Herd risk factors associated with sero-prevalence of Maedi-Visna in the Manitoba sheep population.
Can Vet J
; 51(4): 385-90, 2010 Apr.
Article
em En
| MEDLINE
| ID: mdl-20592827
ABSTRACT
Disease associated with Maedi-Visna infection results in substantial economic losses in affected sheep producing areas of the world. A survey was conducted to estimate herd and individual seroprevalence in the province of Manitoba and evaluate risk factors for seropositive herds. Of 2207 sheep sampled from 77 selected sheep flocks, the animal level seroprevalence was 2.47% and herd level seroprevalence was 25.10%. The herd-level factors of presence of clinical skin disease, herd size of > 70, history of musculoskeletal/lameness abnormalities, and the purchase of new stock (> 50) in the last 1 to 5 y, showed significant associations with seropositive herd status. The study documented a remarkable stability of low seroprevalence in the province over a 20-year period in the absence of a systematic disease control program.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vírus Visna-Maedi
/
Pneumonia Intersticial Progressiva dos Ovinos
/
Anticorpos Antivirais
Tipo de estudo:
Etiology_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Can Vet J
Ano de publicação:
2010
Tipo de documento:
Article