Back to Search
Start Over
Effect of Shearing on the Incidence of Caseous Lymphadenitis in Awassi Sheep in Jordan
- Source :
- Journal of Veterinary Medicine Series B. 47:287-293
- Publication Year :
- 2000
- Publisher :
- Wiley, 2000.
-
Abstract
- A total of 876 sheep from five flocks in north Jordan were selected to study the effect of shearing on the incidence of caseous lymphadenitis (CLA). The animals were divided into two age groups, sheep aged 1-2 years and those agedor = 3 years. Blood samples were collected from the animals at the time of shearing and again 6 months later. A toxin enzyme-linked immunosorbent assay was used to identify sheep that had been infected with Corynebacterium pseudotuberculosis. The point prevalences of CLA were 6.59% and 21.06% in the 1-2-year andor = 3-year age groups, respectively, and were significantly higher (P0.01) in theor = 3-year age group. The overall prevalence among all ages was 15.3%. In the shorn sheep, the incidence of CLA was 22.46% and 9.47% in the 1-2-year andor = 3-year age groups, respectively, and was significantly higher (P0.05) in the 1-2-year age group. In the control animals, the incidence was 8% and 5.26% in the 1-2-year andor = 3-year age groups, respectively, and was different (P0.01) between the shorn (22.46%) and control (8%) animals of the 1-2-year age group. An epidemiological survey of 35 sheep farms revealed the prevalence of CLA, shearing wounds and unhygienic conditions during shearing in all farms. In conclusion, the prevalence of CLA increases with age and the incidence increases only in young sheep after shearing. Sheep are sheared under unhygienic conditions, which may be a contributing factor in increasing both the prevalence and the incidence of CLA.
- Subjects :
- Veterinary medicine
medicine.medical_specialty
Young sheep
Corynebacterium pseudotuberculosis
Prevalence
Sheep Diseases
Enzyme-Linked Immunosorbent Assay
Awassi
Age groups
Lymphadenitis
Epidemiology
Animals
Medicine
Animal Husbandry
Jordan
Sheep
Corynebacterium Infections
business.industry
Incidence
Wool
General Medicine
Antibodies, Bacterial
Caseous lymphadenitis
Flock
business
Subjects
Details
- ISSN :
- 14390450 and 09311793
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Journal of Veterinary Medicine Series B
- Accession number :
- edsair.doi.dedup.....f13fac47e2341b8a891795c78e39509b