| Literature DB >> 16828906 |
James Alan Thompson1, Ricardo de Miranda Henriques Leite, Vítor Salvador Picão Gonçalves, Rômulo Cerqueira Leite, Dimas A Bandeira, Geder Paulo Herrmann, Elvio Carlos Moreira, Paulo Emílio Franco Prado, Zélia Inês Portela Lobato, Cristiane Pinheiro Toscano de Brito, Andrey Pereira Lage.
Abstract
We estimated spatial hierarchal variances and age-group covariances for seroprevalence to Leptospira interrogans serovar hardjo (LeptoH), bovine viral-diarrhea virus (BVDV) and bovine herpesvirus type 1 (BoHV-1) among 2343 cattle from 72 properties sampled in the State of Paraíba, Brazil in 2000. From each property, eight animals in each of the four age categories were evaluated. The age categories studied were: pre-weaned (0-6 months), young (7-18 months), replacement (19-30 months) and mature (>30 months). Overall seroprevalence to LeptoH was 16.0% and showed clustering at all levels of the spatial hierarchy and had a high posterior probability of being negatively correlated between replacement and mature groups within herds. Seroprevalence to BoHV-1 was 46.6% and demonstrated very little clustering among levels of the spatial hierarchy and was positively correlated between young and replacement groups within herds. Seroprevalence to BVD was 22.2% and was strongly clustered within herds and was positively correlated between young and replacement age groups within herds.Entities:
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Year: 2006 PMID： 16828906 DOI： 10.1016/j.prevetmed.2006.05.010
Source DB: PubMed Journal: Prev Vet Med ISSN： 0167-5877 Impact factor: 2.670