What Are Black Oil Sunflower Seeds?
There are different types of sunflower seeds but with horses you should only feed the Black oil sunflower seeds. The striped seeds have thicker, tougher hulls that cannot be broken down by your horse’s digestive system so you should never feed them to your horse.
What is the Nutritional Value of BOSS?
When checking my copy of the National Research Council’s book Nutrient Requirements of Horses (2007) I could not find the nutrient content for the seeds. Sunflower meal is listed but not the whole seeds and the presence of the hull would change the nutrient levels so the nutrient content of the meal is not comparable.