Do Horses Eat Grass?

As herbivores, horses require a diet rich in fibre and plant matter. The grass is a staple among the most common types of food that horses consume. But do horses eat grass exclusively? And how much grass should they be eating daily? This article will delve into the subject of horse nutrition and provide an answer to the inquiry, “Do horses eat grass?”

Horses hold a special place in our culture and history as one of the most recognizable creatures in the world. For centuries, we have utilized horses for transportation, agriculture, and sports. However, although we are familiar with horses’ roles, we may need to become more acquainted with their nutritional requirements. This article aims to examine the subject of horse nutrition, with a particular focus on the query of whether horses consume grass.

Horse Nutrition Basics

Before answering whether horses eat grass, we need to understand the basics of horse nutrition. Like all creatures, horses require a balanced diet to stay healthy and thrive. A balanced diet for horses includes protein, fibre, carbohydrates, vitamins, and minerals.

The Role of Fiber

Fiber is a crucial nutrient for horses as it plays a significant role in maintaining their digestive system’s health. Horses are hindgut fermenters, meaning fibre is broken down in their large intestine with the help of microorganisms. The process of fermentation produces volatile fatty acids, which provide horses with energy.

Protein Needs

Protein is another essential nutrient for horses. It is required to grow, maintain, and repair body tissues. Horses need around 10-12% protein, depending on age, activity level, and reproductive status.

Carbohydrate Requirements

Horses primarily derive their energy from carbohydrates. They are broken down into glucose, fueling the muscles and other organs. Nonetheless, horses have comparatively limited carbohydrate tolerance compared to other animals, making them susceptible to digestive issues like colic and laminitis. As such, feeding horses a balanced diet that includes fibre and carbohydrates is important.

Grass as a Source of Nutrition

Now that we have covered the basics of horse nutrition, let’s turn our attention to whether horses eat grass. The short answer is yes, and horses do eat grass. The grass is one of the most important components of a horse’s diet.

Nutritional Value of Grass

Grass is an excellent source of fibre and carbohydrates for horses. It is also relatively high in protein compared to other forages, such as hay. In addition, grass contains essential vitamins and minerals that horses need to stay healthy.

Horse Nutrition Basics

How Much Grass Should Horses Eat?

Horses should eat between 1.5 and 2.5 percent of their total weight in forage each day, which translates to 15 to 25 pounds of forage per day for a 1,000-pound horse. This includes all forages, not just grass. However, a horse’s recommended daily intake of grass varies depending on their age, degree of activity, and general health.

Other Foods Horses Consume

A horse’s diet must include vegetation, but it is not their only source of nutrition. Here are some other foods that horses may eat:


Hay is a type of dried grass or legume commonly fed to horses. It is a good source of fibre and can be used to supplement a horse’s diet when the grass is unavailable or during the winter months when it is dormant. Hay can vary in quality, so choosing a type of hay appropriate for a horse’s age, activity level, and nutritional needs is important.


Grain is another food that horses may consume but should be fed in moderation. Although grain is rich in carbohydrates, it has low fiber content, which may cause digestive problems in horses. Overfeeding grain to horses can result in weight gain and potentially cause other health issues.


In addition to grass, hay, and grain, horses may also consume supplements to meet their nutritional needs. The vitamins, minerals, and other nutrients that may be lacking in a horse’s nutrition can be found in supplements. It is advisable to seek guidance from a veterinarian or equine nutritionist before introducing supplements to a horse’s diet, as excessive amounts of certain nutrients can be detrimental.

Other Food That Horses Consume Than Grass

Different Types of Grasses Suitable for Horses

Different Types of Grasses Suitable for Horses:

Timothy Grass

Timothy grass is one of the most commonly used grasses for horse feed, as it is low in protein and fibre, making it easy for horses to digest. It is an excellent option for horses that are sensitive to high-sugar grasses.

Bermuda Grass

Bermuda grass is a popular option for horse pastures, as it is drought-resistant and grows well in hot climates. It is also high in protein, which can benefit horses that need to gain weight.

Orchard Grass

Orchard grass is versatile, can be grown in many different climates, and is known for its high nutrient content. It is a great option for horses that require a high-energy diet.

Kentucky Bluegrass

Kentucky bluegrass is a dense, durable grass that is excellent for pastures and can help prevent soil erosion. It is also a good option for horses that require a low-sugar diet.

Fescue Grass

Fescue grass is another popular option for horse pastures, as it is hardy and can withstand heavy grazing. It is a great option for horses that need to gain weight, as it is high in protein and fibre.

Different Types of Grasses Suitable for Horses

Common Grass-Related Health Issues in Horses

Common grass-related health issues in horses include colic, laminitis, and grass allergies. Colic is a general term used to describe digestive problems in horses, and it can be caused by consuming too much lush green grass too quickly.

Laminitis is a condition that affects a horse’s hooves and can be caused by consuming high-sugar grasses. Grass allergies can cause a horse to have skin irritations, respiratory issues, or even anaphylactic shock.

Horse owners must be aware of these grass-related health issues and take steps to prevent them, such as gradually introducing new grasses to a horse’s diet, managing pasture time, and consulting with a veterinarian if any symptoms arise. Ensuring that horses have access to healthy, suitable grazing and managing their grass intake can go a long way in keeping them healthy and happy.

Common Grass-Related Health Issues in Horses


Grass is a crucial component of a horse’s diet, and they consume it regularly. It provides horses with fibre, carbohydrates, protein, and essential vitamins and minerals. However, horses also consume other foods such as hay, grain, and supplements to meet their nutritional needs. It is important to feed horses a balanced diet that includes a variety of forages and supplements when necessary.


Can horses eat too much grass?

Yes, horses can eat too much grass, leading to health problems such as colic and laminitis. Monitoring a horse’s grass intake and limiting it if necessary is important.

What type of grass is best for horses to eat?

Horses can eat a variety of grasses, but some types are better than others. Bermuda grass, timothy grass, and orchard grass are all good options for horses.

Can horses survive on grass alone?

While horses can stay on grass alone, it is not recommended. Grass does not provide all the nutrients that horses need, and a grass-based diet may lead to nutritional deficiencies.

How often should horses be fed?

Horses should be fed several small meals throughout the day rather than one or two large meals. This helps prevent digestive issues and keeps horses healthy.

What are the signs of nutritional deficiencies in horses?

Signs of nutritional deficiencies in horses include dull coats, weight loss, poor appetite, and decreased energy levels. If you believe your horse may be nutritionally deficient, it is imperative to consult a veterinarian or equestrian nutritionist.

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