Sand Accumulation in Equines
Sand accumulation, often referred to as sand enteropathy or sand colic, occurs when horses and donkeys ingest sand, soil, or fine grit that settles in the intestines instead of passing through normally.
Over time, this material can build up, irritate the gut lining, interfere with digestion, and in severe cases, cause painful and potentially dangerous blockages. Horses kept on sandy soils, sparse grazing, dry lots, or overgrazed paddocks are particularly at risk.
Why Sand Matters
Sand is heavy and abrasive. When it collects in the gut, it can rub against the intestinal lining, causing inflammation and discomfort. It also adds weight to the intestines, which can interfere with normal gut movement.
If left unmanaged, sand accumulation may lead to:
Recurrent or mild colic
Diarrhoea or loose manure
Poor nutrient absorption
Weight loss
Reduced appetite
Poor coat condition
Lethargy
In severe cases, intestinal blockage or displacement
Many horses carry small amounts of sand without obvious symptoms, which is why regular monitoring is important.
How Horses Ingest Sand
Sand is usually ingested accidentally while horses are eating close to the ground.
This commonly happens when:
Grazing on short or overgrazed pasture
Eating hay or feed placed directly on sandy soil
Foraging in dry lots or paddocks
Grazing in drought conditions
Feeding in windy environments
Young horses, bored horses, and those with limited forage are more likely to ingest sand while searching for food.
Signs of Sand Accumulation
Sand-related problems can be subtle at first. Some horses may show no signs until a large amount has built up.
Common signs include:
Recurrent mild colic
Diarrhoea or loose manure
Gritty sound when listening to the belly
Weight loss or poor condition
Reduced appetite
Lethargy
Poor performance
In more serious cases, colic may become severe and persistent.
Detection
Sand accumulation can be detected in several ways, depending on the severity.
Detection methods may include:
Faecal sand tests
Physical examination
Ultrasound or X-rays (in some cases)
Reviewing clinical history and management
Because sand does not always cause obvious symptoms, routine monitoring is useful for horses kept in high-risk environments.
Treatment & Long-Term Management
Treatment depends on how much sand is present and whether the horse is showing symptoms.
Management often includes:
Increasing long-stem fibre intake
Feeding off the ground
Using sand-clearance supplements (such as psyllium, under veterinary guidance)
Improving pasture and paddock management
Ensuring constant access to forage
Severe cases may require veterinary intervention.
Preventing Sand Accumulation
Prevention is far easier than treatment.
Good preventative practices include:
Feeding hay in hay nets, tubs, or feeders
Avoiding feeding directly on sandy soil
Maintaining good pasture cover
Rotating grazing areas
Providing enough forage to prevent foraging behaviour
Regular monitoring of at-risk horses