What Should You Feed a Senior Horse?

What Should You Feed a Senior Horse?

By Dr Duncan Houston

Feeding a senior horse is not as simple as buying a bag that says “senior” on it.

Some older horses do beautifully on good pasture, quality hay, salt, and a balanced vitamin and mineral program. Others cannot chew hay properly, lose weight despite eating, develop choke risk, or need a soaked complete feed because their teeth can no longer do the job.

The real question is not “How old is the horse?”

The real question is: Can this horse chew, digest, maintain weight, and stay metabolically safe on the current diet?

That is where senior horse nutrition becomes veterinary management, not feed-room guesswork.

Quick Answer

A senior horse should be fed according to dental health, body condition, metabolic status, workload, and ability to chew forage. If the horse has good teeth, normal weight, and no major medical issues, good-quality forage plus a balanced vitamin and mineral source may be enough. If the horse has poor teeth, weight loss, choke risk, PPID, EMS, insulin dysregulation, or laminitis risk, the diet needs to be adjusted more carefully with soaked feeds, forage alternatives, lower starch and sugar options, and veterinary guidance. Forage should still remain the foundation of the diet whenever possible. (MSD Veterinary Manual)

Does Every Senior Horse Need Senior Feed?

No.

This is one of the biggest myths in horse feeding.

A horse does not automatically need senior feed just because they are 15, 18, 20, or even older. Some senior horses have excellent teeth, good body condition, normal manure, a shiny coat, and a stable weight. Those horses may do very well on the same basic forage-based diet they had as mature adults, with adjustments only if their workload, health, or body condition changes.

The American Association of Equine Practitioners makes the broader point that older horses need a total management plan built around nutrition, care, and exercise, not neglect disguised as retirement. In other words, the older horse needs attention, not automatic assumptions. (AAEP)

In practice, I would not switch a healthy older horse to senior feed just because of age. I would first ask:

• Is the horse maintaining weight?

• Can they chew hay properly?

• Are they dropping feed or quidding?

• Are there long hay stems or whole grain in the manure?

• Is the horse overweight, thin, or losing muscle?

• Is there a history of laminitis?

• Are there signs of PPID or EMS?

• Is the current feed meeting vitamin, mineral, protein, and calorie needs?

The bag label matters less than the horse standing in front of you.

The Three Questions That Decide the Diet

When feeding a senior horse, I like to start with three practical questions.

1. Can the Horse Chew Properly?

Teeth drive the diet.

If the horse can chew long-stem hay well, the diet can often stay forage-based. If the horse cannot chew hay, no amount of expensive senior feed fairy dust will fix a diet built on forage they cannot process.

2. Is the Horse Too Thin, Ideal, or Too Fat?

Senior horses can go either way.

Some lose weight because of dental disease, PPID, poor forage quality, pain, parasites, ulcers, chronic disease, or difficulty competing for feed. Others become overweight because they are retired, lightly worked, insulin dysregulated, or still being fed like they are in full work.

Both are problems. A thin senior and an obese senior need very different plans.

3. Is There Metabolic Disease?

Older horses are more likely to have PPID, and some also have insulin dysregulation or equine metabolic syndrome. PPID and EMS can overlap, and knowing insulin status is important for laminitis risk and diet planning. (Center for Equine Health)

This is where “senior feed” can become risky if it is too high in starch and sugar for that horse.

Why Dental Health Matters So Much

Horses chew by grinding forage between large cheek teeth. Over time, teeth wear, shift, fracture, loosen, develop gaps, or become infected. Some senior horses also lose teeth, which makes long-stem hay much harder to process.

