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Feeding for Hoof Health

is paramount for excellent hooves. A more apt title would be ‘how to feed your horse’ as feeding for hoof health is the same as feeding for the whole body.

TB hoof on Best Guess mix. Photo: Sarah Kuyken

Whole body = everything including coat, tail, mane, hooves, immune response, and even behaviour response where nutrition plays a part.

A horse requires a broad range of nutrients; proteins including essential amino acids that must come from the diet, carbohydrates, minerals,vitamins, antioxidants and a very small amount of fatty acids.

Many of the nutrients are produced from the activity of microbes fermenting the otherwise indigestible fibre, for that reason a high fibre diet with grass and/or hay should make up the bulk of the diet. In fact, the higher the fibre level of the diet, the better.

Photo is of a Thoroughbred, taken by hoof care practitioner Sarah Kuyken.

Keeping in mind what is needed for great hoof quality and growth is the same as what is needed for a healthy coat, mane, tail, well being in general and a robust immune system, let’s have a look at the key ingredients:


Keratin is an extremely strong protein and is the major component in skin, mane and tail, hooves, and teeth as is the case for us with our skin, hair and nails. Keratin is made up of a chain of amino acids with unique properties depending on the sequence; it can be inflexible and hard like hooves or soft as is the case with skin depending on the levels of the various amino acids.

Many of the amino acids that are needed for keratin are never deficient; horses can manufacture them from other amino acids. One that has to come from the diet is methionine as it cannot be manufactured from other amino acids. Methionine has a sulfur bond which has confused some people into thinking that sulfur should be supplemented in the diet. There is no recommendation to supplement sulfur on it’s own and can be harmful. Horses do have a small requirement for sulfur but it’s easily satisfied by pasture/hay and other feeds as part of amino acids with sulfur bonds. Feeding sulfur doesn’t create more methionine. If you think your horse may be deficient in methionine, it’s also likely to be deficient in lysine and threonine. In that case Balanced Equine equine amino will help.

Only change was mineral, amino acids supplementation. Photo: Maja Stocker


The periople consists of dense keratin and fatty acids. Most people can recognise the periople at the top of the hoof wall at the coronet band at the transition between soft skin and the hoof but it actually extends all the way around the hoof wall providing a protective outer layer. The periople seals moisture in the deeper parts of the hoof and keeps water out.

Fat is never deficient in the diet if grass is the predominant forage, there is no necessity to supplement more fat. A horse’s natural diet is grass which is less than 6% fat and contains the anti inflammatory omega-3 and pro inflammatory omega-6 fatty acids, both have very important roles to play in the immune system. However, if a horse was on hay rather than grass then a small amount of fat supplementation is necessary as the curing process destroys these fragile fatty acids. In grass the ratio of omega-3 to omega-6 is about 4:1 to 6:1. If we want to ensure more omega-3 fatty acids than omega-6 fatty acids are in the diet then avoid vegetable oils like rice bran oil or canola oil and seeds like black sunflower seeds and instead linseeds.


First of all, a diet with all the mineral requirements covered is essential for all processes in the horse’s body, not just what is happening in the hooves. But it isn’t just enough to have levels of minerals satisfied, it’s also important to have the minerals in the right proportions to each other to prevent one mineral interfering with the absorption of another.

It’s known that too much zinc in the diet interferes with copper absorption and it’s strongly suspected that the reverse situation applies as well, something to consider if you are adding copper sulphate to a feed without knowing what the zinc intake is.

Copper and zinc are the most likely trace minerals to be deficient in the diet, especially copper as plants have a lower requirement for these minerals compared to horses. Both are involved in many processes, especially enzymes which must be present for chemical reactions to occur. Little wonder then if either or both are deficient that slow hoof growth or thin walls are the result.

Sulfur interferes with absorption of copper and is suspected of hindering other minerals, for example it has been used as an antidote for selenium poisoning. Too much phosphorus in the diet will hinder the uptake of calcium and too much calcium will hinder the uptake of phosphorus. Feeding a correctly mineral balanced diet including correct amounts and proportions of essential fatty acids and adequate quantity and quality protein will support optimum hoof growth and quality.

