Which horse feed has the highest content of Vitamin b?

Brewer's yeast is often considered one of the horse feeds with the highest content of B vitamins, particularly B1 (thiamine), B2 (riboflavin), and B12 (cobalamin). Additionally, alfalfa hay and fortified commercial feeds can also provide significant amounts of B vitamins. It's essential to check specific product labels for precise vitamin content, as formulations can vary widely. Always consult with a veterinarian or equine nutritionist for the best feeding practices.