When people imagine feeding a horse, they often picture a bale of hay tossed over a fence or a scoop of grain poured into a feed bucket. But proper horse nutrition is far more important — and far more complex — than many people realise.
A horse’s diet directly affects:
- Energy levels
- Weight
- Hoof quality
- Digestion
- Behaviour
- Muscle development
- Immune function
- Long-term health
Feeding horses correctly is one of the biggest responsibilities of horse ownership. And unfortunately, poor nutrition remains one of the most common issues seen in neglected and surrendered horses across Australia.
At Horse Shepherd, many rescued horses arrive underweight, malnourished, dehydrated, or suffering from the long-term effects of incorrect feeding. Rehabilitation often begins with something simple but critical: restoring proper nutrition safely and gradually.
If you’re wondering what horses eat, how often they should be fed, or how to create a healthy feeding routine, this guide will walk you through everything you need to know.
What Do Horses Naturally Eat?
Horses are herbivores and natural grazers.
In the wild, horses spend the majority of their day slowly grazing on grasses and forage. Their digestive systems are specifically designed for continuous small meals rather than large, infrequent feeds.
A horse’s stomach is surprisingly small compared to its overall body size. Because of this, horses digest food best when they have regular access to forage throughout the day.
The foundation of a healthy horse diet should almost always be:
- Grass pasture
- Hay
- Forage-based feeds
This fibre-rich diet supports:
- Healthy digestion
- Gut bacteria balance
- Reduced stress
- Natural chewing behaviour
- Stable energy levels
Unlike humans, horses cannot go long periods without food comfortably. Extended fasting can increase the risk of digestive issues and behavioural stress.
The Core Components of a Horse’s Diet
Every horse is different, but most diets are built around several key nutritional components.
1. Forage: The Most Important Part of a Horse’s Diet
Forage should make up the majority of what a horse eats.
This includes:
- Fresh pasture grass
- Hay
- Chaff
- Haylage in some situations
Most healthy horses require roughly 1.5–2% of their body weight in forage daily.
For a 500kg horse, that often means:
- 7.5–10kg of forage every day
Hay becomes especially important during:
- Drought conditions
- Winter
- Poor pasture growth
- Rehabilitation periods
Common Types of Hay in Australia
Horse owners commonly feed:
- Lucerne hay
- Oaten hay
- Meadow hay
- Rhodes grass hay
Each has different nutritional values and suitability depending on the horse’s age, workload, and health.
For example:
- Lucerne is high in protein and energy
- Meadow hay is often lower in calories
- Oaten hay is popular for general feeding
Choosing the right forage matters.
2. Hard Feed and Concentrates
Some horses require additional feed beyond pasture and hay.
This is especially true for:
- Performance horses
- Growing horses
- Older horses
- Pregnant mares
- Underweight rescue horses
Hard feeds may include:
- Pellets
- Grain mixes
- Beet pulp
- Bran
- Commercial horse feeds
However, many horses are actually overfed concentrates and underfed forage.
Too much grain can increase the risk of:
- Colic
- Laminitis
- Behavioural issues
- Digestive upset
This is why balanced feeding is so important.
At horse sanctuaries, rescue horses often require specialised feeding programs because malnutrition must be corrected carefully. Feeding too much too quickly can actually become dangerous in severely underweight horses.
3. Vitamins and Minerals
Even horses eating plenty of hay may still lack important nutrients.
Depending on pasture quality and location, horses may require:
- Salt
- Mineral supplements
- Electrolytes
- Joint supplements
- Vitamin support
Australian soils vary significantly in mineral content, which can affect pasture nutrition.
Some horses may also require:
- Biotin for hoof health
- Magnesium support
- Omega fatty acids
- Digestive supplements
It’s always best to consult a veterinarian or equine nutritionist before introducing major supplements.
4. Fresh Water
Water is absolutely essential.
A horse can drink:
- 25–55 litres of water daily
- Even more during summer or exercise
Without adequate water intake, horses are at higher risk of:
- Dehydration
- Colic
- Heat stress
- Poor digestion
Fresh, clean water should always be available.
One of the first things rescue organisations monitor when rehabilitating neglected horses is hydration status, especially during hot Australian summers.
How Often Should Horses Be Fed?
Because horses are designed to graze continuously, feeding routines should aim to mimic natural grazing as much as possible.
General Feeding Guidelines
Most horses do best with:
- Constant access to pasture or hay
- Multiple small meals rather than one large feed
- Consistent feeding times
Many owners feed:
- Morning forage/feed
- Evening forage/feed
- Free access to hay where possible
Large grain-heavy meals can increase digestive risks because horses are not built to process large starch loads quickly.
What Should Horses NOT Eat?
