Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/45086 |
Resumo: | Maedi-Visna (MV) is a chronic progressive multisystem disease that may be asymptomatic for several months or years, but progress rapidly, and may result in death, when signs and symptoms evolve. Viral elimination occurs mainly through direct contact with positive animal secretions. There is no vaccine or treatment, and prophylaxis is necessary for the health of the herd. The present study aimed to verify the seropositivity of MV and evaluate the factors associated with the risk in sheep herds in Paraná. A total of 1549 serum samples were collected from 90 properties. An epidemiological questionnaire was applied to each property, and the variables were analyzed using the Epi-info program and R environment. Of the 1549 samples analyzed, 22 were positive (1.4%) for the micro-AGID test in 13.3% of the properties. Our study demonstrated variables associated with the prevention and the risk of seropositivity to MVV. Conducting a breeding season, supplying concentrated feed, and separating the breeding stock before birth were factors associated with protection, whereas the previous occurrence of problems with lice, breeding on pasture, and keeping cats close to the flock were factors associated with risk. The seropositivity observed in the present study suggests the circulation of MVV in sheep herds in Paraná, which reinforces the need to implement prevention and control measures since the level of technification may be associated with the occurrence of anti-MVV antibodies in herds. |
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Semina. Ciências Agrárias (Online) |
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Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South BrasilGrau de tecnificação do rebanho ovino pode estar associado a soropositividade para o maedi-visna vírus no Sul do BrasilLentivirusesSmall ruminantsPneumoniaRetrovirusMaedi-visna.LentivirosesPequenos ruminantesPneumoniaRetrovírusMaedi-Visna.Maedi-Visna (MV) is a chronic progressive multisystem disease that may be asymptomatic for several months or years, but progress rapidly, and may result in death, when signs and symptoms evolve. Viral elimination occurs mainly through direct contact with positive animal secretions. There is no vaccine or treatment, and prophylaxis is necessary for the health of the herd. The present study aimed to verify the seropositivity of MV and evaluate the factors associated with the risk in sheep herds in Paraná. A total of 1549 serum samples were collected from 90 properties. An epidemiological questionnaire was applied to each property, and the variables were analyzed using the Epi-info program and R environment. Of the 1549 samples analyzed, 22 were positive (1.4%) for the micro-AGID test in 13.3% of the properties. Our study demonstrated variables associated with the prevention and the risk of seropositivity to MVV. Conducting a breeding season, supplying concentrated feed, and separating the breeding stock before birth were factors associated with protection, whereas the previous occurrence of problems with lice, breeding on pasture, and keeping cats close to the flock were factors associated with risk. The seropositivity observed in the present study suggests the circulation of MVV in sheep herds in Paraná, which reinforces the need to implement prevention and control measures since the level of technification may be associated with the occurrence of anti-MVV antibodies in herds.A Maedi-Visna (MV) é uma doença multissistêmica de caráter crônico-progressivo, os animais infectados podem passar meses e anos sem demonstrarem sinais clínicos e, após desenvolverem sinais, evoluem rapidamente para a morte. A eliminação viral ocorre principalmente por meio do contato direto com secreções de animais positivos. Não existe vacina ou tratamento, sendo necessária a profilaxia para a sanidade do rebanho. O objetivo do presente estudo foi verificar a soropositividade para o MV e avaliar os fatores associados ao risco em rebanhos ovinos do Paraná. Foram colhidas 1549 amostras de soro, oriundas de 90 propriedades. A cada propriedade foi aplicado um questionário epidemiológico, cujas variáveis foram analisadas pelo programa Epi-info e ambiente R. Das 1549 amostras analisadas, 22 foram positivas (1,4%) ao teste de micro-IDGA, em 13,3% das propriedades. Nosso estudo demonstrou variáveis associadas à proteção e ao risco para a ocorrência de anticorpos anti-MVV nas propriedades podem estar relacionadas à tecnificação da mesma. Realização de estação de monta, fornecimento de ração concentrada e separação das matrizes antes do parto foram fatores associados à proteção, enquanto que a ocorrência prévia de problemas com piolhos, criação a pasto e manter gatos junto ao rebanho foram fatores associados ao risco. A soropositividade observada no presente estudo sugere a circulação do MVV nos rebanhos ovinos do Paraná, o que reforça a necessidade de implementação de medidas de prevenção