Horse Haylage vs. Hay: Which Forage Actually Wins?

Deciding on the best forage for your horses is a critical part of equine management, and the choice between traditional hay and horse haylage often sparks lively debate among owners. Both offer essential nutrition, but they differ significantly in their production, preservation, and suitability for various types of horses. Understanding these distinctions is key to ensuring your horses receive the optimal diet for their health and performance.

What Exactly is Horse Haylage?

Horse haylage is essentially a fermented forage product, somewhere between hay and silage. It’s made from grass that is cut at an earlier stage of maturity than hay, allowed to wilt for a shorter period, and then tightly wrapped in several layers of plastic. This creates an anaerobic (oxygen-free) environment, promoting fermentation by beneficial bacteria. This process preserves the nutrients in the grass and prevents spoilage, offering a dust-free and highly palatable feed source.

The wilting period is crucial. Too short, and the haylage can be too wet, leading to an undesirable fermentation and potential for harmful bacteria. Too long, and it might not ferment properly, increasing the risk of mold. The aim is to achieve a dry matter content typically between 50% and 70%, which distinguishes it from the much wetter silage (around 30-50% dry matter) often fed to cattle.

The fermentation process produces lactic acid, which lowers the pH of the haylage, inhibiting the growth of spoilage organisms like mold and yeast. This preservation method makes horse haylage a popular choice, especially in areas with unpredictable drying weather, as it reduces dependence on long periods of sunshine needed for haymaking.

The Production Process: Hay vs. Horse Haylage

The fundamental differences between hay and horse haylage begin in the field. Traditional hay production relies on sun-drying cut grass until its moisture content drops below 15-20%. This typically requires several days of continuous dry, sunny weather, during which the grass is cut, crimped, and turned regularly to ensure even drying. Once dry, it’s baled and stored under cover to prevent re-wetting and spoilage.

Horse haylage, on the other hand, is cut and wilted for a much shorter period, usually 12-48 hours, until it reaches the desired dry matter content. It’s then baled and immediately wrapped in multiple layers of plastic film. This airtight seal is vital for initiating the anaerobic fermentation that preserves the forage. The rapid baling and wrapping process makes haylage less weather-dependent than hay, offering a more reliable harvesting option in changeable climates.

Each method has its environmental and practical considerations. Hay production is generally more energy-intensive due to repeated turning and longer field time, but requires no plastic. Haylage production uses less field time but relies heavily on plastic wrap, which raises concerns about plastic waste and recycling.

Nutritional Content and Digestibility

When comparing the nutritional profiles, horse haylage often comes out ahead in terms of energy and protein, especially if made from younger, less mature grass. The shorter wilting period means fewer nutrients are lost through respiration during drying, and the fermentation process can enhance digestibility for some horses.

• Energy: Haylage generally provides more digestible energy than hay. This can be beneficial for horses with high energy demands, such as performance horses, broodmares, or young stock, allowing for a reduction in hard feed.
• Protein: Depending on the grass type and stage of maturity, haylage can have a higher crude protein content than mature hay.
• Moisture: Haylage has a higher moisture content (typically 30-50%) compared to hay (10-15%). This means that to provide the same amount of dry matter, a horse needs to consume a greater weight of haylage.
• Vitamins & Minerals: The preservation method of haylage can lead to better retention of certain vitamins, particularly Vitamin E, which is often degraded by prolonged sun exposure in hay production.
• Digestibility: The fermentation process can predigest some of the plant fibers, making haylage highly digestible and palatable for horses, potentially reducing the risk of impaction colic in some cases.

However, the nutritional content can vary widely based on grass species, maturity at cutting, harvesting conditions, and fermentation quality. It’s always advisable to have both your hay and horse haylage analyzed to understand their precise nutritional values and to formulate a balanced diet for your animals. Detailed information on forage analysis can be found on Wikipedia.

