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Study: Flaxseed Oil Can Reduce Strongyle Load In Horses

Vegetable oils are often added to equine diets to supplement fat and energy, but adding flaxseed oil (also called linseed oil) now has an additional equine health benefit: it can significantly reduce strongyle load in horses. This finding is especially important as strongyles have become more resistant to available deworming medications.

A Polish study added pure flaxseed oil to the diet of 15 Thoroughbred and 12 Arabian horses that were fed oats, muesli, and hay three times a day. The horses were separated into four groups fed soybean oil, flaxseed oil, flaxseed oil and vitamin E, and one group with no added oil that served as a control. Lead researcher Dr. Wanda Górniak had the horses dewormed with ivermectin and praziquantel in February 2020.

In June 2020, researchers performed fecal egg counts on samples from the horses. The researchers found that 25 of the 27 horses had worms, with strongyles the most prevalent; one-third of the horses also had threadworms. The horses that had been fed flaxseed oil have the lowest prevalence of strongyles (71 percent compared to 100 percent in other groups).

The scientists concluded that the adding flaxseed oil to a horse's diet significantly reduces its strongyle worm load.

Read the study here.

Read more at HorseTalk.

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Easy-To-Implement Ways To Reduce Parasite Resistance

Currently, equine internal parasites can resist all classes of dewormers on the market. This is especially concerning as internal parasites can cause so much harm—and there are no new dewormers on the horizon. However, there are some things horse owners can do to keep horses healthy naturally, reports The Horse.

Veterinarians originally recommended that horses be dewormed every two months, as that was when parasitologists began seeing worm eggs returning. Now, strategic deworming and an integrated approach to parasite management is preferred. This includes only deworming the horses that need it and not blanket deworming all horses on the farm.

Other ways to prevent worm burdens include:

Quarantining new horses—this includes not turning them out on fields other horses will eventually use. The point is to keep the horse and the worms it os carrying separate long enough for the eggs to pass through his system.
Feeding off the ground to prevent ingestion of larvae
Ensuring feed and water sources are not contaminated with manure
Removing manure piles before eggs hatch
Composting manure at temperatures above 104 degrees F to destroy eggs and larvae
Keeping grass taller than 3 inches to minimize larvae ingestion
Dragging fields on hot days to expose larvae in manure to temperatures they cannot survive
Implementing pasture rotation, which disrupts the parasite life cycle
Stocking pastures with an appropriate number of horses (one horse per acre at minimum) to reduce grazing around manure
Renovating pastures for better forage options
Including other species in the pastures with horses so different plants get eaten

Read more at The Horse.

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