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PNEUMONIA AND BIGHORN SHEEP: TEST AND REMOVE Fact Sheet
Fatal respiratory disease (pneumonia) and its effects on populations is a primary management concern in most jurisdictions with bighorn sheep. Decades of research have identified Mycoplasma ovipneumoniae (M. ovi), a bacterium that damages the cells lining the respiratory tract, as a “trigger” that allows other bacteria to invade the lungs, causing pneumonia. To understand M. ovi infection dynamics, researchers repeatedly tested free-ranging and captive bighorn ewes from infected herds and found that some always, or almost always, tested positive for M. ovi. These long-term carriers can infect newborn lambs that have little immunity. Infected lambs spread M. ovi to other lambs in nursery groups, usually resulting in pneumonia-related deaths before 8 weeks of age. Poor to no lamb survival is common in M. ovi infected herds and is a pattern that can last for decades.
WSF Policy: Films and Video Standards
One of the many things the Wild Sheep Foundation prides itself on, especially at our annual Sheep Show® Convention, is celebrating the treasured animals we hunt, our freedom to do so, and the outdoor lifestyle, memories, and contributions to conservation this freedom provides.
Gray N. Thornton Q2 Address
After the close of our 2022-23 fiscal year, WSF president & CEO Gray N. Thornton shares a few new milestones and a look into the future for the Foundation and our wild sheep resources.