By: Dr Rosie Alcorn BVSc PG Cert VPS Cert AVP MRCVS
Following the recent heatwave, many horse owners have noticed that the ground has become extremely hard, resembling concrete. This firm, unyielding surface can be tough on horses, with increasing reports of jarring and joint soreness - whether out hacking, schooling, or simply moving around the field.
While adjusting workload and carefully managing turnout are crucial, there are also valuable ways to support your horse from a nutritional perspective. One of the most well-researched dietary aids for equine joint health is omega-3 fatty acids. Among these, docosahexaenoic acid (DHA) is becoming particularly well recognised for its benefits.
DHA is a long-chain omega-3 polyunsaturated fatty acid. It is best known for supporting brain, heart, and eye health in humans. In horses, research over the past decade has highlighted its important role in regulating inflammation and supporting healthy cell membranes.
Omega-3s like DHA are classed as essential fatty acids, meaning a horse’s body cannot produce them in sufficient quantities - they must be obtained through the diet.
DHA is found in high levels in marine sources, particularly oily fish such as salmon and mackerel. It is also increasingly sourced from marine algae, which provides a sustainable and vegetarian-friendly alternative suitable for equine diets.
DHA may be particularly beneficial when horses are working on hard or compacted ground, where joints are under greater mechanical stress. It offers support in two key ways:
DHA helps regulate the production of inflammatory compounds such as cytokines and prostaglandins, which are often responsible for joint pain, swelling, and stiffness.
DHA may also help slow the breakdown of cartilage by reducing the activity of certain enzymes, such as matrix metalloproteinases (MMPs), which are more active in inflamed tissue.
By supporting a healthy inflammatory response and protecting cartilage, DHA contributes to long-term joint care for horses, whether they are active performance animals or older horses experiencing natural wear and tear.
One convenient way to include DHA in your horse’s diet is through specially formulated feeds. Golden Oldies is a veteran balancer mash designed specifically for older horses and ponies. It contains DHA from marine algae, offering targeted joint support through natural anti-inflammatory action.
DHA is a powerful omega-3 fatty acid with growing scientific support for its role in equine joint health. Derived from marine or algal sources, it delivers anti-inflammatory benefits and helps maintain healthy cartilage. Including DHA as part of a balanced diet can be especially helpful when your horse is working on hard, unyielding surfaces.
As always, consult your vet or an equine nutritionist before introducing any new supplements into your horse’s routine, especially those targeting horse joint support.
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