The prevalence of milk and serum antibodies to Mycobacterium avium subspecies paratuberculosis in dairy herds in Ontario.
This study randomly surveyed 50 dairy herds in Ontario; 18% and 30% of herds had 2 or more milk or serum enzyme-linked immunosorbent assay (ELISA)-positive cows, respectively. The apparent cow level prevalence was 1.7% and 2.6% on the milk and serum ELISA, respectively. The serum and milk assays agreed moderately.
Hendrick
Steven
S
Department of Population Medicine, University of Guelph, Guelph, Ontario N1G 2W1. shendric@uoguelph.ca
Duffield
Todd
T
Leslie
Ken
K
Lissemore
Kerry
K
Archambault
Marie
M
Kelton
David
D
D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis / Q000097:blood*; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology / Q000382:microbiology*; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods / Q000662:veterinary; D005260:Female; D008892:Milk / Q000276:immunology*; D016927:Mycobacterium avium subsp. paratuberculosis / Q000276:immunology*; D009864:Ontario / Q000453:epidemiology; D010283:Paratuberculosis / Q000453:epidemiology* / Q000276:immunology; D015995:Prevalence
D000907:Antibodies, Bacterial