Advances in nutrition, veterinary care and management mean horses are living longer than ever before. Many horses remain healthy and active well into their twenties and beyond, but ageing does bring nutritional challenges that require special attention.
Contrary to popular belief, healthy older horses do not automatically lose their ability to digest feed. However, age-related changes such as dental wear, reduced ability to maintain muscle mass, chronic health conditions and altered energy requirements can make meeting nutritional needs more difficult.
Understanding these changes can help owners make informed feeding decisions that support body condition, comfort and quality of life.
What Changes as Horses Age?
Every horse ages differently, but common age-related changes include:
Worn, loose or missing teeth
Reduced muscle mass
Increased risk of PPID (Cushing's disease)
Osteoarthritis and chronic pain
Changes in appetite or feed intake
Greater difficulty maintaining body condition
Reduced mobility and altered herd behaviour
These factors often have a greater impact on nutritional status than age itself.
As Pryde's Equine Nutritionist Bethanie Gagliardi explains:
"Many senior horses can continue thriving on well-balanced diets, but early recognition of age-related changes is critical. Small declines in body condition, eating behaviour or muscle mass are often the first signs that a horse's feeding program needs adjustment."
Start With Body Condition
One of the most important indicators of nutritional adequacy in an older horse is body condition. Unexplained weight loss should never be dismissed as a normal consequence of ageing.
Potential causes include:
Dental disease
Inadequate energy intake
Chronic pain
Parasitism
PPID
Poor forage availability
Competition from younger horses
Underlying illness
Regularly monitoring body condition score and body weight trends can help identify problems before significant weight loss occurs.
Dental Health: The Foundation of Nutrition
Chewing is the first step in digestion.
As horses age, teeth become shorter, wear unevenly and may loosen or be lost completely. Poor dental function reduces chewing efficiency, making it harder to process forage effectively.
Common signs of dental problems include:
Weight loss
Dropping partially chewed feed (quidding)
Slow eating
Choke
Feed material in manure
Bad breath
Routine dental examinations every 6 to 12 months are particularly important for senior horses.
Fibre Remains the Cornerstone
Regardless of age, fibre should remain the foundation of the equine diet.
Most horses should receive a minimum of 1.5-2% of body weight per day as forage (dry matter basis), with many benefiting from 2% or more depending on their individual needs, workload and body condition.
Suitable fibre sources include:
Pasture
Grass hay
Lucerne hay
Chaff
Soaked hay cubes
Beet pulp
Lupin hulls
Copra meal
High-fibre pelleted feeds
Maintaining adequate fibre intake supports digestive health, encourages chewing and helps maintain hindgut function.
Supporting Horses With Dental Challenges
The goal is not necessarily to remove forage, but to ensure fibre requirements continue to be met using forms the horse can comfortably consume.
For horses with mild dental issues:
Use softer, leafy hays
Increase chaff intake
Include highly digestible fibre sources
Feed nutrient-dense feeds such as Pryde’s OldTimer or EasiConditioner where appropriate
For horses with severe dental compromise:
Replace some or all long-stem forage with:
Soaked hay cubes
Soaked beet pulp
Fibre pellets such as EasiFibre
Complete senior feeds
Soft fibre mashes
Provide a nutrient dense soakable feed such as Pryde’s EasiConditioner or BioMare Cubes.
These alternatives can help maintain fibre intake without compromising chewing comfort.
Protein Becomes Increasingly Important
One of the most significant nutritional changes associated with ageing is a reduced ability to maintain muscle mass.
Older horses often benefit from diets containing high-quality protein sources rich in essential amino acids.
Good protein sources include:
Lucerne
Soybean meal
Quality commercial senior feeds
Lupins
Maintaining adequate protein intake supports topline, muscle condition and overall functionality.
When evaluating senior horses, loss of muscle mass may be a more important indicator than body weight alone.
Managing PPID and Metabolic Concerns
Senior horses have a higher incidence of Pituitary Pars Intermedia Dysfunction (PPID), commonly known as Cushing's disease. Some older horses may also develop insulin dysregulation, increasing the risk of laminitis.
For these horses:
Prioritise low NSC forage sources (<10% NSC)
Limit access to high-sugar pasture when necessary
Consider soaking hay where appropriate
Choose low-starch, high-fibre feeds such as Pryde’s EasiSport
Work closely with a veterinarian to monitor the condition
Nutritional management should always be based on the individual horse rather than age alone.
Every Senior Horse Is Different
There is no single feeding program that suits every older horse.
A successful senior nutrition plan should consider:
Dental health
Body condition
Muscle mass
Activity level
Forage intake
Medical conditions
Social environment
Regular assessment and early intervention are often the key factors that allow horses to remain healthy and comfortable throughout their later years.
Professional Insight
Bethanie Gagliardi says:
"One of the biggest misconceptions about senior horses is that ageing automatically causes poor digestion. While some horses require dietary modifications, factors such as dental health, muscle maintenance, chronic disease and overall management often have a much greater influence on nutritional status than age alone."
FAQs
Do older horses digest fibre less efficiently?
Healthy older horses often maintain fibre digestion comparable to younger adult horses. However, dental problems, disease and reduced feed intake can compromise overall nutritional status.
Why do senior horses lose muscle?
Age-related muscle loss is common and may be influenced by reduced activity, inadequate protein intake, chronic disease or PPID.
How often should senior horses receive dental care?
Most senior horses should receive a dental examination every 6 to 12 months.
What is the best fibre source for older horses?
The best choice depends on dental function, but pasture, hay, chaff, beet pulp, soaked hay cubes and other highly digestible fibre sources are commonly used.
Should all senior horses receive a senior feed?
Not necessarily. Many senior horses maintain condition well on standard feeding programs. Diet changes should be based on individual needs rather than age alone.
What's the most important thing to monitor?
Body condition, muscle mass, dental health and changes in eating behaviour are among the most valuable indicators of nutritional wellbeing.