Selenium May Boost Bugs' Immunity

Andy VanceEducation, Government, Nutrition, Production

That same mineral you may be using in your ration may be keeping the bugs in the field from getting sick. The latest research out from USDA’s Ag Research Service suggests that moderate dietary levels of selenium may actually strengthen insect immunity. Typically, high levels of selenium are toxic to pests, but studies with cabbage looper moths and tobacco budworms found that the group raised on artificially high, though not toxic, levels of selenium had a stronger immune response system, therefore lowering the effectiveness of microbial biological control agents used against them.

A New Way to Eliminate BVD?

Andy VanceAudio, Government, Production, Research

USDA’s Ag Research Service is working to combat major diseases in the dairy industry. One of the most challenging has been Bovine Viral Diarrhea (BVD). The disease has typically been battled by vaccinations, but as we learn from Julia Ridpath, a microbioligist with ARS, this strategy isn’t as effective as it could be due to persistently infected animals. Past-President of the National Association of Farm Broadcasting Joe Cornely has the details here: Julia Ridpath on BVD (2:59 mp3)