This is further explained in What is a balanced diet for horses?


Vitamin E is an important antioxidant and one of it’s roles is to protect fats. Not likely to be deficient in horses on grass or hay but if the horse is in regular work then supplementation is a good idea. For more information about feeding vitamin E see the section vitamins on the Which Mix page.

Most vitamins like vitamin A and the B vitamins like biotin, folic acid and B12 are plentiful in grass and hay or are manufactured by microbes in the gut so are unlikely to cause hoof problems. Most hoof supplements contain biotin as some studies found that supplementation did improve hoof quality but in others there was no improvement. If not deficient then more is not better, any excess is excreted. Biotin supplementation is advised for horses on high grain diets with little forage or compromised gut function. Biotin is included in Balanced Equine  HoofXtra Mix  and you can also purchase the high concentrated Balanced Equine biotin

To sum up, poor hoof quality could be caused by:

  • inadequate protein in the diet


  • methionine deficiency – unlikely on a pasture and/or hay diet. Horses on a high grain diet with little hay or grass may need supplementing


  • a lack of fatty acids in hay diets – freshly ground linseeds or cold pressed linseed oil is the best source of the omega-3 and omega-6 fatty acids in the same ratio as grass. See the article called ‘Linseed, is it safe?’


  • biotin deficiency – less likely on a high forage diet


  • vitamin E for horses in work


  • a deficiency in minerals like calcium, phosphorus, magnesium and selenium but particularly copper and zinc either caused by insufficient amounts or in the wrong proportions.


Nutrition,  hoof care and movement go hand in hand

No discussion about hoof quality should leave out other important factors. To get fabulous hooves, the best approach is combining regular excellent hoof care with an optimal nutrient intake (based on data). Where this isn’t possible, a quality mineral supplement is the next best option such as HoofXtra. To prevent cracking in hooves, there are 3 aspects of horse care that are all very important – hoof care, nutrition, and exercise/movement.

Quality hoof care is all about optimal balance allowing the hoof to grow stronger and to function properly. If the hoof wall is too long, it will magnify leverage forces on the laminae, stretching and weakening the laminae, allowing pathogens in. These pathogens can eat away the laminae, preventing the transfer of nutrients to the outside wall, drying out the connective tissue between the tubules. With the drying and weakening of the hoof wall, mechanical forces can cause the more obvious large cracks or breaks in this hoof.

A horse on a balanced mineral diet will be set up for a robust immune system, as the immune system is built on nutrients. The immune system is dependent on many factors like workload, stress, wellness (for example, an underlying infection). However a horse with the best possible intake, even the gold standard with it based on data from pasture or hay testing, whichever is applicable, can’t avoid infections like seedy toe and thrush if the conditions are set up for it. Assuming a horse is not stressed (for example, separated from a paddock mate or new location and so forth), a workload that stresses a horse, not unwell, then seedy toe and thrush can still occur if the conditions are present that allow these microbes to flourish. Nutrition and hoof care work together. If there are any gaps/cracks in the hooves which allow the microbes to penetrate the hoof, it gives those microbes an opportunity to have a population boom in that environment and you have what we call seedy toe. The minerals will support a horse’s immune system but once established, you have to remove the infection and support recovery. With thrush, manure, wet conditions make it so much easier for these microbes to become established.

Movement will stimulate blood flow/perfusion (nutrients to cells) and hoof growth.

Further reading

Links may change over time. If a link doesn’t work, search the title in your search engine.

This article is based on Dr Eleanor Kellon’s VMD (2008) Feeding the Hoof,%20Dr.%20Kellon.pdf

To learn how to balance your own horses’ diets enrol in the NRCPlus course presented by Dr Eleanor Kellon VMD

Dr Kellon Diet or Trim – What’s More Important for Hoof Health

Pete Ramey Feeding the hoof

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