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Use this list of as a reference when talking to your veterinarian about preventing common parasites from infecting
your livestock.
Each livestock species is vulnerable to different parasites. The world of parasite control is constantly changing, and yourveterinarian is your best ally to determine which parasites are impacting your herd and how to deal with them usingmedications and farm-management techniques. Read below to find out what worms might be living in your barnyard and what anthelmintics—drugs used to combat internalparasites—might best control them. You’ll find these anthelmintics in different deworming medications. Don’t forget that manyof the parasites listed below could be resistant to many of the dewormers listed. Follow veterinary recommendations to haveyour animals tested and treated accordingly.
Cattle Parasite: Stomach worm and lungwormAnthelmintics: levamisole, fenbendazole, oxfendazole, albendazole, eprinomectin, doramectin, ivermectin, moxidectin Parasite: TapewormAnthelmintics: oxfendazole, albendazole Parasite: Common liver flukeAnthelmintic: clorsulon Swine Parasite: Large roundworm (Ascarids)Anthelmintics: ivermectin, fenbendazole, levamisole, pyrantel, dichlorvos, piperazine (adult stage); fenbendazole (migrating,infective); fenbendazole, pyrantel (infective) Parasite: WhipwormAnthelmintics: fenbendazole, dichlorvos Parasite: Nodular wormAnthelmintics: ivermectin, fenbendazole, levamisole, pyrantel, dichlorvos, piperazine Parasite: LungwormAnthelmintics: fenbendazole, ivermectin, levamisole Parasite: Kidneyworm (adult) Anthelmintics: fenbendazole, levamisole Parasite: Kidneyworm (larvae in liver)Anthelmintic: fenbendazole Parasite: LungwormAnthelmintic: fenbendazole Parasite: StrongyloidesAnthelmintics: ivermectin, levamisole Poultry Parasite: Roundworm (Ascarids) Anthelmintics: albendazole, ivermectin, levamisole, piperazine Parasite: Cecal wormsAnthelmintics: albendazole, ivermectin, levamisole Anthelmintics: albendazole, ivermectin, levamisole Parasite: TapewormsAnthelmintic: albendazole Parasite: Coccidia (Eimeria)Anthelmintics: Vaccinate newly-hatched birds. Note: Piperazine is the only dewormer approved for poultry. Other chemicals may be prescribed off-label by a veterinarian. Horses Parasite: Large strongyle (Strongylus vulgaris, S. equinus and S. endentatus) or bloodwormAnthelmintics: broad-spectrum dewormers for adult stages, moxidectin, ivermectin and fenbendazol (administered at doubledose for five days in a row) for migrating phase Parasite: Small strongyle (cyathostome)Anthelmintics: ivermectin and moxidectin for adult stages and moxidectin and fenbendazole (administered at double dosefor five days in a row) for the adult and encysted stage. Ninety-five percent of populations have an inherited resistance tobenzimidazole and 50 percent to pyrantel, so check with your vet before using a dewormer from this group. Parasite: Roundworms (Ascarid)Anthelmintics: ivermectin, moxidectin, fenbendazole, pyrantel pamoate Parasite: Bot (Gasterophilus intestinalis)Anthelmintics: ivermectin, moxidectin. Parasite: Pinworm (Oxyuris equi, common pinworm; Probstmayria vivipara, minute pinworm) Anthelmintics: ivermectin, moxidectin, fenbendazole Parasite: Tapeworm (Anoplocephala perfoliata, A. magna)Anthelmintics: praziquantel Small Ruminants Parasite: Barber pole worm (Haemonchus contortis)Anthelmintics: ivermectin, moxidectin, levamisole, fenbendazole, albendazole Parasite: Small brown stomach worm (Ostertagia circumcinta)Anthelmintics: ivermectin, moxidectin, levamisole, fenbendazole, albendazole Parasite: TapewormAnthelmintics: benzimidazoles Parasite: LungwormAnthelmintics: ivermectin, moxidectin Parasite: Liver flukeAnthelmintics: albendazole, clorsulon Parasite: CoccidiaAnthelmintics: sulfa drugs, amprolium Parasite: Meningeal worm or deer or brain worm (a parasite of the white tail deer; Paralaphostrongylus tenius)Anthelmintics: anti-inflammatory drugs, levamisol, ivermectin, albendazole, fenbendazole, thiabendazole Note: Only fenbendazole and rumatel are FDA-approved for use in goats. Other classes must be prescribed off-label by aveterinarian. About the Author: Sharon Biggs Waller is an award-winning writer and author of Advanced English Riding (BowTie Press,2007). She lives on a 10-acre farm in northwestern Indiana with her husband, Mark, 75 chickens, two Lamancha goats, twohorses and an assortment of cats and dogs.

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