Tips on Rotational Equine Worming

May 21, 2019

Palmer Feed is Your One-Stop-Shop for Equine Deworming Products!

Heavy rainfall creates ideal breeding conditions for parasites. This leads to rapid reproduction, and an increase in parasitic worm infection in horses. Due to a high volume of rainfall this season in West Texas, the time for protecting your horse starts NOW!

As seasons change, so does your horse’s worming schedule. It’s important to know which products are going to the deliver the best results imperative to your horse’s health, and longevity. It’s also crucial to know which products to use when in order to maintain an efficient worming schedule.

Parasitic worms exhibit resistance to treatments when using products with the same active ingredients. Resistance is the ability of a population to become unaffected by a treatment that was once effective. This is an evolutionary response where microorganisms are adapting in order to face a threat to their population, such as the chemicals in pesticides, and deworming products. Through a rotational deworming program, the threat of parasitic worm resistance decreases.

Strongyles are a type of parasitic worm that cause serious damage to the intestinal tract, and create many health problems in horses. Large strongyles, known commonly as bloodworms and roundworms, are consumed by grazing horses. The parasitic larvae then infest your horse’s intestinal tract where they dwell and continue to develop. Horses with large strongyles may exhibit symptoms such as weight loss, colic, and overall lack of performance; severe cases can lead to sudden death. Small strongyles larvae lay dormant in the intestinal tract, and can be harder to control. Some symptoms from small strongyles include weight loss, diarrhea, colic and poor coat condition. Other parasitic worms that are a concern to horses include tapeworms, pin worms and bots; all of which induce serious health issues starting with your horse’s digestive tract.

When controlling parasitic worms in your horse, preventative measures are going to be more effective. Having a rotational worming schedule will facilitate prevention of these parasitic worms from becoming a serious problem. 

Time of Year             Compound    

Jan/Feb             Benzimidazoles

March/April            Ivermectin/Moxidectin       

      Durvet Ivermectin

May/June            Pyrantels       
      Durvet Pyrantel

July/Aug           Benzimidazoles       

Sept/Oct          Ivermectin/Moxidectin
          w/ Praziquantel
      Zimectrin Gold
      Quest Plus

Nov/Dec           Pyrantels      
      Durvet Pyrantel

 A suggested rotational worming chart with recommended products from Palmer Feed!

The Palmer Feed & Supply retail store is located at 1318 N. Chadbourne St., San Angelo, Texas. For directions click here. For other products available online, like other pet dewormers, click here

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