All In The Timing

摘要

Timing and goals determine effective control on internal parasites in mature cows. ab:If you're confused about the most effective time to deworm cows, perhaps you'll find some solace in the fact that even the worms don't know. Fact is, Ostertagia oste rtagi (brown stomach worm), which researchers say is responsible for a majority of damage caused by internal parasites, has shown remarkable adaptation to new environments. It even transforms its life cycle to match a new and opposite environment when tr ansported inside of cattle. "In general, deworming mature beef cows will benefit in enough extra milk production and enough extra condition to re-breed that it's an economically sound decision most of the time," says Tom Craig, professor of pathobiology at Texas A&M University (TAMU) College of Veterinary Medicine.