The American Association of Equine Practitioners (AAEP) recently released updated equine parasite control guidelines, providing unified strategies for veterinarians and horse owners in diagnosing and controlling equine parasites.
The guidelines continue to support an individualized deworming approach for horses using targeted treatments at appropriate dosage levels.

The AAEP Parasite Control Guidelines identify key parasites of concern along with diagnosis and treatment standards for both adult horses and young horses less than three years of age. Notable information and updates within the AAEP Parasite Control Guidelines include:
• Small strongyles remain the key parasite of concern in adult horses, and the guidelines recommend treating against the encysted stage of the parasite at least once per year.
• Ascarids (roundworms) are the crucial parasite affecting young horses.
• All treatment or non-treatment recommendations are outlined based on a preventive program where fecal egg count/ testing is being performed.
• Horses should not receive a deworming treatment in the 8 weeks prior to a fecal egg count reduction test (FECRT) to evaluate the development of parasite resistance.
• Two recent studies were highlighted in the updated guidelines that document reduced larvicidal efficacy of the five-day double-dose fenbendazole regimen.
• The guidelines caution that reduced product efficacy can be caused by factors other than resistance such as incorrect dosage, incorrect storage and expired product.
• New information was added to Cyathostomin Egg Reappearance Periods for Equine Anthelmintics titled “ERPs on farms with emerging resistance.”
• All active ingredients saw a decrease in duration; however, moxidectin remain the longest duration for suppressing small strongyle egg reappearance.