Dermatophilosis in Nelore calves in Mato Grosso do Sul

Detalhes bibliográficos
Autor(a) principal: Bacha, Flávia Barbieri
Data de Publicação: 2014
Outros Autores: Faccin, Tatiane Cargnin, Lima, Stephanie Carrelo, Leal, Cássia Rejane Brito, Lemos, Ricardo Antônio Amaral
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/16821
Resumo: The objective of this study was to describe two outbreaks of dermatophilosis in Nelore calves in the State of Mato Grosso do Sul with epidemiological characteristics peculiar to the Midwest. Morbidity and mortality rates were 50% and 0.0025% in the outbreak 1, and 12.5% and 10% in the outbreak 2, respectively. Only Nelore calves aging between 5 and 60 days were affected. Most cases occurred on pastures of Brachiaria brizantha during the rainy season. In both outbreaks, the signs started with skin thickening followed by weeping and crusting around the eyes and muzzle. In more severe cases, lesions disseminated throughout the face and the body, evolving to generalized marked thickening of the skin and wrinkling. Histology of skin lesions showed suppurative dermatitis and hyperkeratosis. The diagnosis was confirmed by viewing basophilic filamentous structures morphologically consistent with Dermatophilus congolensis in Gram stained smears. The treatment with streptomycin, oxytetracycline or penicillin associated with streptomycin used in calves demonstrated to be effective. The disease has been misdiagnosed, by the farmers, with hepatic photosensitization caused by Brachiaria spp. ingestion. This article discusses these results with the aim to help in the correct diagnosis of dermatophilosis, which is important to achieve the adequate treatment and effective control measures to minimize the losses caused by this disease.
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spelling Dermatophilosis in Nelore calves in Mato Grosso do SulDermatofilose em bezerros da raça Nelore no Mato Grosso do SulDermatophilus congolensisDermatitisBrachiaria brizanthaCattle.Dermatophilus congolensisDermatiteBrachiaria brizanthaBovinos.Doenças bacterianasThe objective of this study was to describe two outbreaks of dermatophilosis in Nelore calves in the State of Mato Grosso do Sul with epidemiological characteristics peculiar to the Midwest. Morbidity and mortality rates were 50% and 0.0025% in the outbreak 1, and 12.5% and 10% in the outbreak 2, respectively. Only Nelore calves aging between 5 and 60 days were affected. Most cases occurred on pastures of Brachiaria brizantha during the rainy season. In both outbreaks, the signs started with skin thickening followed by weeping and crusting around the eyes and muzzle. In more severe cases, lesions disseminated throughout the face and the body, evolving to generalized marked thickening of the skin and wrinkling. Histology of skin lesions showed suppurative dermatitis and hyperkeratosis. The diagnosis was confirmed by viewing basophilic filamentous structures morphologically consistent with Dermatophilus congolensis in Gram stained smears. The treatment with streptomycin, oxytetracycline or penicillin associated with streptomycin used in calves demonstrated to be effective. The disease has been misdiagnosed, by the farmers, with hepatic photosensitization caused by Brachiaria spp. ingestion. This article discusses these results with the aim to help in the correct diagnosis of dermatophilosis, which is important to achieve the adequate treatment and effective control measures to minimize the losses caused by this disease.O objetivo deste trabalho foi descrever dois surtos de dermatofilose em bezerros da raça Nelore no Estado de Mato Grosso do Sul com características epidemiológicas peculiares à região Centro-Oeste. As taxas de morbidade e letalidade foram de 50% e 0,0025% no surto 1 e, 12,5% e 10% no surto 2, respectivamente. Apenas bezerros da raça Nelore com idade entre 5 e 60 dias foram afetados. A maioria dos casos ocorreu em pastagens de Brachiaria brizantha durante o período chuvoso do ano. Nos dois surtos, os sinais se iniciavam com espessamento da pele, seguido por lacrimejamento e formação de crostas ao redor dos olhos e focinho. Nos casos mais graves, as lesões disseminavam-se pela face e por todo o corpo, evoluindo para acentuado espessamento generalizado da pele, com formação de dobras. As lesões de pele caracterizaram-se, histopatologicamente, por dermatite supurativa e hiperqueratose. O diagnóstico foi confirmado pela visualização de estruturas basofílicas filamentosas morfologicamente compatíveis com Dermatophilus congolensis em esfregaços corados por Gram. Os tratamentos com estreptomicina, oxitetraciclina ou penicilina associada à estreptomicina utilizados nos bezerros demonstraram ser eficientes. A doença foi confundida pelos produtores com fotossensibilização hepatógena causada por ingestão de Brachiaria spp. Este artigo discute estes resultados com vistas a auxiliar o diagnóstico correto da dermatofilose que é importante para a realização do tratamento adequado e de medidas de controle eficazes, minimizando as perdas causadas por esta doença. UEL2014-08-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1682110.5433/1679-0359.2014v35n4p1947Semina: Ciências Agrárias; Vol. 35 No. 4 (2014); 1947-1954Semina: Ciências Agrárias; v. 35 n. 4 (2014); 1947-19541679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16821/pdf_386Copyright (c) 2014 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessBacha, Flávia BarbieriFaccin, Tatiane CargninLima, Stephanie CarreloLeal, Cássia Rejane BritoLemos, Ricardo Antônio Amaral2023-01-16T13:06:54Zoai:ojs.pkp.sfu.ca:article/16821Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-01-16T13:06:54Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Dermatophilosis in Nelore calves in Mato Grosso do Sul
Dermatofilose em bezerros da raça Nelore no Mato Grosso do Sul
title Dermatophilosis in Nelore calves in Mato Grosso do Sul
spellingShingle Dermatophilosis in Nelore calves in Mato Grosso do Sul
Bacha, Flávia Barbieri
Dermatophilus congolensis
Dermatitis
Brachiaria brizantha
Cattle.
