VMP 420 Lecture Notes - Lecture 15: Horse-Fly, Albendazole, Trematoda
12 Feb 2020
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Once infected, will be infected for life. Mostly adults are the only ones really affected by it. Transmitted by biting insects (ticks and horseflies: can also be transmitted through dirty needles (from infected animal) Worms in stocker cattle cost producers 10-15 pounds per calf every 100 days on pasture. Is the most damaging to cattle as well. L3 larvae burrows into the wall of the cow"s stomach after being ingested: can hang out there for months, causes inflammation and steals energy from the cow. There are bovine liver flukes and deer liver flukes. Treatment: best to kill early in the life cycle, clorsulon and albendazole. Do not cause a big problem in cattle. End up manure and transmitted that way. White dewormers: oral, given with syringe or squirt gun. Avermectins: killed nematodes effectively, both an internal and external parasite killer, aka endectocide. Best way to prevent parasites: getting rid of the larvae in the pasture before cattle become more infected.
