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

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

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

Arquivos

WOS000290327200030.pdf (213.6 KB)

Data

2011-01-01

Autores

Affonso, Ingrid Bortolin

Gatti, Sandra Possebon

Alexandrino, Bruna

Oliveira, Monica Costa

Ramos de Medeiros, Andrea Souza

Buzinaro, Maria da Gloria

Samara, Samir Issa

Editor

Universidade Estadual de Londrina (UEL)

Tipo

Artigo

Direito de acesso

Acesso aberto

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 São 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.