How to prevent parasite or worm infections in horses
The following strategies can help in controlling worm populations:
Limit the density of horses (animals per acre) to prevent overgrazing and reduce pasture contamination.
Pick up and dispose of manure regularly.
Compost manure away from the pasture.
Mow and harrow pasture periodically to break up manure piles and expose the parasite eggs and larvae to the elements (sun and heat, dry air, cold) that will kill them.
Consider rotating pastures with another species (cattle, sheep) to interrupt the life cycle of equine parasites.
Use a feeder for hay and grain rather than feeding on the ground.
Remove bot eggs from horses’ hair coat.