Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7242 |
Resumo: | We conducted a cross-sectional observational study, in order to determine the frequency of anti-A. marginale and anti-B. bovis antibodies in calves from four to 12 months of age from ten farms that producing B type milk and an equal number that produce raw milk refrigerated, located in the Campo das Vertentes region of Minas Gerais state, in the period September 2008 to August 2009. Blood smears were performed, serologic testing by indirect immunofluorescence technique (IFAT), given the packed cell volume, rickettsemia, and the clinical scores of animals infected by A. marginale. In the farms that produce B type milk, the overall average frequency of seropositive calves was 94.47% (166/176) and 89.20% (157/176) for A. marginale and B. bovis, respectively. Already on the farms that produce raw milk refrigerated, the overall average frequency of A. marginale was 92.59% (149/161) and for B. bovis from 86.30% (139/161), and there was no significant difference (p > 0.05) in the frequency of calves infected for both hemoparasitic between the two systems of milk production. Statistically significant (p < 0.05) levels of rickettsemia among calves from farms with different types of milk production, where calves from properties that produce B type milk had a higher percentage of erythrocytes infected with A. marginale. In this study there was a predominance of calves with clinical score 1 (subclinical infection by A. marginale), with the overall average frequency equal (p > 0.05) among calves from properties that produce B type milk and raw milk refrigerated. The results of this study indicate that, in the Campos das Vertentes region of Minas Gerais, the production system does not interfere with the enzootic stability for A. marginale and B. bovis in calves from dairy farms B milk or raw milk refrigerated, with low probability of anaplasmosis and/or babesiosis in adults animals. |
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Semina. Ciências Agrárias (Online) |
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Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, BrazilEfeito do sistema de produção de leite sobre a estabilidade enzoótica para Anaplasma marginale e Babesia bovis em bezerras na região do Campo das Vertentes de Minas Gerais, BrasilBabesiosisAnaplasmosisDairy cattleIndirect fluorescent antibody test (IFAT)Tick fever.BabesioseAnaplasmoseBovinos leiteirosReação de imunofluorescência indireta (RIFI)Tristeza parasitária bovina.5.05.02.00-0 Medicina Veterinária PreventivaWe conducted a cross-sectional observational study, in order to determine the frequency of anti-A. marginale and anti-B. bovis antibodies in calves from four to 12 months of age from ten farms that producing B type milk and an equal number that produce raw milk refrigerated, located in the Campo das Vertentes region of Minas Gerais state, in the period September 2008 to August 2009. Blood smears were performed, serologic testing by indirect immunofluorescence technique (IFAT), given the packed cell volume, rickettsemia, and the clinical scores of animals infected by A. marginale. In the farms that produce B type milk, the overall average frequency of seropositive calves was 94.47% (166/176) and 89.20% (157/176) for A. marginale and B. bovis, respectively. Already on the farms that produce raw milk refrigerated, the overall average frequency of A. marginale was 92.59% (149/161) and for B. bovis from 86.30% (139/161), and there was no significant difference (p > 0.05) in the frequency of calves infected for both hemoparasitic between the two systems of milk production. Statistically significant (p < 0.05) levels of rickettsemia among calves from farms with different types of milk production, where calves from properties that produce B type milk had a higher percentage of erythrocytes infected with A. marginale. In this study there was a predominance of calves with clinical score 1 (subclinical infection by A. marginale), with the overall average frequency equal (p > 0.05) among calves from properties that produce B type milk and raw milk refrigerated. The results of this study indicate that, in the Campos das Vertentes region of Minas Gerais, the production system does not interfere with the enzootic stability for A. marginale and B. bovis in calves from dairy farms B milk or raw milk refrigerated, with low probability of anaplasmosis and/or babesiosis in adults animals.Foi realizado um estudo observacional do tipo transversal, com o objetivo de determinar a frequência de anticorpos anti-A. marginale e B. bovis em 337 bezerras com idade entre quatro a 12 meses, oriundas de dez propriedades produtoras de leite B e igual número de fazendas de leite cru refrigerado (leite C), na região do Campo das Vertentes de Minas Gerais, no período de setembro de 2008 a agosto de 2009. Foram realizados esfregaços sanguíneos, sorologia por meio da reação de imunofluorescência indireta (RIFI), determinado o volume globular e riquetsemia, e os escores clínicos das bezerras infectadas por A. marginale. Nas propriedades de leite B (LB), a frequência média global de bezerras soropositivas para A. marginale e B. bovis foi de 94,47% (166/176) e 89,20% (157/176), respectivamente. Nas fazendas de leite cru refrigerado (LCR), a frequência média global de bezerras soropositivas para A. marginale foi de 92,59% (149/161) e para B. bovis de 86,30% (139/161), não havendo diferença (p > 0,05) na frequência de animais infectados para ambos hemoparasitos entre os dois sistemas de produção de leite. Entretanto, houve diferença (p < 0,05) nos níveis de riquetsemia entre as bezerras provenientes de propriedades com diferentes tipos de produção leiteira, onde os animais de fazendas de LB tiveram uma maior porcentagem de hemácias infectadas por A. marginale. Neste