Vitamin D and its roles in horses supplied with adequate daily amounts:
- Regulator of calcium absorption
- Regulator for blood levels of calcium and phosphorus
- Regulator of bone calcium deposition
- Regulator of kidney reabsorption of calcium and phosphorus
- Supports immunity and antiviral defenses
Did you know that active vitamin D is produced in skin during exposure to UV light such as the rays of the sun ?
A horse on total indoor management needs regular vitamin D supplementation.
Vitamin D is particularly unstable when exposed to light, which is the main limiting factor regarding this vitamin.
Depending on the physiological status of the horse and its management, the needs vary from 1000 to 8000 IU of vitamin D per day.
An adequate calcium-phosphorus ratio must be supplied in the feed in order to guarantee the good efficacy of this vitamin.