Distribuição de anticorpos para herpesvírus bovino 1 em rebanhos bovinos

Melo, C. B. de; Lobato, Zélia Inês Portela; Camargos, Marcelo Fernandes; Souza, Guilherme Nunes de; Martins, Nélson Rodrigo da Silva; Leite, Rômulo Cerqueira

doi:10.1590/s0102-09352002000600003

Cited by 6 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Esta diferença pode ser explicada, parcialmente, pelo delineamento utilizado, em que foi realizada a amostragem eqüitativa de propriedades nos diferentes tipos de exploração. Propriedades de corte se caracterizam por grandes rebanhos e geralmente apresentam maior prevalência do BoHV-1 em relação aos outros sistemas de exploração (Médici et al 2000, Melo et al 2002, Faria et al 2003. No presente estudo, as propriedades de corte corresponderam a apenas 8,5% do total de propriedades amostradas.…”

Section: Discussionunclassified

Fatores de risco associados à infecção pelo herpesvírus bovino 1 em rebanhos bovinos da região Oeste do Estado do Paraná

et al. 2008

View full text Add to dashboard Cite

The aim of this study was to determine the prevalence of positive herds and to identify the risk factors for BoHV-1 infection in breeding cattle herds in the Western region of Parana State. The statistic delineation, the serum samples and information regarding the selected farms, were the same employed in the study of bovine brucellosis for Parana State in the context of National Program for Control and Eradication of Brucellosis and Tuberculosis. The sampling was performed in two stages. Blood samples were collected from 1930 females aged ≥24 months from 295 non vaccinated herds. Serum samples were tested for antibodies against BoHV-1 using an indirect ELISA. The epidemiological questionnaire was applied on all the selected farms and aimed to obtain epidemiological data. Hundred ninety of the 295 herds were positive for BoHV-1, presenting prevalence of positive herds of 64. 41% [58.65-69.87%]. The number (≥23) of females aged 24 months (OR=2.22; IC: 1.09-4.51), purchased cattle (OR=2.68; IC: 1.48-4.82), use of common grass (OR=5.93; IC: 1.31-26.82), history of abortion in the last 12 months (OR=2.37; IC: 1.09-5.16) and presence of wildlife animals (OR=8.86; IC: 1.11-70.73) were identified as risk factors for BoHV-1 infection in the multivariate logistic regression. These results indicate that BoHV-1 infection is widespread in the studied region and that factors related to the herd characteristic and management are associated with the infection.INDEX TERMS: Prevalence, epidemiology, risk factors, bovine herpesvirus 1, indirect ELISA.

show abstract

Section: Discussionunclassified

Fatores de risco associados à infecção pelo herpesvírus bovino 1 em rebanhos bovinos da região Oeste do Estado do Paraná

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Os animais foram estratificados em três faixas etárias, sendo que a composição de cada estrato foi feita através de seleção aleatória, utilizando-se a Tabela de Números Aleatórios. A porcentagem de animais dentro de cada faixa etária foi definida de acordo com os dados obtidos por MELO et al (2002), que indicaram que a prevalência é maior em animais adultos do que em animais jovens. Com base nessa característica, foram coletadas aproximadamente 15% para animais de 6 a 12 meses, 35% para animais de 12 a 24 meses e de 50% para fêmeas acima de 24 meses.…”

Section: Amostragem E Coleta De Dadosunclassified

Soroprevalência e fatores de risco para a infecção pelo herpesvírus bovino tipo 1 (BHV-1) no Estado de Goiás, Brasil

Barbosa¹,

Brito

Alfaia

2005

Cienc. Rural

View full text Add to dashboard Cite

Palavras-chave: bovinos, herpesvírus bovino 1, soroneutralização, prevalência, fatores de risco. ABSTRACTThe main objectives of this cross-sectional study were to estimate BHV-1 seroprevalence in a population of non-vaccinated cattle in Goiás State, Brazil, and to determine potential risk factors related to the seroprevalence. It was conducted from March to September, 2002. Serum samples were collected from 6,932 animals of 892 herds from 232 municipalities in Goiás. Sera were tested for antibodies against BHV-1 using the serum neutralization test. Information regarding animals and herds were recorded through a personal interview with the farmer or farmer manager. The data were analyzed using Epi Info 6.04 and Epi Info for Windows 3.01 programs. The seroprevalence was 51.9%. Eight hundred and seventy nine out of 892 herds (98.5%) had at least one seropositive animal, and all (100%) municipalities showed at least one herd/animal positive. Only age influenced the distribution of neutralization antibodies to this virus in animals. None of the exposure variables analyzed was considered as risk factors for the infection with BHV-1 in cattle herds. With these results we conclude that the infection is spread among cattle herds of municipalities in the state of Goiás.