estudo, houve um predomínio de bezerras com escore clínico 1 (infecção subclínica por A. marginale), com a frequência média global igual (p > 0,05) entre os animais de propriedades de LB e LCR. Os resultados deste estudo indicam que, na região do Campo das Vertentes de Minas Gerais, o sistema de produção não interfere na estabilidade enzoótica para A. marginale e B. bovis em bezerras provenientes de fazendas produtoras de Leite B ou leite cru refrigerado, com baixo risco de ocorrência de anaplasmose e/ou babesiose em animais adultos.UEL2012-04-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/724210.5433/1679-0359.2012v33n1p323Semina: Ciências Agrárias; Vol. 33 No. 1 (2012); 323-332Semina: Ciências Agrárias; v. 33 n. 1 (2012); 323-3321679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7242/10158Carvalho, André Henrique OliveiraSilva Júnior, Fidelis AntônioDaher, Débora OliveiraRocha, Christiane Maria Barcellos MagalhãesGuimarães, Antônio Marcosinfo:eu-repo/semantics/openAccess2015-11-19T18:37:42Zoai:ojs.pkp.sfu.ca:article/7242Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:37:42Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil Efeito do sistema de produção de leite sobre a estabilidade enzoótica para Anaplasma marginale e Babesia bovis em bezerras na região do Campo das Vertentes de Minas Gerais, Brasil |
title |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil |
spellingShingle |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil Carvalho, André Henrique Oliveira Babesiosis Anaplasmosis Dairy cattle Indirect fluorescent antibody test (IFAT) Tick fever. Babesiose Anaplasmose Bovinos leiteiros Reação de imunofluorescência indireta (RIFI) Tristeza parasitária bovina. 5.05.02.00-0 Medicina Veterinária Preventiva |
title_short |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil |
title_full |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil |
title_fullStr |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil |
title_full_unstemmed |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil |
title_sort |
Effect of milk production system on the enzootic stability to Anaplasma marginale and Babesia bovis in calves in the Campo das Vertentes region of Minas Gerais state, Brazil |
author |
Carvalho, André Henrique Oliveira |
author_facet |
Carvalho, André Henrique Oliveira Silva Júnior, Fidelis Antônio Daher, Débora Oliveira Rocha, Christiane Maria Barcellos Magalhães Guimarães, Antônio Marcos |
author_role |
author |
author2 |
Silva Júnior, Fidelis Antônio Daher, Débora Oliveira Rocha, Christiane Maria Barcellos Magalhães Guimarães, Antônio Marcos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Carvalho, André Henrique Oliveira Silva Júnior, Fidelis Antônio Daher, Débora Oliveira Rocha, Christiane Maria Barcellos Magalhães Guimarães, Antônio Marcos |
dc.subject.por.fl_str_mv |
Babesiosis Anaplasmosis Dairy cattle Indirect fluorescent antibody test (IFAT) Tick fever. Babesiose Anaplasmose Bovinos leiteiros Reação de imunofluorescência indireta (RIFI) Tristeza parasitária bovina. 5.05.02.00-0 Medicina Veterinária Preventiva |
topic |
Babesiosis Anaplasmosis Dairy cattle Indirect fluorescent antibody test (IFAT) Tick fever. Babesiose Anaplasmose Bovinos leiteiros Reação de imunofluorescência indireta (RIFI) Tristeza parasitária bovina. 5.05.02.00-0 Medicina Veterinária Preventiva |
description |
We conducted a cross-sectional observational study, in order to determine the frequency of anti-A. marginale and anti-B. bovis antibodies in calves from four to 12 months of age from ten farms that producing B type milk and an equal number that produce raw milk refrigerated, located in the Campo das Vertentes region of Minas Gerais state, in the period September 2008 to August 2009. Blood smears were performed, serologic testing by indirect immunofluorescence technique (IFAT), given the packed cell volume, rickettsemia, and the clinical scores of animals infected by A. marginale. In the farms that produce B type milk, the overall average frequency of seropositive calves was 94.47% (166/176) and 89.20% (157/176) for A. marginale and B. bovis, respectively. Already on the farms that produce raw milk refrigerated, the overall average frequency of A. marginale was 92.59% (149/161) and for B. bovis from 86.30% (139/161), and there was no significant difference (p > 0.05) in the frequency of calves infected for both hemoparasitic between the two systems of milk production. Statistically significant (p < 0.05) levels of rickettsemia among calves from farms with different types of milk production, where calves from properties that produce B type milk had a higher percentage of erythrocytes infected with A. marginale. In this study there was a predominance of calves with clinical score 1 (subclinical infection by A. marginale), with the overall average frequency equal (p > 0.05) among calves from properties that produce B type milk and raw milk refrigerated. The results of this study indicate that, in the Campos das Vertentes region of Minas Gerais, the production system does not interfere with the enzootic stability for A. marginale and B. bovis in calves from dairy farms B milk or raw milk refrigerated, with low probability of anaplasmosis and/or babesiosis in adults animals. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-05 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7242 10.5433/1679-0359.2012v33n1p323 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7242 |
identifier_str_mv |
10.5433/1679-0359.2012v33n1p323 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7242/10158 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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. 33 No. 1 (2012); 323-332 Semina: Ciências Agrárias; v. 33 n. 1 (2012); 323-332 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_ |
1799306064310566912 |