6th Annual Judith Ramaley Celebration of Research and Creative Scholarship
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Poster #115 Mannheimia haemolytica isolates and other adaptations in Peruvian cattle Gabriel Velez and Caleb Hammel Faculty Mentors: Amy Runck and Nicole Aulik Mannheimia haemolytica is the bacterium responsible for a causing severe fibrous pleuropneumonia in cattle, commonly referred to as “shipping fever.” It is estimated that 30% of cattle deaths globally are a result of shipping fever, resulting in a loss of over one billion dollars a year in the United States alone. Mannheimia haemolytica is considered to be the most important substituent of the bovine respiratory disease complex and is an opportunistic pathogen found in the upper respiratory tract of most cattle. We examined a sample of Peruvian cattle for Mannheimia haemolytica as it is believed that due to increased genetic diversity, Peruvian cattle are not as susceptible to respiratory infections caused by Mannheimia haemolytica as cattle in North America. Nasal swab samples were taken from Peruvian cattle and were tested for the presence of a bovine respiratory disease (BRD) complex, caused by the bacterium, Mannheimia haemolytica, using a multiplex PCR assay. Bacteria grown from the nasal swabs as well as entire suspensions were tested. The presence of Mannheimia haemolytica, which is identifiable through its leukotoxin, was not recovered from these samples using this assay. So far, preliminary findings indicate that there is a lower presence of this bacterium than what is typically found in North American cows. North American cows have an estimated prevalence of 5% in healthy bovine and 12% in diseased bovine. |
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