year, and for those feeding the full recommendations of their horse feed balancer or compound feed it’s not something most will need to worry about.
However, if your horse is a good doer who doesn’t get a full ration of feed each day or has any hard feed, there is a high change your horse will not be receiving enough vitamin D in their daily diet. A product like our OneCup vitamin and mineral supplement is a very easy way to address this with a very small feeding rate. Just 100gms will ensure the horse’s essential vitamins, minerals and trace elements are provided, each and every day. For good doers it can be fed mixed in with a handful of chaff, or even by hand, removing the need to use feed buckets.