Horses are more often given hay or haylage feed, even though the type of feed is grass or forage. However, grass silage for horses becomes an option when the horse breeder cannot dry the grass on time. This is because the drying process is an essential factor in making hay. Thus, the weather becomes a determining factor of hay quality. Therefore, silage can be used as an alternative to retaining valuable forage. The silage manufacturing process is based on the conversion of plant or grass sugars to lactic acid. The next question arises, what kind of silage is good for horses?
Horses are raised to be ridden, so there is no need to produce milk or meat. Thus, horse fodder should not contain an excessive amount of energy but must have sufficient fiber. Therefore, silage for horses must have a high fermentation quality with a combination of excellent feed hygiene.
The composition of molds, yeasts, and other unwanted microbes present in the silage should be as low as possible so as not to affect the health of the horse. Silage does not contain dust, unlike hay and haylage. Thus, silage is suitable to be given as feed for several types of horses, even horses that are sensitive to dust, and these conditions will have a positive impact on health.
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How to Make Good Silage for Horses
For horse feed, high-quality silage is just as nutritious as good hay. However, the feed value depends on the composition of the grass and feed constituents. Silage that will be given to horses usually uses grass that is cut more slowly than silage grass for cattle. This results in significantly higher fiber content with a lower amount of energy. Forages that are poorly compacted and too dry will not ferment enough. Once opened, the bale will quickly be exposed to fresh air so that oxygen can trigger the growth of mold and other unwanted microbes. Silage will rot and heat up quickly. So, it is important to do proper baling with good quality wrapping.
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Characteristics of Good Silage for Horses
Those of you who want to give grass silage for horses need to pay attention to the following characteristics of good silage for horses:
- Silage for horses has a rather moderate energy content with a fairly low fructan content.
- Fresh green or greenish-brown in color.
- Silage has a pleasant odor, is not musty, and does not burn.
- Silage has a fairly good fiber content so that it can maintain the horse’s digestive system.
- Use grass or forage with low soil contamination.
- Consider long aerobic stability, even after opening the bales to feed the horses.
Sward should not be cut too late to maintain aerobic stability. Use a well-maintained harvesting machine. The fructan content in horse feed should be low. In silage, the sugar content in plants or forage will be converted into lactic acid by lactic acid bacteria. It is necessary to analyze whether the fermentation process in the silage is going well or not, because only a small part of the original amount of fructans is detected in the silage.
In making silage, it is necessary to pay attention to the main principles. Early cutting and the wilting process have a positive influence on the fermentation process. When the fermentation process is not complete, remaining sugar will stay in the silage. One of them is fructan, which can harm horse health. Horse fodder should therefore contain grass species that are low in fructose to avoid the problem of laminitis.
Comparison: Hay vs Haylage vs Grass Silage for Horses
Each type of forage has different characteristics that affect suitability for horse feeding. The table below helps breeders choose the right option based on their conditions.
| Feed Type | Moisture Level | Fermentation | Dust Level | Best Used When |
|---|---|---|---|---|
| Hay | Low (below 15%) | None | High | Dry weather allows full field drying |
| Haylage | Medium (40-55%) | Partial | Low | Weather is unpredictable, partial wilting achieved |
| Grass Silage | High (60-75%) | Full anaerobic | None | Wet conditions, full fermentation required |
Tips for Giving Silage to Horses
In giving grass silage for horses, it is necessary to pay attention to several tips, including:
- Harvest on time to make horse feed silage. Do not harvest late to avoid compaction and heating.
- Avoid cutting the sward too deep to prevent contamination with soil.
- Avoid excessive wilting of forage plants.
- Use silage additives when necessary to prevent aerobic damage or even butyrate fermentation.
- Handle baled silage with care.
- Avoid injury to stretch film.
- Give horse feed bales as soon as possible after opening.
There are several tips to consider when giving grass silage for horses. First, make sure the meadow does not contain varieties of grass that are too rich in energy. Be sure to harvest on time to avoid problems with compaction and heating. Do not cut the sward too deep to prevent contamination with soil and avoid excessive wilting.
You can use silage additives if needed to prevent aerobic damage or even butyrate fermentation. Handle baled silage with care and avoid any possibility of injury to the stretch film. After the bales are opened, give the feed to horses as soon as possible to maintain freshness and nutritional quality.
Frequently Asked Questions about Grass Silage for Horses
Q: Is grass silage safe for horses?
Yes, grass silage is safe for horses when it is made correctly and stored properly. The key requirements are complete anaerobic fermentation, low fructan content, and the absence of mold, yeast, or butyrate contamination. Horses are more sensitive to poor-quality silage than cattle, so feed hygiene and wrapping quality are especially important. Always inspect bales before feeding and discard any silage that smells rotten, shows visible mold, or has been exposed to air for too long.
Q: What is the difference between haylage and grass silage for horses?
Haylage is forage that is partially dried in the field to a moisture level of around 40 to 55 percent before being wrapped and fermented. Grass silage is harvested at a higher moisture level, typically above 60 percent, and undergoes full anaerobic fermentation. For horses, haylage is often preferred because its slightly lower moisture and partial fermentation produce a feed that is closer to hay in texture and energy content. Full grass silage has very low dust content, making it a good option for horses with respiratory sensitivity.
Q: Why is fructan content important in horse silage?
Fructan is a type of sugar found in grasses. Horses lack the enzyme to digest fructan in the small intestine, meaning it passes to the hindgut where it ferments rapidly. This rapid fermentation can disrupt the hindgut microbiome and trigger laminitis, a painful and potentially serious condition affecting the hooves. In well-made silage, lactic acid bacteria convert most fructans into lactic acid during fermentation, reducing the risk. This is why complete and successful fermentation is critical when making silage specifically intended for horses.
Q: How many layers of silage film are recommended for horse feed bales?
For horse feed bales, a minimum of four to six layers of stretch silage film is generally recommended. Horses are more sensitive to feed contamination than cattle, so a tighter and more durable oxygen barrier is important. Using high-quality LLDPE silage film with good UV resistance and puncture strength helps maintain the anaerobic environment throughout the storage period. Bales should be inspected regularly for any punctures or damage that could allow air to enter.
Q: How long can grass silage bales be stored before feeding to horses?
Properly wrapped grass silage bales can be stored for 12 to 18 months without significant nutritional loss, provided the wrapping remains intact. Once a bale is opened, it should be used within two to three days to prevent aerobic spoilage. Exposure to air after opening triggers mold growth and heating, which degrades nutritional value and can produce mycotoxins harmful to horses. Always store bales in a shaded area away from direct sunlight and sharp objects that could puncture the film.
Q: Can silage replace hay entirely in a horse’s diet?
Silage can replace hay as the primary forage source in a horse’s diet, but this should be done gradually and with careful monitoring. Because silage has a much higher moisture content than hay, horses will consume larger volumes by weight to meet their dry matter intake. Breeders should adjust feeding amounts accordingly. Silage works well as a full hay replacement for horses with dust allergies or respiratory conditions. For performance horses or those in heavy work, the energy balance of the silage ration should be reviewed with a nutritionist to ensure performance needs are met.
This article was last reviewed and updated by the Silopak Editorial Team on April 21, 2026. Our team periodically revisits published content to ensure accuracy, relevance, and alignment with current best practices in livestock feed management and silage preservation.
