Article
Genetic variation of Mycobacterium avium ssp. paratuberculosis infection in US Holsteins.
Journal of dairy science - 1 May 2006
Gonda M G, Chang Y M, Shook G E, Collins M T, Kirkpatrick B W
Abstract excerpt
The objective of this study was to estimate genetic variability of Mycobacterium avium ssp. paratuberculosis infection in US Holsteins. Blood and fecal samples were collected primarily from daughters of 12 bulls in their second or third lactation. Routine disease testing of the sires documented that they were not infected. Herds without a "suspect" or positive ELISA (sample/positive ratio > or = 0.10) or positive...
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