In the U.S., there are four anthelmintic drug classes: avermectins (macrocyclic lactones), benzimidazoles, imidazothiazoles and sulfonamide derivatives.

The use of commercial livestock dewormers has paid off in terms of animal health and productivity, but it has also resulted in resistance among parasite populations. “As dewormers lose effectiveness, ...

It is no secret that cattle deworming products are becoming less and less effective. Dr. Christine Navarre, DVM, Extension veterinarian at Louisiana State University Agricultural Center, spoke about ...

Parasites are growing resistant to dewormers used by many Missouri farmers to treat their cattle. That’s according to a new study from University of Missouri researchers. Parasites can cause weight ...

Russ Daly, SDSU Extension veterinarian says that deworming calves can be one of the most beneficial management practices, however there are concerns about parasite resistance to dewormers. Many ...

The risk of parasites during the grazing season can loom the whole summer, but most deworming products are unable to provide protection for the entire duration. Knowing what products are available, ...

Although still a relatively new parasite management practice, more and more southern beef producers and industry specialists are recognizing the value of strategically deworming in the spring to help ...