Dental disease can cause:

• Slow eating

• Dropping feed

• Quidding, where the horse forms partially chewed balls of hay or feed and drops them

• Weight loss

• Poor coat

• Bad breath

• Excessive salivation

• One-sided nasal discharge

• Facial swelling

• Whole grain or long stems in manure

• Reluctance to eat hard feed

• Colic or choke risk from poorly chewed feed

Merck Veterinary Manual notes that dental conditions are common causes of loss of appetite, weight loss, and poor condition in horses, and that poorly chewed feed can lead to indigestion, colic, or choke. (Merck Veterinary Manual)

AAEP also lists feed loss from the mouth, difficulty chewing, excessive salivation, loss of body condition, large undigested particles in manure, foul odour, nasal discharge, and swelling of the face or jaw as signs that dental problems should be considered. (AAEP)

In practice, the horse that “just eats slowly” is often the one people miss. Slow eating can be a pain sign. It can also be the horse quietly failing to chew enough forage to maintain condition.

How To Tell if a Senior Horse Cannot Manage Hay

Watch them eat.

Not for five seconds while you throw hay and leave. Actually watch.

Concerning signs include:

• Picking through hay but not finishing it

• Dropping hay while chewing

• Wads of wet hay on the ground

• Long stems in manure

• Taking much longer than herd mates to eat

• Losing weight despite feed being available

• Eating grain but avoiding hay

• Packing feed between the cheek and teeth

• Tilting the head while chewing

• Bad breath

• One-sided nasal discharge

• Repeated choke episodes

If a senior horse cannot chew hay properly, the diet needs to change. The solution may be softer leafy hay, chopped forage, soaked hay cubes, soaked hay pellets, soaked beet pulp, or a complete senior feed used as the forage replacement.

The key is that the horse still needs fibre. We are not removing forage from the diet. We are changing the form of the fibre so the horse can actually use it.

What Should a Senior Horse Eat if Their Teeth Are Good?

If the horse has good teeth, good body condition, normal manure, and no metabolic red flags, keep it simple.

A sensible plan may include:

• Good-quality pasture or hay

• Salt

• Clean water

• A ration balancer or vitamin and mineral supplement if forage alone is not balanced

• Concentrate only if needed for calories, protein, or workload

Forage should remain the base of the equine diet. MSD Veterinary Manual recommends that horses receive at least 1.5% to 2% of body weight in forage per day on a dry matter basis, using pasture, hay, haylage, forage cubes, hay pellets, beet pulp, or other high-fibre sources as appropriate. (MSD Veterinary Manual)

For a 500 kg horse, that is roughly 7.5 to 10 kg of forage dry matter per day as a starting point.

That number still needs individual adjustment. An overweight pony, a hard-keeping Thoroughbred, a PPID horse, a donkey, and a retired warmblood are not the same animal wearing different jackets.

What Should a Senior Horse Eat With Mild Dental Wear?

If the horse can still chew but is starting to struggle, you may not need to remove hay completely.

Options may include:

• Softer, leafy hay

• Shorter-stem forage

• Chopped hay

• Soaked hay cubes

• Soaked hay pellets

• Soaked beet pulp without molasses

• A fibre-based senior feed used as part of the ration

This stage is where early adjustment can prevent weight loss.

The mistake is waiting until the horse is thin, quidding badly, or choking before changing the feed form.

If the horse is starting to struggle, soften the diet before the body condition falls off a cliff.

What Should a Senior Horse Eat With Severe Dental Disease?

If a senior horse has missing molars, expired teeth, severe uneven wear, painful dental disease, or repeated choke episodes, long-stem hay may no longer be safe or useful.

These horses often need a soaked complete feed or soaked forage replacement.

Options may include:

• Soaked complete senior feed

• Soaked hay pellets

• Soaked hay cubes

• Soaked beet pulp

• Soaked fibre-based feeds

• Small frequent meals

• Ground-level feeding if safe

• Careful monitoring for choke, weight loss, and feed refusal

Merck notes that forage alternatives can provide roughage for horses with poor dentition, and MSD states that older horses with dental problems may benefit from extruded or soft pelleted feeds while hay should be leafy, good quality, and easy to chew where it is still used. (Merck Veterinary Manual)

If a complete feed becomes the main or only feed source, it should usually be divided into multiple smaller meals rather than fed as one or two large buckets. Merck notes that textured, pelleted, and extruded feeds are generally not intended to be fed free-choice, and if they become the sole nutrition source they should be offered in multiple smaller feedings or alongside suitable forage alternatives such as soaked forage cubes or soaked beet pulp. (Merck Veterinary Manual)

Basically, do not hand a toothless old horse one giant bucket and call it a day. That is not nutrition. That is a carbohydrate ambush with a senior discount.

