| sensitivity of test strategies used in the voluntary johne's disease herd status program for detection of mycobacterium paratuberculosis infection in dairy cattle herds. | to evaluate sensitivities at the herd level of test strategies used in the voluntary johne's disease herd status program (vjdhsp) and alternative test strategies for detecting dairy cattle herds infected with mycobacterium paratuberculosis. | 2002 | 12420786 |
| the distribution of mycobacterium avium ssp. paratuberculosis in the environment surrounding minnesota dairy farms. | the objective of this study was to characterize the distribution of mycobacterium paratuberculosis (map) in the environment of infected and uninfected minnesota dairy farms. eighty herds known to be infected from minnesota's johne's disease control program (jdcp) and 28 herds known to be uninfected from minnesota voluntary johne's disease herd status program (vjdhsp) were sampled. fecal samples from up to 100 cows in each herd were cultured in pools of 5 cows. two environmental samples were obta ... | 2004 | 15375057 |
| amplified fragment length polymorphism to detect clonal diversity and distribution of mycobacterium avium subspecies paratuberculosis in selected minnesota dairy cattle. | the molecular ecology of mycobacterium avium subspecies paratuberculosis (map), the causative agent of johne's disease, is not well understood in the united states. in this study, a dna fingerprinting method, amplified fragment length polymorphism (aflp), was used to subtype the pathogen and assess the clonal diversity of map in minnesota dairy herds. fifty-six fecal culture test-positive isolates from various minnesota counties and culture dates were analyzed in this study. the aflp identified ... | 2005 | 16130987 |
| efficacy of feeding plasma-derived commercial colostrum replacer for the prevention of transmission of mycobacterium avium subsp paratuberculosis in holstein calves. | to estimate the relative risk of paratuberculosis (johne's disease [jd]) in calves fed a plasma-derived colostrum-replacement (cr) product versus raw bovine maternal colostrum (mc). | 2009 | 19405889 |