Dermatophilus congolensis
Dermatite
Brachiaria brizantha
Bovinos.
Doenças bacterianas
title_short Dermatophilosis in Nelore calves in Mato Grosso do Sul
title_full Dermatophilosis in Nelore calves in Mato Grosso do Sul
title_fullStr Dermatophilosis in Nelore calves in Mato Grosso do Sul
title_full_unstemmed Dermatophilosis in Nelore calves in Mato Grosso do Sul
title_sort Dermatophilosis in Nelore calves in Mato Grosso do Sul
author Bacha, Flávia Barbieri
author_facet Bacha, Flávia Barbieri
Faccin, Tatiane Cargnin
Lima, Stephanie Carrelo
Leal, Cássia Rejane Brito
Lemos, Ricardo Antônio Amaral
author_role author
author2 Faccin, Tatiane Cargnin
Lima, Stephanie Carrelo
Leal, Cássia Rejane Brito
Lemos, Ricardo Antônio Amaral
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Bacha, Flávia Barbieri
Faccin, Tatiane Cargnin
Lima, Stephanie Carrelo
Leal, Cássia Rejane Brito
Lemos, Ricardo Antônio Amaral
dc.subject.por.fl_str_mv Dermatophilus congolensis
Dermatitis
Brachiaria brizantha
Cattle.
Dermatophilus congolensis
Dermatite
Brachiaria brizantha
Bovinos.
Doenças bacterianas
topic Dermatophilus congolensis
Dermatitis
Brachiaria brizantha
Cattle.
Dermatophilus congolensis
Dermatite
Brachiaria brizantha
Bovinos.
Doenças bacterianas
description The objective of this study was to describe two outbreaks of dermatophilosis in Nelore calves in the State of Mato Grosso do Sul with epidemiological characteristics peculiar to the Midwest. Morbidity and mortality rates were 50% and 0.0025% in the outbreak 1, and 12.5% and 10% in the outbreak 2, respectively. Only Nelore calves aging between 5 and 60 days were affected. Most cases occurred on pastures of Brachiaria brizantha during the rainy season. In both outbreaks, the signs started with skin thickening followed by weeping and crusting around the eyes and muzzle. In more severe cases, lesions disseminated throughout the face and the body, evolving to generalized marked thickening of the skin and wrinkling. Histology of skin lesions showed suppurative dermatitis and hyperkeratosis. The diagnosis was confirmed by viewing basophilic filamentous structures morphologically consistent with Dermatophilus congolensis in Gram stained smears. The treatment with streptomycin, oxytetracycline or penicillin associated with streptomycin used in calves demonstrated to be effective. The disease has been misdiagnosed, by the farmers, with hepatic photosensitization caused by Brachiaria spp. ingestion. This article discusses these results with the aim to help in the correct diagnosis of dermatophilosis, which is important to achieve the adequate treatment and effective control measures to minimize the losses caused by this disease.
publishDate 2014
dc.date.none.fl_str_mv 2014-08-27
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
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/16821
10.5433/1679-0359.2014v35n4p1947
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16821
identifier_str_mv 10.5433/1679-0359.2014v35n4p1947
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/16821/pdf_386
dc.rights.driver.fl_str_mv Copyright (c) 2014 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2014 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. 35 No. 4 (2014); 1947-1954
Semina: Ciências Agrárias; v. 35 n. 4 (2014); 1947-1954
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
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