Haemonchus contortus levamisole resistance on Dutchess County NY ruminant farms

Barber pole worms are parasites that suck the blood from animals, from inside their stomachs. They kill otherwise healthy animals, and cost farmers millions of dollars. To eliminate infections of barber pole worms, anti-parasitic drugs are used, but since the worms are evolvable, some of the worms have developed resistance. By identifying where drug resistant worms are developing, farmers and veterinarians can better identify cost-effective tools to get rid of them. I surveyed four farms to understand the frequency of barber pole worms in their animals, and asked the farmers about their use of... Mehr ...