Just like humans, cows also need B-vitamins to carry out metabolic processes. These vitamins are a result of rumen microbe function in ruminants. Most of the time, these vitamins aren’t included in the makeup of a cow’s ration because we automatically assume that the rumen microbes will do the work for us, giving the animal its required amount. In an Ohio State Buckeye Dairy News, animal science assistant professor Kirby Krogstad suggested that adding extra B-vitamins to a dairy cow’s ration may be helpful to see a boost in milk production.