AAEP Internal Parasite Control Guidelines


Table of Contents Take-Home Messages


1. Goals of Parasite Control 2. Introduction


2.1.Cyathostomins (Small Strongyles) 2.2.Large Strongyles


2.3.Anoplocephala perfoliata (Tapeworms) 2.4.Parascaris spp. (Roundworms; Ascarids) 2.5.Strongyloides westeri (Threadworms) 2.6.Oxyuris equi (Pinworms) 2.7.Gasterophilus spp. (Bots)


2.8.Habronema and Draschia spp. (Stomach Worms) 2.9.Onchocerca cervicalis (Neck Threadworm)


3. Parasite Diagnostics and Their Performance 3.1.Diagnosing parasitic disease 3.2.Fecal egg counts 3.3.Strongyles 3.4.Ascarids


3.5.Tapeworms 3.6.Pinworms


3.7.Neck Threadworms


4. Anthelmintic Treatment Evaluation 4.1.Resistance Testing


4.2. Interpretation of the FECRT 4.3.Guideline thresholds and group sizes


4.4.Treatment check with fewer than five horses? 5. Anthelmintic Resistance Status


5.1.Tapeworms 5.2.Pinworms


5.3.Other parasites


3 4 4


4 4 5 5 5 6 6 6 6


7 7 7 9 9


10 10 10


10 12 14 16 16


17 17 18 18


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