Audio: Managing Resistant Parasites in Your Cow Herd

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Dr. John Gilleard on resistant parasites in livestock

Research indicates that internal parasite resistance to some dewormers is likely widespread, but there’s no simple solution. There are, however, approaches that can work, and some that likely won’t. Dr. John Gilleard, professor of parasitology at the University of Calgary, busts some myths about resistant parasites, explains how they evolve to become resistant and what beef producers can do about it.

About the author

Lisa Guenther is the senior editor of magazines at Glacier FarmMedia, and the editor of Canadian Cattlemen. She previously worked as a field editor for Grainews and Country Guide. Lisa grew up on a cow-calf operation in northwestern Saskatchewan and still lives in the same community. She holds a graduate degree in professional communications from Royal Roads University and an undergraduate degree in education from the University of Alberta. She also writes fiction in her spare time and has had two novels published by NeWest Press in Edmonton.