e controle, uma vez que a tecnificação pode interferir na ocorrência de anticorpos anti-MVV nos rebanhos.UEL2023-06-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4508610.5433/1679-0359.2023v44n2p767Semina: Ciências Agrárias; Vol. 44 No. 2 (2023); 767-780Semina: Ciências Agrárias; v. 44 n. 2 (2023); 767-7801679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45086/48987Copyright (c) 2023 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessVieira, Marcos ViníciusCaldart, Eloiza TelesRavazzolo, Ana PaulaRodrigues, Silvio Manoel CanguçuMinho, Alessandro PelegrineCavalcante, Antônio Cézar RochaFilgueiras, Fernanda PinheiroNavarro, Italmar TeodoricoRomanelli, Paulo RobertoOkano, Werner2023-07-04T19:58:14Zoai:ojs.pkp.sfu.ca:article/45086Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-07-04T19:58:14Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil Grau de tecnificação do rebanho ovino pode estar associado a soropositividade para o maedi-visna vírus no Sul do Brasil |
title |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil |
spellingShingle |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil Vieira, Marcos Vinícius Lentiviruses Small ruminants Pneumonia Retrovirus Maedi-visna. Lentiviroses Pequenos ruminantes Pneumonia Retrovírus Maedi-Visna. |
title_short |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil |
title_full |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil |
title_fullStr |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil |
title_full_unstemmed |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil |
title_sort |
Degree of technification of the sheep herd may be associated with seropositivity for the maedi-visna virus In South Brasil |
author |
Vieira, Marcos Vinícius |
author_facet |
Vieira, Marcos Vinícius Caldart, Eloiza Teles Ravazzolo, Ana Paula Rodrigues, Silvio Manoel Canguçu Minho, Alessandro Pelegrine Cavalcante, Antônio Cézar Rocha Filgueiras, Fernanda Pinheiro Navarro, Italmar Teodorico Romanelli, Paulo Roberto Okano, Werner |
author_role |
author |
author2 |
Caldart, Eloiza Teles Ravazzolo, Ana Paula Rodrigues, Silvio Manoel Canguçu Minho, Alessandro Pelegrine Cavalcante, Antônio Cézar Rocha Filgueiras, Fernanda Pinheiro Navarro, Italmar Teodorico Romanelli, Paulo Roberto Okano, Werner |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Vieira, Marcos Vinícius Caldart, Eloiza Teles Ravazzolo, Ana Paula Rodrigues, Silvio Manoel Canguçu Minho, Alessandro Pelegrine Cavalcante, Antônio Cézar Rocha Filgueiras, Fernanda Pinheiro Navarro, Italmar Teodorico Romanelli, Paulo Roberto Okano, Werner |
dc.subject.por.fl_str_mv |
Lentiviruses Small ruminants Pneumonia Retrovirus Maedi-visna. Lentiviroses Pequenos ruminantes Pneumonia Retrovírus Maedi-Visna. |
topic |
Lentiviruses Small ruminants Pneumonia Retrovirus Maedi-visna. Lentiviroses Pequenos ruminantes Pneumonia Retrovírus Maedi-Visna. |
description |
Maedi-Visna (MV) is a chronic progressive multisystem disease that may be asymptomatic for several months or years, but progress rapidly, and may result in death, when signs and symptoms evolve. Viral elimination occurs mainly through direct contact with positive animal secretions. There is no vaccine or treatment, and prophylaxis is necessary for the health of the herd. The present study aimed to verify the seropositivity of MV and evaluate the factors associated with the risk in sheep herds in Paraná. A total of 1549 serum samples were collected from 90 properties. An epidemiological questionnaire was applied to each property, and the variables were analyzed using the Epi-info program and R environment. Of the 1549 samples analyzed, 22 were positive (1.4%) for the micro-AGID test in 13.3% of the properties. Our study demonstrated variables associated with the prevention and the risk of seropositivity to MVV. Conducting a breeding season, supplying concentrated feed, and separating the breeding stock before birth were factors associated with protection, whereas the previous occurrence of problems with lice, breeding on pasture, and keeping cats close to the flock were factors associated with risk. The seropositivity observed in the present study suggests the circulation of MVV in sheep herds in Paraná, which reinforces the need to implement prevention and control measures since the level of technification may be associated with the occurrence of anti-MVV antibodies in herds. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-06-21 |
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/45086 10.5433/1679-0359.2023v44n2p767 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/45086 |
identifier_str_mv |
10.5433/1679-0359.2023v44n2p767 |
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/45086/48987 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 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. 44 No. 2 (2023); 767-780 Semina: Ciências Agrárias; v. 44 n. 2 (2023); 767-780 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_ |
1799306086123044864 |