Cresty Neck in Horses: Spring Management for EMS and Laminitis Risk

What does a cresty neck in a horse mean?

A firm or enlarged cresty neck can be an early sign that a horse or pony is storing fat abnormally and may be at higher risk of insulin dysregulation and laminitis. It does not diagnose equine metabolic syndrome on its own, but it is a reason to assess body condition, spring pasture exposure and, where appropriate, speak with your veterinarian about testing.

For the good-doer, spring isn’t simply a welcome change in pasture. It can be the season when horses gain weight, a cresty neck becomes more pronounced and the risk of metabolic problems increases.

The good news is that recognising the warning signs early and putting a sensible management plan in place can make a significant difference.

Does a cresty neck mean equine metabolic syndrome?

One of the most useful visual clues that a horse may be predisposed to metabolic problems is the development of a cresty neck.

A firm, enlarged crest, which can be accompanied by fat deposits around the tail head, shoulders or behind the withers, can indicate abnormal fat accumulation and should prompt a closer look at the horse’s health and diet.

Not every cresty horse has equine metabolic syndrome (EMS), and a crest alone cannot diagnose EMS but it is recognised by vets as an important predictor of insulin dysregulation. Neck crest and abnormal regional fat deposition are warning signs, particularly in horses and ponies that are easy keepers or have previously experienced laminitis.

This is why late winter and early spring is the perfect time to assess your horse before the weight starts going on.

Don’t simply ask, “Does my horse look fat?” Look at where the fat is being stored, monitor body condition regularly and keep an eye on changes in the crest.

Why spring pasture increases laminitis risk

Insulin regulation matters

EMS is fundamentally associated with abnormalities in insulin regulation. Insulin is the metabolic hormone released to move sugar from the blood into storage or the muscles that need energy to function.  In insulin-dysregulated horses, the body doesn’t respond to insulin normally, causing problems with maintaining appropriate blood glucose levels.

For susceptible horses, periods of high pasture sugar and starch availability can place additional metabolic pressure on this system.

Importantly, managing an EMS-prone horse isn’t just about reducing calories. The quality and composition of the diet, pasture management, body condition and exercise all matter.

Reducing excessive intake of rapidly fermentable carbohydrates is an important part of management, but simply putting a horse on a very restricted diet for months isn’t the whole answer.

The goal should be to provide adequate nutrition while controlling excess energy and non-structural carbohydrate intake.

Exercise is part of the metabolic equation

Exercise is one of the most powerful tools available to horse owners.

Regular, appropriate exercise can help maintain muscle mass and support normal glucose and insulin metabolism. Working muscles can take up glucose through pathways that are not entirely dependent on insulin, making physical activity an important component of maintaining metabolic health.

That doesn’t necessarily mean intensive training. For many good doers, consistent movement is more important than occasional hard exercise.

Regular riding, groundwork, lunging, hill work, walking or simply increasing daily movement via track systems or placing food and water at opposite sides of the paddock can all contribute to a healthier management program. Naturally, each individual can only be exercised at a level appropriate for its soundness and condition. Exercise guidance for laminitis-prone horses.

For a horse carrying excess weight, however, exercise should be introduced progressively and with veterinary guidance where there is a history or suspicion of laminitis.

Don’t let a reduced diet become a nutrient-deficient diet

One of the challenges of managing an overweight horse is balancing calorie restriction with nutritional adequacy.

When owners reduce hard feed, eliminate concentrates, soak hay or dramatically reduce forage, they may unintentionally reduce the intake of essential vitamins and minerals.

This is particularly important because many good doers need less energy but they still need adequate fibre, protein, vitamins, minerals and omega-3 fatty acids.

Hay can provide a valuable source of fibre, but its vitamin and mineral profile can vary considerably depending on pasture, soil, plant maturity, harvesting and storage. Most vitamin levels decline during hay storage, while both vitamins and minerals  can be leached during the hay soaking process.

This is where a carefully formulated vitamin and mineral supplement can play an important role. It allows the overall diet to remain nutritionally balanced without adding a large amount of additional energy.

For the good doer, nutrient density—not feed volume—is often the key. Get our free e-book on feeding easy to keep, EMS and laminitis-prone horses.

Where do metabolic supplements fit?

Diet and exercise should always form the foundation of management. A metabolic supplement shouldn’t be viewed as a substitute for controlling body condition, managing pasture or providing appropriate exercise.

However, targeted nutritional support may complement a carefully managed diet.

Modern metabolic formulations such as Farmalogic Fat Pony look beyond a single ingredient and consider the complex relationship between the horse’s digestive system, microbiome, inflammation and metabolic regulation.

Two particularly interesting nutritional components of Farmalogic Fat Pony are prebiotics and omega-3 fatty acids as DHA and EPA.