What About Choke Risk?

Choke in horses means the oesophagus is obstructed, usually by feed material. The horse can often still breathe, but it cannot swallow normally.

This is a genuine veterinary problem.

Signs of choke can include:

• Feed or saliva coming from the nostrils

• Coughing

• Excessive drooling

• Difficulty swallowing

• Gulping

• Stretching or arching the neck

• Anxiety or restlessness

• Feed refusal

• Green or frothy nasal discharge

Merck describes nasal discharge of feed material or saliva, difficulty swallowing, coughing, and excessive salivation as signs of oesophageal obstruction in horses. Affected horses may keep trying to eat or drink, which can worsen the situation. (Merck Veterinary Manual)

If you suspect choke, remove feed and water and call your vet. Do not try to syringe water or oil into the horse. That is a fantastic way to turn a bad situation into aspiration pneumonia.

Senior Horses, PPID, EMS, and Laminitis Risk

Senior horse feeding becomes more complicated when endocrine disease is involved.

PPID, also known as pituitary pars intermedia dysfunction or Cushing’s disease, is common in older horses. Signs may include delayed shedding, a long curly coat, muscle loss along the topline, increased drinking and urination, lethargy, abnormal sweating, recurrent infections, and laminitis. UC Davis notes that approximately 30% of horses with PPID also show signs of insulin dysregulation, and that PPID and EMS can coexist in the same horse. (Center for Equine Health)

EMS is associated with insulin dysregulation, increased regional fat deposits, difficulty losing weight, and high laminitis risk. UC Davis notes that horses with EMS are at high risk for laminitis, especially when given access to pasture or high-carbohydrate feeds. (Center for Equine Health)

This matters because many senior horses need calories, but not all calories are equally safe.

For a thin senior with poor teeth and no insulin dysregulation, a higher-calorie soaked senior feed may be appropriate.

For an overweight senior with a cresty neck, PPID, insulin dysregulation, or a history of laminitis, the priority is usually lower non-structural carbohydrate intake, careful calorie control, forage testing, pasture restriction, and a diet built around safe fibre rather than starch and sugar.

UC Davis describes EMS treatment as dietary management with NSC restriction, calorie restriction, reduced or eliminated pasture access, and exercise when appropriate. It also notes that forage for EMS horses should ideally be below 10% NSC on a dry matter basis. (Center for Equine Health)

So no, you should not just grab any senior feed because the bag has a lovely old horse on it looking wise and emotionally available.

Read the label. Test the horse. Feed the disease risk.

How Much Should a Senior Horse Eat?

Start with body weight, body condition, and forage intake.

Most horses should receive around 1.5% to 2% of body weight in forage dry matter per day, adjusted for the individual. Water needs also rise with dry feeds, heat, work, lactation, and sweating, and unlimited free access to clean water is recommended. (MSD Veterinary Manual)

Then assess:

• Body condition score

• Weight tape or scale weight

• Topline

• Fat pads

• Neck crest

• Dental function

• Manure quality

• Appetite

• Water intake

• Workload

• PPID or EMS risk

• Current hay quality

• Current feed weight, not scoop volume

Feeds should be weighed, not guessed. Merck notes that grain and commercial concentrates should be measured by weight rather than volume because density differs between feeds, and they should be fed according to manufacturer instructions based on body weight and activity level. (Merck Veterinary Manual)

For senior horses, this is especially important. A little too much starch can matter in a laminitis-prone horse. Too little actual feed can matter in a poor doer. Too much dry feed can matter in a choke-prone horse.

