Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30447 |
Resumo: | The production performance of a livestock herd can be compromised by various diseases. In sheep, maedi-visna (MV) infections, which have a chronic nature, are caused by a virus (maedi-visna virus (MVV)) belonging to the genus Lentivirus of the Retroviridae family. The infection can cause significant economic losses and has considerable health impacts on sheep breeding in production systems. Due to the importance of this disease in sheep flocks, the objective was to conduct a serosurvey of MVV in the states of Ceará (CE), Rio Grande do Norte (RN), Paraíba (PB), and Sergipe (SE). A total of, 3332 serum samples were collected in the four states, 1011 in CE, 931 in RN, 459 in PB, and 931 in SE, with the number of samples proportional to the actual herd size of each state. The samples were analyzed using the agar gel microimmunodiffusion test (AGID). Reproducers were revaluated using western blotting (WB). In addition to this serological survey, we administered an investigative questionnaire to identify possible risk factors that facilitate the introduction and spread of diseases (location, category, sex, breed type, creation system, production, herd size, and association with goats). After analysis of the sera using the AGID test, there was zero prevalence. Revaluating breeders by WB revealed a 5.5% prevalence of MV in the four states studied, with prevalences for the states of CE, RN, Paraiba, and SE of 2.3% (2/88), 10.4% (8/77), 3.6% (1/28), and 4.7% (2/42), respectively, corresponding to 13 breeders containing antibodies to the virus. These findings emphasized that the choice of diagnostic tests is extremely important for the early detection of seropositive animals and thus the prevention of the spread of the virus among herds in the region. |
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Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe StatesEstudo soroepidemiológico da maedi-visna em ovinos nos estados do Ceará, Rio Grande doDiseaseSheepMaedi-visnaLentivirusesSerology.EnfermidadeOvinosMaedi-visnaLentivirusSorologia.The production performance of a livestock herd can be compromised by various diseases. In sheep, maedi-visna (MV) infections, which have a chronic nature, are caused by a virus (maedi-visna virus (MVV)) belonging to the genus Lentivirus of the Retroviridae family. The infection can cause significant economic losses and has considerable health impacts on sheep breeding in production systems. Due to the importance of this disease in sheep flocks, the objective was to conduct a serosurvey of MVV in the states of Ceará (CE), Rio Grande do Norte (RN), Paraíba (PB), and Sergipe (SE). A total of, 3332 serum samples were collected in the four states, 1011 in CE, 931 in RN, 459 in PB, and 931 in SE, with the number of samples proportional to the actual herd size of each state. The samples were analyzed using the agar gel microimmunodiffusion test (AGID). Reproducers were revaluated using western blotting (WB). In addition to this serological survey, we administered an investigative questionnaire to identify possible risk factors that facilitate the introduction and spread of diseases (location, category, sex, breed type, creation system, production, herd size, and association with goats). After analysis of the sera using the AGID test, there was zero prevalence. Revaluating breeders by WB revealed a 5.5% prevalence of MV in the four states studied, with prevalences for the states of CE, RN, Paraiba, and SE of 2.3% (2/88), 10.4% (8/77), 3.6% (1/28), and 4.7% (2/42), respectively, corresponding to 13 breeders containing antibodies to the virus. These findings emphasized that the choice of diagnostic tests is extremely important for the early detection of seropositive animals and thus the prevention of the spread of the virus among herds in the region.O desempenho produtivo de um rebanho pode ser comprometido por diversas enfermidades. Em relação aos ovinos, à ocorrência da Maedi - Visna (MV) doença infecciosa, de caráter crônico, causada por um vírus (Maedi-Visna Vírus – MVV) pertencente ao gênero Lentivirus da família Retroviridae. A infecção pode causar importantes perdas econômicas e elevados impactos sanitários nos sistemas de produção da ovinocultura. Em virtude da importância desta enfermidade nos rebanhos ovinos, o objetivo do estudo foi realizar um levantamento soroepidemiológico do vírus da Maedi - Visna (MVV) nos estados do Ceará (CE), Rio Grande do Norte (RN), Paraíba (PB) e Sergipe (SE). Para tanto, foram coletadas 3332 amostras de sangue nos quatro estados, sendo 1011 do CE, 931 do RN, 459 da PB e 931 de SE, sendo este número de amostras proporcional ao rebanho efetivo de cada estado. As amostras foram analisadas utilizando o teste de microimunodifusão em gel de ágar (IDGA). Os reprodutores foram reavaliados pela técnica de Western Blot (WB). Associado a esse levantamento sorológico foi aplicado um questionário epidemiológico para identificar possíveis fatores de risco que podem facilitar a introdução e disseminação de enfermidades (localização, categoria, sexo, tipo racial, sistema de criação, produção, tamanho de rebanho e associação com caprinos). Após análise dos soros pelo teste de IDGA foi verificada uma soroprevalência nula nos rebanhos estudados. Os reprodutores reavaliados pelo WB apresentaram uma prevalência geral de 5,5% da MV nos quatro estados estudados, sendo que os estados do Ceará, Rio Grande do Norte, Paraíba e Sergipe