show abstract

“…Deste modo, foram trabalhados quatro rebanhos por município, sendo selecionadas aleatoriamente 23 fêmeas bovinas estratificadas por faixa etária. O percentual de animais dentro de cada faixa etária foi definido de acordo com dados obtidos por Melo et al (2002); Vieira et al (2003) e Barbosa, Brito e Alfaia (2005). Com base nesta característica, definiu-se 20% (n=240) para animais com idade ≤ 12 meses, 20% (n=240) para animais entre 12 e 36 meses e 60% (n=624) para animais com idade igual ou acima de 36 meses.…”

Section: Methodsunclassified

“…Lovato et al (1995),Melo et al (2002),Vieira et al. (2003), Barbosa, Brito e Alfaia (2005), Dias et al (2008) e Eiras et al (2009), que em seus estudos observaram uma maior frequência de animais reagentes para o BoHV-1 em animais mais velhos.…”

unclassified

Frequência de anticorpos contra o herpesvírus bovino tipo 1 (BoHV-1) em bovinos de corte não vacinados

et al. 2014

View full text Add to dashboard Cite

Bovine herpesvirus type 1 (BoHV-1), is responsible for clinical manifestations such as infectious bovine rhinotracheitis, abortion, conjunctivitis, infectious pustular vulvovaginitis and balanoposthitis. This virus has been responsible for major losses in different productive and reproductive herds in the country. Thus, the objective of this study was to estimate the frequency of antibodies against BoHV-1 in beef heifers not vaccinated in Microregion of Imperatriz, Maranhao, and identify the age group most affected by the virus, as well as a study of factors associated with virus infection and to evaluate the indirect ELISA using the serum neutralization (SN) as a reference standard. The study was conducted in 48 herds, cutting, distributed in 12 counties of Microregion of Imperatriz. The samples were collected from female cattle stratified into three age groups, ≤ 12 months, between 12 and 36 months and ≥ 36 months of age. The samples were subjected to two serological tests, ELISA and SN. In each herd, an epidemiological questionnaire was applied in order to obtain information on management and reproductive sanitary, for the study of risk factors. The frequency of antibodies against BoHV-1 in Microregion of Imperatriz was 63.23%, and the municipalities of Açailândia Buritirana showed the highest frequencies, both with 80.44%, the most affected age group, the Microregion, was animals aged ≥ 36 months (69.65%). Based on the results we can conclude that the frequency of antibodies against BoHV-1 is high, between the age groups most affected were the animals aged ≥ 36 months were considered risk factors for virus transmission, return to estrus (OR=1.874), recovery of animals from other states / region (OR=1.365) and the creation of goat / sheep associated with bovine (OR=1.348), the indirect ELISA technique showed moderate concordance when compared to SN technique, which is the gold standard technique for diagnosis of BoHV-1.

show abstract

Distribuição de anticorpos para herpesvírus bovino 1 em rebanhos bovinos

Cited by 6 publications

References 5 publications

Fatores de risco associados à infecção pelo herpesvírus bovino 1 em rebanhos bovinos da região Oeste do Estado do Paraná

Fatores de risco associados à infecção pelo herpesvírus bovino 1 em rebanhos bovinos da região Oeste do Estado do Paraná

Soroprevalência e fatores de risco para a infecção pelo herpesvírus bovino tipo 1 (BHV-1) no Estado de Goiás, Brasil

Frequência de anticorpos contra o herpesvírus bovino tipo 1 (BoHV-1) em bovinos de corte não vacinados

Contact Info

Product

Resources

About