Older Horses
“Very old belgium draft horse outside in winter” by Beatrice, licensed via Adobe Stock
Parasite Control in Older Horses: Why It Matters More Than Ever
Did you know that senior horses are especially vulnerable to internal parasites?
As horses age, their immune systems weaken, making them more susceptible to parasites and the health problems they cause. A one-size-fits-all deworming schedule won’t cut it—older horses need a tailored parasite control program to stay healthy and comfortable.
Understanding the Challenges:
Weakened Immunity – Aging horses lose some natural defenses, leaving them more vulnerable to infections.
Higher Parasite Burden – Older horses may not clear parasites as effectively, increasing worm loads.
Tapeworm & Strongyle Risk – Seniors often remain susceptible to tapeworms and small strongyles.
Health Consequences – Parasites can cause colic, weight loss, poor coat condition, and reduced performance.
Implementing a Targeted Program:
Faecal Egg Counts (FECs) – Regular FECs help identify high shedders and guide deworming decisions.
Targeted Deworming – Treat based on FEC results and seasonal risk, not a set calendar.
Environmental Management – Pick up manure, rotate pastures, and limit grazing in high-risk areas.
Veterinary Guidance – Work with your vet to choose safe, effective products for your horse’s unique needs.
Key Considerations for Senior Horses:
Tapeworms – Higher risk if grazing on lush pastures. Routine tapeworm control is essential.
Small Strongyles – Target especially in spring and autumn.
Moxidectin – Use with caution—no more than once a year, unless directed by a vet.
Sensitive Systems – Some seniors are more reactive to dewormers—consult your vet before treating.
Correct Dosage – Always dose accurately for effectiveness and safety.
Your older horse’s health depends on proactive, personalised care. Don’t wait for symptoms—start with a faecal egg count and build a plan from there. Collect and send me a sample for prompt testing for just $15 per sample and let’s get the ball rolling.
Have you developed a parasite control plan for your senior horse? Let us know what’s worked for you!
Reference: Content adapted from equine parasite control guidelines by the American Association of Equine Practitioners (AAEP), World Association for the Advancement of Veterinary Parasitology (WAAVP), and veterinary recommendations for managing older horses’ immune health and parasite risk.