The scale is not glamorous, but it is less dramatic than a colic callout.

Risk Framework: How Worried Should You Be?

Low Risk

This is usually lower risk if your senior horse:

• Maintains a healthy body condition

• Chews hay well

• Has normal manure

• Has no quidding

• Has no choke history

• Has no laminitis history

• Has no signs of PPID or EMS

• Has regular dental care

• Eats and drinks normally

• Moves comfortably for their age

This horse may not need major diet changes. Keep monitoring weight, teeth, manure, and comfort.

Moderate Risk

This is more concerning if your senior horse:

• Is slowly losing weight

• Eats more slowly than normal

• Drops some feed

• Quids occasionally

• Has mild topline loss

• Has mild dental wear

• Has intermittent loose manure

• Has reduced hay intake

• Has not had a dental check recently

• Is starting to look cresty or overweight

This is the stage where you should act before the problem becomes obvious. Book a dental exam, weigh the diet, assess body condition, and consider softer forage options.

High Risk

This is high risk if your senior horse:

• Is losing weight despite eating

• Cannot chew hay properly

• Has repeated quidding

• Has long stems or whole grain in manure

• Has repeated choke episodes

• Has poor body condition

• Has a long curly coat or delayed shedding

• Has increased drinking and urination

• Has a cresty neck or regional fat pads

• Has a previous laminitis history

• Has PPID, EMS, or insulin dysregulation

This horse needs a veterinary assessment and a structured feeding plan.

Critical

This is urgent if your senior horse:

• Has suspected choke

• Has colic signs

• Stops eating

• Has severe diarrhoea

• Has sudden laminitis signs

• Cannot walk normally

• Has heat in the hooves or strong digital pulses

• Is severely depressed

• Is losing weight rapidly

• Is very thin

• Has fever, nasal discharge, or breathing difficulty after choke

• Is not drinking

• Has severe weakness or collapse

This is not the time to trial a new feed. This is the time to call the vet.

When Is This an Emergency?

Feeding problems in senior horses become emergencies when they cause or suggest choke, colic, laminitis, severe dehydration, severe weight loss, or systemic illness.

Call a vet urgently if your senior horse has:

• Feed or saliva coming from the nostrils

• Repeated coughing while eating

• Excessive drooling

• Difficulty swallowing

• Pawing, flank-watching, rolling, sweating, or repeated lying down

• Loss of appetite

• Reduced or absent manure

• Severe diarrhoea

• Sudden lameness

• Heat in the feet

• Strong digital pulses

• A rocked-back stance

• Refusal to walk

• Severe depression

• Fever after a choke episode

• Rapid weight loss

MSD lists common colic signs as repeated pawing, looking at the flank, kicking at the abdomen, lying down, rolling, sweating, stretching as if to urinate, straining to defecate, abdominal distension, loss of appetite, depression, and decreased bowel movements. (MSD Veterinary Manual)

Do not wait to see if an older horse “settles overnight” if they have choke, colic, laminitis signs, or stop eating. Older horses have less spare room when things go wrong.

What Else Can Cause Weight Loss in a Senior Horse?

Do not assume weight loss is just age.

Old age is not a diagnosis. It is a context.

Important causes of senior horse weight loss include:

• Dental disease

• Poor forage quality

• Inadequate total calories

• Not enough protein or lysine

• PPID

• Insulin dysregulation

• Gastric ulcers

• Chronic pain

• Arthritis limiting grazing or movement

• Parasites

• Chronic infection

• Liver disease

• Kidney disease

• Cancer

• Inflammatory bowel disease or malabsorption

• Bullying in group feeding

• Difficulty accessing hay or water

• Poor winter management

• Feed not being eaten as expected

• Medication effects

This is why the first response should not be “add more grain.”

Sometimes more calories are needed. Sometimes the teeth need attention. Sometimes the horse has PPID. Sometimes they are being bullied off feed. Sometimes they are painful. Sometimes the hay is dreadful and everyone is pretending it is fine because it was expensive.