apresentaram, 2,3% (2/88), 10,4% (8/77), 3,6% (1/28) e 4,7% (2/42) respectivamente, correspondendo a 13 reprodutores que apresentaram presença de anticorpos. Diante desses resultados, ressalta-se que a escolha dos testes diagnósticos é de extrema importância para que haja uma detecção precoce de animais soropositivos, e assim evitar a disseminação do vírus nos rebanhos da região.UEL2018-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3044710.5433/1679-0359.2018v39n5p2017Semina: Ciências Agrárias; Vol. 39 No. 5 (2018); 2017-2028Semina: Ciências Agrárias; v. 39 n. 5 (2018); 2017-20281679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30447/24311Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessAlves, Samilly MesquitaTeixeira, Maria Fátima da SilvaPinheiro, Raymundo RizaldoAlves, Francisco Selmo FernandesLima, Ana Milena CésarFarias, Daniele Alves deSantos, Vanderlan Warlington Souza dosAzevedo, Dalva Alana Aragão deMartins, Gabrielle RosemblitAguiar, Tereza D Avila de Freitas2022-10-20T17:57:28Zoai:ojs.pkp.sfu.ca:article/30447Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T17:57:28Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States Estudo soroepidemiológico da maedi-visna em ovinos nos estados do Ceará, Rio Grande do |
title |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States |
spellingShingle |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States Alves, Samilly Mesquita Disease Sheep Maedi-visna Lentiviruses Serology. Enfermidade Ovinos Maedi-visna Lentivirus Sorologia. |
title_short |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States |
title_full |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States |
title_fullStr |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States |
title_full_unstemmed |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States |
title_sort |
Seroepidemiological study of maedi-visna in sheep in Ceara, Rio Grande do Norte, Paraíba, and Sergipe States |
author |
Alves, Samilly Mesquita |
author_facet |
Alves, Samilly Mesquita Teixeira, Maria Fátima da Silva Pinheiro, Raymundo Rizaldo Alves, Francisco Selmo Fernandes Lima, Ana Milena César Farias, Daniele Alves de Santos, Vanderlan Warlington Souza dos Azevedo, Dalva Alana Aragão de Martins, Gabrielle Rosemblit Aguiar, Tereza D Avila de Freitas |
author_role |
author |
author2 |
Teixeira, Maria Fátima da Silva Pinheiro, Raymundo Rizaldo Alves, Francisco Selmo Fernandes Lima, Ana Milena César Farias, Daniele Alves de Santos, Vanderlan Warlington Souza dos Azevedo, Dalva Alana Aragão de Martins, Gabrielle Rosemblit Aguiar, Tereza D Avila de Freitas |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Alves, Samilly Mesquita Teixeira, Maria Fátima da Silva Pinheiro, Raymundo Rizaldo Alves, Francisco Selmo Fernandes Lima, Ana Milena César Farias, Daniele Alves de Santos, Vanderlan Warlington Souza dos Azevedo, Dalva Alana Aragão de Martins, Gabrielle Rosemblit Aguiar, Tereza D Avila de Freitas |
dc.subject.por.fl_str_mv |
Disease Sheep Maedi-visna Lentiviruses Serology. Enfermidade Ovinos Maedi-visna Lentivirus Sorologia. |
topic |
Disease Sheep Maedi-visna Lentiviruses Serology. Enfermidade Ovinos Maedi-visna Lentivirus Sorologia. |
description |
The production performance of a livestock herd can be compromised by various diseases. In sheep, maedi-visna (MV) infections, which have a chronic nature, are caused by a virus (maedi-visna virus (MVV)) belonging to the genus Lentivirus of the Retroviridae family. The infection can cause significant economic losses and has considerable health impacts on sheep breeding in production systems. Due to the importance of this disease in sheep flocks, the objective was to conduct a serosurvey of MVV in the states of Ceará (CE), Rio Grande do Norte (RN), Paraíba (PB), and Sergipe (SE). A total of, 3332 serum samples were collected in the four states, 1011 in CE, 931 in RN, 459 in PB, and 931 in SE, with the number of samples proportional to the actual herd size of each state. The samples were analyzed using the agar gel microimmunodiffusion test (AGID). Reproducers were revaluated using western blotting (WB). In addition to this serological survey, we administered an investigative questionnaire to identify possible risk factors that facilitate the introduction and spread of diseases (location, category, sex, breed type, creation system, production, herd size, and association with goats). After analysis of the sera using the AGID test, there was zero prevalence. Revaluating breeders by WB revealed a 5.5% prevalence of MV in the four states studied, with prevalences for the states of CE, RN, Paraiba, and SE of 2.3% (2/88), 10.4% (8/77), 3.6% (1/28), and 4.7% (2/42), respectively, corresponding to 13 breeders containing antibodies to the virus. These findings emphasized that the choice of diagnostic tests is extremely important for the early detection of seropositive animals and thus the prevention of the spread of the virus among herds in the region. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-08-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30447 10.5433/1679-0359.2018v39n5p2017 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30447 |
identifier_str_mv |
10.5433/1679-0359.2018v39n5p2017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30447/24311 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 39 No. 5 (2018); 2017-2028 Semina: Ciências Agrárias; v. 39 n. 5 (2018); 2017-2028 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306078391894016 |