Diagnosis: Examining the Evidence (Parasite Primer Part 6)

by: Karen Briggs
Editor's note: This is part six of a twelve-part series on internal parasites of horses. How do you really know if your worm control program is working? If your horses are looking good, are they doing as well as they could be? If they are not doing as well as you would like despite frequent deworming, is the problem due to worms or to something else? ...