Abstract
The objective was to detect presence of calves excreting Mycobacterium avium subsp. paratuberculosis (MAP) in their feces as a consequence of being born to MAP fecal culture positive (vs. negative) dams. For each cow that was about to calf, approximately 10 g of feces was collected manually by the herdsmen from the rectum using a disposable plastic examination sleeve within 48-72 h prior to actual calving. Between 1 and 3 d of birth, herd personnel collected approximately 10 g of fecal samples followed by monthly visits to the farm at which time 10 g of fecal samples were again collected by study investigators from each calf at approximately 30, 60 and 90 d of age. Mycobacterium avium subsp. paratuberculosis was recovered from 8% (5/60) of the cows that gave birth to calves. However, MAP was not recovered from any of the fecal samples (0/240) collected from study calves. Findings of the present study suggest lack of evidence for fecal excretion of MAP in calves born to fecal culture positive (vs. negative) dams in a heavily infected herd.
Original language | English (US) |
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Pages (from-to) | 242-245 |
Number of pages | 4 |
Journal | Preventive Veterinary Medicine |
Volume | 93 |
Issue number | 2-3 |
DOIs | |
State | Published - Feb 1 2010 |
Keywords
- Calves
- Fecal excretion
- Mycobacterium avium subsp. paratuberculosis