🌾Haylage/Baleage & Fermented Grasses: Understanding Fermented Forage:
- Natural Horse NZ

- Mar 14
- 2 min read
Updated: 2 days ago
HAYLAGE: So here is my take on haylage/baleage, and other fermented grasses:
Haylage is an interesting one because it isn’t really forage in the traditional sense. It has already been fermented in the bale, so some of the fibre fermentation that would normally happen in the horse’s hindgut has effectively already taken place. Horses are hindgut fermenters and are designed to extract energy from fibre through that process themselves, which is why we generally recommend grass and hay as the foundation of a forage-first approach.
Another consideration is that horses don’t naturally eat fermented grass. When forage is chopped, compacted and wrapped like this it removes many of the ways horses normally assess what they are eating. Horses use far more than just their prehensile lips. They use smell, touch, texture and the feel of different plants to sort through forage. When it’s wet, fermented and compacted together those cues are largely lost, which can make it harder for them to separate out plants they would normally avoid, and there have been cases where horses have accidentally consumed toxic plants in haylage for that reason.
Another concern is moulds. Because haylage is wrapped and stored in an anaerobic environment, if the fermentation process doesn’t go exactly right or if the wrap is damaged, moulds and undesirable microbes can develop. Horses are very sensitive to moulds and mycotoxins, and these can affect the gut, respiratory system, and overall health.
For those reasons we prefer to focus on grass and well made hay as the foundation of a forage first diet wherever possible.
FEEDING PLAN
To view our anti-inflammatory free feeding plan with real wholefood ingredients, check out this link:
Continue the Food for Thought Horse Series
Don't stop here! Discover the fascinating role nutrition plays in your horse's health, behaviour and wellbeing.
🌾 All About Grass and Sugar for Horses
🌾 Why Hay Is the Best Food for Horses
🌾 Forage Is Fibre
🌾 Haylage / Baleage & Fermented Grasses
🌾 Lucerne (Alfalfa) for Horses
🌾 Horse Feeding and Sprouted Grains
🌾 Horse Feeds and Barley
🌾 Beet Pulp
🌾 Copra (Coconut Meal)
🌾 Soya
🌾 The Hard Keeper Horse
🌾 Feeding Older Horses
🌾 Are You Accidentally Turning Your Horse Into an Industrial Garbage Disposal Unit?
View the complete Food for Thought Horse Series →






The discussion on haylage raises important points about equine nutrition. The fermentation process alters the natural forage experience for horses, which are designed to forage for specific plant cues. The potential risks associated with forage like haylage, especially regarding moulds and toxic plants, suggest that we should tread carefully. It’s crucial to consider how such choices impact the overall health of horses, as noted by Leon in the article.