A thin senior horse needs investigation, not just a bigger scoop.

What Should You Do Next?

1. Body Condition Score the Horse

Look at the ribs, neck, withers, shoulders, back, and tail head.

Do not judge only by the belly. Older horses can have a hay belly and still be under-muscled or under-conditioned.

2. Weigh the Horse or Use a Weight Tape

A scale is best. A weight tape is less accurate but useful for trends.

Track weight every 2 to 4 weeks if you are actively changing the diet.

3. Book a Dental Examination

Dental health should be assessed regularly in senior horses, especially if there is weight loss, quidding, slow eating, choke, bad breath, or long stems in manure.

Dental problems are much easier to manage before the horse is thin and sore.

4. Watch the Horse Eat

This is simple and incredibly useful.

Watch hay intake, chewing pattern, feed dropping, quidding, speed of eating, and whether the horse avoids certain textures.

5. Weigh the Current Diet

Weigh:

• Hay

• Pellets

• Senior feed

• Ration balancer

• Beet pulp

• Hay cubes

• Chaff

• Oil or fat supplements

• Treats if they are being fed often

You cannot fix a diet you have not measured.

6. Check for PPID, EMS, and Insulin Dysregulation

If the horse is older, losing topline, growing a long coat, drinking more, urinating more, developing laminitis, becoming cresty, or gaining weight strangely, blood testing may be needed.

UC Davis notes that PPID diagnosis is based on clinical signs and diagnostic testing, and that PPID management should include a veterinarian-approved diet and exercise program adjusted for body condition, exercise ability, and insulin status. (Center for Equine Health)

7. Choose the Feed Form Based on Chewing Ability

Use the right texture for the mouth.

• Good teeth: pasture, hay, ration balancer if needed

• Mild dental wear: leafy hay, chopped forage, soaked hay cubes, soaked pellets

• Poor teeth: soaked complete feed, soaked forage pellets, soaked cubes, mash-based diet

• Choke-prone: soaked feeds, slower feeding, small meals, veterinary guidance

• Metabolic risk: low-NSC forage and feeds, pasture control, insulin testing

8. Make Changes Slowly

Unless there is an emergency, make feed changes gradually.

MSD notes that dietary changes should occur slowly over about 10 to 14 days to reduce disruption of microbial balance and digestive upset. (MSD Veterinary Manual)

The hindgut does not enjoy surprise parties.

9. Recheck the Plan

Monitor:

• Weight

• Body condition

• Topline

• Appetite

• Manure

• Water intake

• Hoof comfort

• Energy

• Coat

• Dental comfort

• Choke signs

• Laminitis signs

A senior horse diet is not something you set once and worship forever. It needs adjustment as teeth, seasons, hay batches, health, and workload change.

Common Mistakes Owners Make

Switching to Senior Feed Just Because of Age

Age alone does not decide the feed. Teeth, weight, metabolism, and clinical signs do.

Ignoring Teeth Until the Horse Is Thin

Dental disease often shows subtle signs first. Quidding, slow eating, and dropping feed matter.

Feeding Dry Pellets to a Choke-Prone Horse

Dry pellets, cubes, and beet pulp may be risky in some choke-prone horses. Soaking can make feed softer and increase water intake, but the plan should match the horse’s history.

Choosing a High-Starch Feed for a Laminitis-Prone Senior

A senior horse with PPID, EMS, insulin dysregulation, or previous laminitis usually needs a careful low-NSC plan, not a random calorie-dense feed.

Overfeeding an Easy Keeper Because They Are Old

Some older horses still gain weight easily. Senior does not automatically mean skinny.

Underfeeding a Toothless Horse Because Hay Is Available

Hay in the paddock does not help if the horse cannot chew it.

Forgetting Protein Quality

Some senior horses lose topline because they need better quality protein and amino acids, not just more calories.