Many common human foods can be dangerous for horses.
Foods to Avoid Feeding Horses
Never feed horses:
- Chocolate
- Avocado
- Garlic in large amounts
- Onions
- Bread in excess
- Mouldy hay or feed
- Lawn clippings
- Excess sugary treats
Some plants commonly found in Australian paddocks can also be toxic.
These include:
- Ragwort
- Oleander
- Certain weeds and ornamental plants
Mouldy or poor-quality hay is another major risk and can lead to respiratory problems and illness.
Signs a Horse May Have Poor Nutrition
Good nutrition shows in a horse’s overall condition.
Signs of a healthy horse often include:
- Bright eyes
- Healthy coat shine
- Good hoof condition
- Stable weight
- Calm energy
- Healthy muscle tone
Warning Signs of Poor Nutrition
Poor feeding or malnutrition may cause:
- Visible ribs or spine
- Dull coat
- Weight loss
- Poor hoof quality
- Lethargy
- Digestive problems
- Aggression around food
- Muscle wastage
Many rescued horses arriving at sanctuaries display several of these signs simultaneously.
Some have gone weeks or months without adequate nutrition.
Others may have been fed incorrectly for years.
Rehabilitation takes time, patience, veterinary support, and significant resources.
Feeding Older Horses
Senior horses often have different nutritional needs.
Older horses may struggle with:
- Dental issues
- Weight maintenance
- Digestive efficiency
- Arthritis
- Reduced appetite
As horses age, they may require:
- Softer feeds
- Higher-calorie forage
- Additional supplements
- Smaller, more frequent meals
Many sanctuary horses are elderly horses needing specialised long-term feeding support.
Caring for aging horses can become expensive, especially when veterinary care and specialised diets are involved.
Feeding Underweight Rescue Horses
One of the most misunderstood areas of horse care is feeding severely underweight horses.
People often assume a starving horse simply needs large amounts of food immediately.
But refeeding must be done carefully.
Sudden overfeeding can create dangerous metabolic complications.
Rescue horses often require:
- Controlled feeding plans
- Veterinary supervision
- Slow calorie increases
- High-fibre rehabilitation diets
- Constant monitoring
Recovery can take months.
At Horse Shepherd, rehabilitation programs focus not just on weight gain, but on rebuilding long-term health safely and compassionately.
Common Feeding Mistakes Horse Owners Make
Even well-meaning horse owners sometimes make mistakes.
1. Feeding Too Much Grain
Many horses receive far more concentrated feed than they actually need.
Excess grain can contribute to:
- Laminitis
- Obesity
- Behavioural problems
- Digestive disorders
2. Not Feeding Enough Forage
Forage should always remain the foundation of the diet.
Long periods without forage can increase stress and digestive risk.
3. Sudden Feed Changes
Changing feed abruptly can disrupt the horse’s gut bacteria and lead to colic or digestive upset.
Feed changes should always happen gradually.
4. Poor Quality Hay
Dusty, mouldy, or nutrient-poor hay can create serious health issues.
5. Ignoring Weight Changes
Some owners fail to notice gradual weight loss or obesity until health problems become severe.
Routine body condition checks are important.
How Much Does It Cost to Feed a Horse in Australia?
Feeding costs vary significantly depending on:
- Location
- Drought conditions
- Hay prices
- Horse size
- Nutritional needs
In Australia, feed costs can easily reach:
- Thousands of dollars annually per horse
During drought periods, hay prices can increase dramatically.
This financial pressure is one reason some horse owners unfortunately struggle to provide adequate care.
Horse rescue organisations often face enormous feed bills caring for multiple horses requiring rehabilitation.
Why Horse Nutrition Matters So Much
Good feeding isn’t just about maintaining weight.
Proper nutrition supports:
- Long-term health
- Emotional wellbeing
- Recovery from trauma
- Performance
- Longevity
- Quality of life
And for rescued horses, nutrition can mean the difference between survival and suffering.
At Horse Shepherd, many horses arrive frightened, neglected, and physically depleted. Feed and rehabilitation are among the first steps in helping them regain trust, strength, and health.
But caring for rescued horses requires ongoing community support.
Help Feed Rescued Horses
Every bale of hay, feed bucket, and rehabilitation plan makes a difference.
Your support helps provide:
- Nutritious feed
- Hay and forage
- Veterinary care
- Rehabilitation programs
- Safe long-term sanctuary
For many rescued horses, proper nutrition becomes the first step toward recovery and a second chance at life.
If you’d like to help horses in need, consider supporting Horse Shepherd through donations, sponsorship, volunteering, or sharing their mission.
You can also learn more about horse rehabilitation, rescue stories, and the ongoing work involved in caring for vulnerable horses across Australia.