Detection of antibodies against bovine respiratory syncytial virus (BRSV) in dairy cattle with different prevalences of bovine herpesvirus type 1 (BoHV-1) in Sao Paulo State, Brazil

Autor(es)

Affonso, Ingrid Bortolin ^[1] ; Gatti, Sandra Possebon ^[2] ; Alexandrino, Bruna ^[1] ; Oliveira, Monica Costa ^[1] ; Ramos de Medeiros, Andrea Souza ^[3] ; Buzinaro, Maria da Gloria ^[3] ; Samara, Samir Issa ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Programa Posgrad Med Vet, Fac Ciencias Agr & Vet, Sao Paulo - Brazil

^[2] Univ Estadual Paulista, Colegio Tecn Agr Jose Bonifacio, Fac Ciencias Agr & Vet, Sao Paulo - Brazil

^[3] Univ Estadual Paulista, Dept Med Vet Prevent & Reprod Anim, Fac Ciencias Agr & Vet, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SEMINA-CIENCIAS AGRARIAS; v. 32, n. 1, p. 295-299, 2011.
• Citações Web of Science: 3

Resumo

Serum samples from three dairy farms classified as high (1, 78.6%), medium (2, 40.0%) and low (3, 1.6%) prevalence for bovine herpesvirus type 1 (BoHV-1) from Sao Paulo State, were collected to analyze the prevalence to the bovine respiratory syncytial virus (BRSV) by virus neutralization test. The BRSV observed prevalences for farms 1, 2, and 3 were 45.61%, 84.42%, and 54.09%, respectively. Farm 2 showed higher prevalence to BRSV (P < 0.0001) than farms 1 and 3, which were equivalent (P = 0.2291). Two risk factors, herd size and milder climate conditions, were associated to BRSV. The prevalence of BRSV in farm 1 was statistically lower than BoHV-1 prevalence (P < 0.0001). On the other side, farms 2 and 3 have prevalences of BRSV higher than of BoHV-1 (P < 0.0001 in both comparisons). We may conclude, at least for the studied farms, that BRSV and BoHV-1 did not interact and the differences observed between BRSV and BoHV-1 prevalences into each herd did not have epidemiological importance. (AU)

• Processo FAPESP: 08/56693-6 - Monitoração da ocorrência do vírus respiratório sincicial bovino (BRSV) em plantéis leiteiros infectados pelo herpesvírus bovino tipo 1 (BoHV-1)
• Beneficiário: Samir Issa Samara
• Modalidade de apoio: Auxílio à Pesquisa - Regular