Health Considerations: Advantages and Disadvantages

The health implications of feeding horse haylage are a significant factor for many owners. One of the primary advantages is its reduced dust and mold spore content compared to hay. This makes haylage an excellent choice for horses with respiratory issues such as recurrent airway obstruction (RAO), chronic obstructive pulmonary disease (COPD), or allergies.

However, the higher moisture content and fermentation process of haylage also present potential challenges:

• pH and Gut Health: The acidic nature of haylage can be a concern for some horses, particularly those prone to gastric ulcers. While most horses adapt well, careful introduction and monitoring are essential. Feeding hay alongside haylage or using gastric supplements can help balance the gut pH.
• Botulism: Although rare, inadequate fermentation or contamination during the baling process can lead to the growth of Clostridium botulinum, which produces toxins causing botulism. Ensuring proper baling and storage practices, as well as using reputable suppliers, minimizes this risk.
• Storage and Spoilage: Once opened, haylage bales must be consumed relatively quickly (typically within 3-7 days, depending on ambient temperature) to prevent aerobic spoilage, which can lead to mold and yeast growth. This means larger bales might not be suitable for single horses or very small yards.
• Sugar Content: While fermentation can reduce water-soluble carbohydrates (WSC), some haylage can still be high in sugars, which might be a concern for laminitic or insulin-resistant horses. Again, forage analysis is crucial here.

In contrast, well-made hay offers a reliable, low-moisture forage that is generally less acidic. However, even the best hay can contain dust and mold spores, which may necessitate soaking for horses with respiratory sensitivities. Knowing the source and quality of your hay is just as important as with haylage.

Practicalities of Feeding and Storage

The practical aspects of feeding and storing horse haylage differ considerably from hay. Due to its higher moisture content, horses generally eat more haylage by weight than hay to achieve the same dry matter intake. This needs to be factored into feeding plans and budgeting.

Storage of unopened haylage bales requires care to prevent damage to the plastic wrap, which would compromise the anaerobic environment and lead to spoilage. Bales should be stored on a clean, level surface, away from rodents or sharp objects. Once a bale is opened, air exposure begins, and the clock starts ticking for consumption. This often means buying smaller bales or using haylage quickly, especially in warmer weather.

Hay, on the other hand, is much more forgiving in terms of open storage. Once baled and dry, it can be kept for long periods if stored in a dry, well-ventilated area, protected from the elements. This makes it a more convenient option for many horse owners, particularly those with smaller herds or limited storage facilities.

Consider your horse’s individual needs, your stable setup, and your management capabilities when choosing between these forage types. If you’re looking for quality forage options, explore the hay bales shop at Hay Hub for a wide selection.

Making the Right Choice for Your Equine

Ultimately, the decision between traditional hay and horse haylage depends on a variety of factors unique to your situation. There’s no single “best” option; rather, it’s about what works best for your specific horses, your facilities, and your budget.

• For horses with respiratory issues: Haylage is often the preferred choice due to its low dust and mold spore content.
• For performance horses or those needing extra calories: The higher energy content of haylage can be a significant advantage.
• For horses prone to gastric ulcers or metabolic conditions: Traditional hay, or a carefully selected and analyzed haylage, might be more appropriate. Always consult with a veterinarian or equine nutritionist.
• For convenience and long-term storage: Hay generally offers more flexibility.
• For consistent quality in unpredictable weather: Haylage production can be a more reliable option for forage producers.

Many owners successfully incorporate both into their feeding regimes, perhaps feeding haylage in winter and hay in summer, or using haylage as a supplement to hay. Regular forage analysis for both hay and haylage is invaluable in making informed dietary decisions and ensuring your horses receive balanced nutrition.

Choosing the right forage is one of the most important decisions you’ll make for your horse’s health and well-being. By understanding the distinctions between hay and horse haylage, you can make an informed choice that supports their optimal health and performance. For more detailed insights and advice on equine nutrition and forage, visit our hay guides.

Ready to provide your horse with the finest forage? Explore our selection of high-quality hay and haylage options at the Hay Hub shop today and find the perfect match for your equine companion.