Vitamins and Minerals

This article reprinted with permission from herbalist Robert McDowell, from © 2000.

Natural Sources of Vitamin and Minerals for Horses

by Robert McDowell
Most horse owners and trainers nowadays give vitamins and minerals to horses as part of their daily programme.

Since the discovery of Vitamin C and its link with the disease Scurvy explained, we are accustomed to being told by the media and by health authorities that our health will be improved if we take additional Vitamin and Mineral supplements to our normal diets.

We are told that it is something about the modern lifestyle, stress and the denaturing of our soils etc. which means that our food supply is not as good as it was in the "old days". This is of course true to some extent and we should be doing much more about the quality of our food. We should really be working much harder on Organic and Chemical-free farming than we are doing but until the market provides a greater incentive for so doing, this movement will be slow.

As usual of course, this is not the whole truth.

Modern diets (although maybe poorer in quality than an ideal medieval diet for example) are vastly better in regard to the variety of food available. Also, although the subsistence farmer had organic food, often seasonally he suffered severe shortages, storage problems and malnutrition. Scurvy was found to occur in Cities as well as on Sailing Ships. Even amongst the wealthy, poor dietary habits often caused severe health problems.

This to say nothing about medicine which often contained poisonous substances like Mercury, Arsenic, Antimony and Opium, which did nothing much for the health of the population either.

Vitamin and Mineral Supplements in the last 30 years became such a lucrative market in human nutrition that it was quickly taken up by the Animal Feed and Veterinary Supply Industries. There are a wide range of such products marketed especially for horses. Some are harmless, some are detrimental to health and most have more value as a 'feel good - convenience thing" for the owner, than anything else.

Let us consider some of the natural sources of Vitamins and Minerals one at a time.

Vitamin A: Is found in Carrots and Leafy Green Vegetables and is therefore much better fed as such, rather than processed supplements.

Vitamin B: Is found in all grains and the idea of giving Vitamin B supplements to animals which have grain in their diet is a complete nonsense. Vitamin B12 is a little harder to get and is best found in the herb Comfrey that can be offered (occasionally and in small quantities!) and in these doses is a valuable supplement.

Bioflavinoids: Can be supplied with a little Buckwheat to provide for Rutin especially for healthy blood vessels.

Vitamin C: Is found in fresh greens in abundance and it is a poor horse which has no access to green pick. If a horse is kept away from greens for a time a few Rosehips Tea Bags in boiling water and allowed to cool will provide all the Vitamin C and Iron that is missing.

Choline: Is found in bitter vegetables and the leaves of Dandelions and a few fresh leaves can be offered a stabled horse from time to time. Otherwise let a few dandelions grow around the yard and the Horse will chose them for itself.

Vitamin D: Is synthesized by the action of Sunlight on Skin and found in Fish Oils. Not needed as a supplement for grazing animals.

Vitamin E: Is found in fresh wheat germ along with the whole range of Vitamin B's. Wheat germ is a commercial source of both E's and B's. A little fresh wheat germ for those horses not on grains is all that is required. Anything more expensive or more processed is nonsense.

Calcium: Is found in Dry Feed, Leafy Greens and in Molasses (along with Sulfur)

Iron: Is found in Wheat Germ, Green Feed, Rosehips and in Molasses.

Silica: Is found in Grain and Dry Feed in abundance.

Trace Elements: Are all found in Kelp.

It all boils down to Grains, Green Feed, Wheat Germ, Molasses, Carrots, Rosehips and Kelp. To this I would add Garlic as a protection against infection and provide access to the odd weed like Dandelion and Comfrey.


Vitamin and mineral supplements should only be added to the diet if the ration is deficient in these nutrients.

Vitamins are needed in much smaller amounts than other nutrients, but they are important for many body functions. Each vitamin has a different job in the body. Some vitamins are in the food a horse eats while others are produced inside the horse. Depending on its diet, a horse may need vitamin supplements. Supplements are not necessary if a horse grazes on high quality pasture or eats high quality hay.

Several factors can decrease the vitamin content of horse feed. Some vitamins are sensitive to sunlight, heat, and oxidation (especially vitamins E and A). Hay stored for a year or longer, and hay that was rained on may have a decreased concentration of vitamins. In the processing of some feeds, heat and pressure can cause the loss of vitamins, so it is important to know if the vitamins were added back in, and if so how were they added. The most common vitamins added to horse feeds are A (important for reproduction), E (a natural preservative/antioxidant that helps ensure optimum function of the reproductive, muscular, circulatory, nervous, and immune systems), and H (biotin, which helps improve hoof and hair quality). Iron, copper, phosphorous, calcium and magnesium are minerals important to the horse. Without iron, blood can not carry oxygen to the body’s cells. Without calcium and phosphorous, bones and teeth will not form properly. Calcium and phosphorous should be fed in a ratio that ranges from 3:1 (three parts calcium for each part of phosphorous) and no less than 1:1. An imbalance of these and other minerals can cause developmental bone disease in young, growing horses.

Vitamin and mineral supplements should only be added to the diet if the ration is deficient in these nutrients. Generally, the major minerals of concern in feeding horses are calcium, phosphorus and salt. In some geographical areas, the lack of selenium and, in growing horses, copper and zinc, is a concern. Other minerals are likely to be present in adequate amounts in a normal diet with high quality feeds.

The Equine

A2A Affordable Web Design - SMS Marketing - Affordable SEO & English Lakes