We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A herd level analysis of aCorynebacterium pseudotuberculosisoutbreak in a dairy cattle herd.
- Authors
Yeruham, Israel; Friedman, Samuel; Perl, Samuel; Elad, Daniel; Berkovich, Yair; Kalgard, Yoram
- Abstract
Corynebacterium pseudotuberculosisinfection in an Israeli dairy cattle herd is described. The disease was characterized by ulcerative granulomatous lesions, which occurred in an epidemic form. Thirty-two cows and two heifers were affected, the ratio of the number affected to number at risk being 17.5 : 1 and 9.5 : 1, respectively. The culling rate was 50% of the affected animals. Most of the affected animals were cows (91.2%), with one first-calving cow (2.9%) and two heifers (5.9%) also affected. The infection occurred during the summer to autumn months (August–December), and lasted 118 days. The incubation period is about 2 months. The disease appeared in two clinical forms– cutaneous and mastitic– or as a mixed form.C. pseudotuberculosisorganisms that were isolated from the ulcerative granulomatous lesions and from milk samples failed to reduce nitrate. A decrease in milk production (4%) and an increase in the bulk-milk somatic cell count from a herd mean of 240 × 103 mL−1 to 460 × 103 mL−1 were noted during the morbidity period. The organism was isolated from milk samples of eight animals (25%). Clinical, epizootiological and microbiological aspects of the infection are described.
- Subjects
DAIRY cattle; CATTLE diseases; CORYNEBACTERIUM diseases; VETERINARY dermatology; VETERINARY microbiology; VETERINARY medicine
- Publication
Veterinary Dermatology, 2004, Vol 15, Issue 5, p315
- ISSN
0959-4493
- Publication type
Article
- DOI
10.1111/j.1365-3164.2004.00388.x