Prebiotics: feeding the beneficial microbes

The horse’s hindgut is home to a vast microbial population that plays a central role in fibre digestion and overall gut health.

Prebiotics are substrates that can selectively support beneficial microorganisms in the digestive tract. By supporting a healthy microbial environment, prebiotics can contribute to normal digestive function and help maintain a healthy gut ecosystem.

Specific types of prebiotics such as short-chain fructo-oligosaccharides (scFOS) have a demonstrated ability to improve insulin sensitivity of horses, giving it a role as supportive nutrition for the management of obese, insulin-resistant horses at increased risk for laminitis*.

Marine-sourced omega-3s: supporting a healthy metabolic environment

Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) are long-chain omega-3 fatty acid with important roles in cell membranes and normal cellular signalling.

Omega-3 fatty acids are also involved in pathways associated with the body’s normal inflammatory response. Maintaining an appropriate balance of dietary fatty acids may therefore be useful as part of a broader nutritional strategy for horses where metabolic health is a concern.

Research shows that marine-sourced EPA and DHA are more effective than plant-sourced ALA for helping maintain insulin sensitivity and blood glucose clearance rates when horses were challenged with an increase in sugar intake**.

The important takeaway from this is that omega-3s aren’t a magic ingredient that “fixes” insulin resistance. They are a useful tool in providing targeted nutritional support for normal cellular and metabolic function when combined with appropriate diet and management.

Spring: act before the crest gets bigger

The best time to manage a good-doer is before the weight gain becomes obvious.

As spring pasture arrives, regularly monitor and record body condition, measure the crest, assess pasture intake, remove susceptible animals from high sugar pasture and review the complete diet. Consider whether your horse is receiving more energy than it needs—and whether reducing feed has also reduced its intake of essential nutrients.

For horses showing significant regional fat deposits, recurrent laminitis or other signs suggestive of insulin dysregulation, veterinary assessment and appropriate diagnostic testing should be considered REGARDLESS OF BODY CONDITION. Metabolic dysfunction occurs not only in obese horses, but in those underweight and in normal body condition.

And remember: managing a good doer isn’t about starving a horse.

It’s about providing the right nutrients in the right amounts, controlling excess sugar/starch intake, supporting normal insulin regulation and keeping the horse moving.

Spring grass is coming. Your good-doer doesn’t need to miss out—but it may need a smarter nutritional strategy. Need help balancing a restricted diet?
Farmalogic’s diet analysis service can help owners review forage, pasture access, supplements and nutrient intake for easy keepers and laminitis-prone horses. Request an expert diet analysis for your easy keeper.

This spring, don’t wait until the crest gets bigger. Get ahead of it.

Spring cresty-neck checklist

1. Photograph your horse from the side and rear every 2–4 weeks in consistent lighting.
2. Record body-condition and cresty-neck scores rather than relying only on visual impressions.
3. Check for regional fat deposits at the tail head, shoulders, withers and sheath or udder area.
4. Review grazing access, hay type and every source of calories, including treats.
5. Introduce exercise gradually and do not exercise a horse that may be actively laminitic without veterinary advice.
6. Arrange veterinary assessment if there is a history of laminitis, noticeable regional fat deposits, or concern about insulin dysregulation.

Frequently Asked Questions

Does a cresty neck mean my horse has EMS?

No. A cresty neck is not enough to diagnose EMS, but a firm or enlarging crest—especially with regional fat deposits or a laminitis history—should prompt a fuller assessment and discussion with your veterinarian.

Can a horse with a normal body condition have insulin dysregulation?

Yes. Some horses and ponies with metabolic dysfunction are not obviously overweight but show abnormal regional fat deposits or have a history of laminitis.

Should I exercise a horse with a cresty neck?

Exercise may be valuable for suitable horses, but the appropriate amount depends on soundness, current fitness and laminitis risk. Seek veterinary advice before starting or increasing exercise if laminitis is suspected or has occurred before.

What should I do if I think my horse has laminitis?

Treat it as urgent: remove access to feed as directed by your veterinarian, minimise movement, and contact your veterinarian promptly. Laminitis can be extremely painful and may involve serious hoof damage.

REFERENCES:

• * Respondek F, Myers K, Smith TL, Wagner A, Geor RJ. Dietary supplementation with short-chain fructo-oligosaccharides improves insulin sensitivity in obese horses. J Anim Sci. 2011 Jan;89(1):77-83. doi: 10.2527/jas.2010-3108. Epub 2010 Sep 24. PMID: 20870952.
• **Bronś, J.; Czyż, K.; Wyrostek, A.; Smoliński, J.; Kruszyński, W.; Sokoła-Wysoczańska, E.; Dorobisz, K. The Role of Omega-3 Fatty Acids in Horses’ Nutrition—A Review. Animals 2026, 16, 1626. https://doi.org/10.3390/ani16111626