With spring bird migrations underway and no vaccine available, experts on highly pathogenic avian influenza believe the virus is evolving and poultry raisers need to redouble biosecurity efforts. A lot of activity leading to biosecurity breaches occurs at night as wild birds will often come in and look for food at night. So, one thing we tell producers or backyard folks is … [Read more...]
Change in cattle deworming practices may reverse resistance
Parasitologists saw dewormer resistance in cattle coming before most producers did. But, overuse of benzimadazoles, macrocyclic lactones and levamisoles in all their forms has increased reports of nematode resistance. However, Ray Kaplan, a professor of parasitology with the College of Veterinary Medicine at the University of Georgia, says what sheep raisers have learned about … [Read more...]