Wasted Dewormer
You can’t escape reading or hearing about disease-causing microorganisms — with exotic names like MRSA and E. coli OH:157 — that develop resistance to drugs. There are also plenty of reports about resistance to antibiotics in livestock and people or weeds’ resistance to crop chemicals.
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There is another kind of resistance in cattle, swine, sheep and goats: internal worms that develop resistance to deworming agents. On this subject, I offer you this true story about a couple of cattlemen and their herd of 200 brood cows out on Cowpath Road.
Source: "Fighting Resistance with Brains and Brawn" Ohio Country Journal, June 24, 2019.