Skip to main content
ARS Home » Research » Publications at this Location » Publication #70668
Title: PREVALENCE OF CASEOUS LYMPHADENITIS IN SOUTHERN-ALBERTA SHEEP.

Author
item STANFORD, K - ALBERTA AGRIC.FOOD&DEV.
item Brogden, Kim
item REDMOND, L - AGRIC.&AGRI-FOOD RES.CENT
item MCCLELLAND, L - AGRIC.&AGRI-FOOD RES.CENT
item KOZUB, G - AGRIC.&AGRI-FOOD RES.CENT

Submitted to: Canadian Journal of Animal Science
Publication Type: Abstract Only
Publication Acceptance Date: 4/12/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Caseous lymphadenitis (CLA) is a disease of major economic consequence to sheep and goat producers in North America. This disease can lead to premature death of breeding stock as well as loss of whole or part carcasses after trimming of CLA lesions. As part of a four-year study to evaluate a new vaccine for caseous lymphadenitis, 2176 ewes and lambs in 9 flocks in southern Alberta were bled and examined for external abscesses. A microagglutination assay was used to determine agglutination antibody titres, with titres > 1:80 indicating exposure of the animal to C. pseudotuberculosis or vaccine. Three of the flocks had participated in a CLA control program prior to the study. Lambs from these flocks had a lower incidence of exposure to CLA (P < 0.05), ranging from 2.6 to 9.7% compared to the remainder of flocks where CLA exposure ranged from 11.2 to 22.9%. Mature animals in flocks not previously vaccinated against CLA had incidences of CLA exposure ranging from 50 to 94%. These results indicate that CLA is widespread in southern Alberta sheep.