Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Huston, Carla
Committee Member
Hostetler, Doug
Committee Member
Zhang, Shuping
Date of Degree
8-9-2008
Document Type
Graduate Thesis - Open Access
Major
Veterinary Science
Degree Name
Master of Science
College
College of Veterinary Medicine
Department
Department of Pathobiology and Population Medicine
Abstract
The purpose of this study was to characterize Johne’s disease in Mississippi cattle. Nine hundred eighteen animals from 23 sale barns in Mississippi were tested for Mycobacterium avium subspecies paratuberculosis (MAP). Ten milliliters of blood and 4-10 grams of feces were collected from cattle over two years of age presented to the attending auction veterinarian. Information obtained at the time of collection included the animal’s sex, type, and reproductive status. Serum samples were screened by an enzyme-linked immunosorbent assay (ELISA) for MAP. Shedding status was determined using polymerase chain reaction (PCR) on corresponding fecal samples. Overall, 17.3% (4/23) of sale barns had at least one animal sero-positive for MAP and 0.54% (5/918) were PCR positive. These results show a Johne’s disease prevalence similar to the estimate of 0.4% of animals infected found by the USDA NAHMS Beef ‘97 study, emphasizing the need for continued prevention and control practices.
URI
https://hdl.handle.net/11668/15303
Recommended Citation
Carter, Jesse Lee, "Characterization of Johne's disease in Mississippi cattle" (2008). Theses and Dissertations. 1019.
https://scholarsjunction.msstate.edu/td/1019