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Dewormer (anthelmintic) resistance

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Dewormer (anthelmintic ) resistance is a major issue in the small ruminant industry and an emerging problem in other segments of animal agriculture. Drug resistance exists when deworming fails to reduce fecal egg counts by more than 95 percent. It is inevitable. Severe resistance exists when treatment fails to reduce worm egg counts by more than 60 percent. Currently, there is resistance to all of the dewormers used to treat small ruminants (in the US). However, the level of resistance varies by geographic region and individual farm.

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Disclaimer: The DrenchRite test referenced in this video is not currently available and Dr. Ray Kaplan is no longer with the University of Georgia. 

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Last updated 12.01.24.  Links verified 12.01.24.

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