Treating Weight Loss With Oil Alone

Oil can add calories, but it does not fix dental disease, PPID, parasites, ulcers, chronic pain, poor forage, or inadequate protein.

How To Prevent Senior Horse Feeding Problems

Prevention is mostly about paying attention early.

Focus on:

• Regular dental checks

• Body condition scoring every 2 to 4 weeks

• Weight tracking

• Watching the horse eat

• Weighing feed and hay

• Testing hay when metabolic disease is a concern

• Adjusting texture before weight loss becomes severe

• Using soaked feeds when chewing or choke risk requires it

• Splitting meals into smaller feeds

• Avoiding sudden diet changes

• Monitoring for PPID signs

• Testing insulin status when laminitis risk is present

• Keeping water clean and easy to access

• Ensuring older horses are not bullied off feed

• Maintaining regular farrier care

• Keeping older horses moving safely if sound

AAEP’s senior horse guidance makes the simple but important point that proper nutrition, care, and exercise help older horses thrive. (AAEP)

The goal is not just keeping an old horse alive. The goal is keeping them comfortable, functional, and able to enjoy their days.

Will My Senior Horse Be Okay?

Many senior horses do extremely well with the right management.

If the horse is bright, eating, maintaining condition, chewing well, passing normal manure, moving comfortably, and showing no signs of PPID, EMS, choke, colic, or laminitis, the outlook is generally good.

If the horse is losing weight, quidding, choking, becoming cresty, developing laminitis, struggling to chew, or changing behaviour, the plan needs to change.

The good news is that many problems are manageable when caught early. Dental work, soaked feeds, forage alternatives, PPID treatment, pasture control, and a better feeding structure can make a huge difference.

The biggest mistake is dismissing change as “just old age.”

Old age does not mean ignore it. It means investigate sooner.

FAQs

At what age is a horse considered senior?

Many people use 15 to 20 years as a general senior range, but age alone is not enough. A 22-year-old horse with good teeth and body condition may need fewer diet changes than a 15-year-old horse with PPID, poor teeth, and weight loss.

Does my senior horse need senior feed?

Not always. If your horse has good teeth, healthy weight, and no major medical issues, good forage plus a balanced vitamin and mineral source may be enough. Senior feed is most useful when chewing ability, weight maintenance, or digestibility becomes a problem.

What should I feed an old horse with bad teeth?

Horses with poor teeth may need soaked hay cubes, soaked hay pellets, chopped forage, soaked beet pulp, or a soaked complete senior feed. The goal is to provide enough fibre and calories in a form the horse can chew and swallow safely.

Should senior horses avoid sugar and starch?

Some should. Senior horses with EMS, insulin dysregulation, PPID with high insulin, obesity, a cresty neck, or laminitis history usually need a lower NSC diet. Horses without metabolic risk may tolerate more flexible diets, but starch and sugar should still be matched to workload and health status.

Why is my senior horse losing weight even though they are eating?

Common causes include dental disease, poor forage quality, inadequate calories, PPID, parasites, ulcers, chronic pain, malabsorption, liver or kidney disease, or competition from other horses. Weight loss in a senior horse should be investigated rather than dismissed as normal aging.

Final Thoughts

Feeding a senior horse properly starts with one simple truth:

Senior horses are individuals.

Some need very little change. Some need a completely different diet. Some need soaked complete feed because their teeth can no longer handle hay. Some need low-NSC diets because PPID, EMS, insulin dysregulation, or laminitis risk changes everything.

The safest feeding plan is not the one with the prettiest bag or the loudest stable opinion. It is the one built around the horse’s mouth, body condition, metabolic status, forage intake, and actual clinical signs.

Age does not decide the diet.

The horse does.

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If you are unsure whether your senior horse needs hay, soaked feed, a complete feed, dental care, PPID testing, or a lower-starch diet, ASK A VET™ can help you work through the signs and decide what needs attention before a small feeding issue becomes a bigger health problem.