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Antibodies against Bovine herpesvirus 1 in dairy herds in the state of Espirito Santo, Brasil
by
Tobias, Fernando Luiz
, Santos, Marcos Antônio dos
, Santos, Marcus Rebouças
, Saraiva, Giuliana Loreto
, Moreira, Maria Aparecida Scatamburlo
, Ferreira, Hanna Carolina Campos
, Almeida, Márcia Rogéria de
, Silva Júnior, Abelardo
, Tafuri, Natália Filardi
, Santos, Giancarlo Magalhães dos
in
AGRICULTURE, MULTIDISCIPLINARY
/ BoHV-1
/ Espírito Santo
/ Rinotraqueíte infecciosa bovina (IBR)
/ vacas leiteiras
/ vírus-neutralização
2014
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Antibodies against Bovine herpesvirus 1 in dairy herds in the state of Espirito Santo, Brasil
by
Tobias, Fernando Luiz
, Santos, Marcos Antônio dos
, Santos, Marcus Rebouças
, Saraiva, Giuliana Loreto
, Moreira, Maria Aparecida Scatamburlo
, Ferreira, Hanna Carolina Campos
, Almeida, Márcia Rogéria de
, Silva Júnior, Abelardo
, Tafuri, Natália Filardi
, Santos, Giancarlo Magalhães dos
in
AGRICULTURE, MULTIDISCIPLINARY
/ BoHV-1
/ Espírito Santo
/ Rinotraqueíte infecciosa bovina (IBR)
/ vacas leiteiras
/ vírus-neutralização
2014
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Antibodies against Bovine herpesvirus 1 in dairy herds in the state of Espirito Santo, Brasil
by
Tobias, Fernando Luiz
, Santos, Marcos Antônio dos
, Santos, Marcus Rebouças
, Saraiva, Giuliana Loreto
, Moreira, Maria Aparecida Scatamburlo
, Ferreira, Hanna Carolina Campos
, Almeida, Márcia Rogéria de
, Silva Júnior, Abelardo
, Tafuri, Natália Filardi
, Santos, Giancarlo Magalhães dos
in
AGRICULTURE, MULTIDISCIPLINARY
/ BoHV-1
/ Espírito Santo
/ Rinotraqueíte infecciosa bovina (IBR)
/ vacas leiteiras
/ vírus-neutralização
2014
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Antibodies against Bovine herpesvirus 1 in dairy herds in the state of Espirito Santo, Brasil
Journal Article
Antibodies against Bovine herpesvirus 1 in dairy herds in the state of Espirito Santo, Brasil
2014
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Overview
Bovine herpesvirus 1 (BoHV-1) causes major losses in worldwide livestock, affecting the respiratory and reproductive tracts of bovine. In the past decades, the number of cases in Brazil has been gradually increasing. Therefore, it is important to assess the distribution of infection in different regions of the country. In the state of Espírito Santo (ES) the BoHV 1 infection rate in dairy cattle herds is unknown. Thus, the aim of this study was to detect neutralizing antibodies against BoHV-1 in serum samples from 1,161 non-vaccinated cows from 59 dairy cattle herds in 23 municipalities of the Metropolitan, North, Northwest and South macro-regions. The identification of seropositive cows was evaluated by the virus neutralization test. The results showed that of all serum samples evaluated 775 (66.75%) had neutralizing antibodies against BoHV-1. Moreover, all herds were found positive; however, the percentage of positive cows varied among regions; 49.06%, 62.15%, 67.21% and 80.04% for the Metropolitan, South, North and Northwest macro-regions, respectively. In this study, the results clearly indicate the dissemination of the viral agent in dairy cattle in the ES state, requiring the monitoring and control of diseases related to BoHV-1 infection. O herpesvírus bovino 1 (Bovine herpesvirus 1 - BoHV-1) causa grandes prejuízos econômicos à pecuária bovina mundial, por comprometer os sistemas respiratório e reprodutivo de bovinos de corte e leiteiros. Nas últimas décadas, os registros de casos clínicos ocasionados pelo BoHV-1, no Brasil, mostram que têm aumentado gradualmente, o que torna importante o delineamento de estudos que mostrem a distribuição da infecção nas diversas regiões do país. O objetivo deste estudo foi investigar a frequência de anticorpos anti-BoHV-1 em rebanhos bovinos leiteiros do Estado do Espírito Santo (ES), região ainda carente de informações sobre a distribuição desse patógeno. Para o estudo, foram utilizadas amostras de soro de bovinos leiteiros, não vacinados contra o BoHV-1, de 1.161 animais, provenientes de 59 rebanhos, oriundos de 23 municípios pertencentes às macrorregiões metropolitana, norte, noroeste e sul do ES. Para a identificação de animais soropositivos, foi aplicada a técnica de vírus-neutralização em microplacas. Das amostras de soros avaliadas, 775 (66,75%) apresentaram anticorpos neutralizantes contra BoHV-1, sendo todos os rebanhos considerados positivos. As percentagens das frequências de animais positivos foram bastante variadas, apresentando 49,06, 62,15, 67,21 e 80,04%, para as macrorregiões metropolitana, sul, norte e noroeste, respectivamente. Neste estudo, os resultados claramente indicam a circulação do agente viral no rebanho bovino leiteiro do ES, sendo necessário o controle e monitoramento das enfermidades relacionadas com o BoHV-1.
Publisher
Universidade Federal de Viçosa,Universidade Federal De Viçosa
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