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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
20/03/2025 |
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Data da última atualização: |
25/03/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO, C. V. de; DOMINGUES, R.; COUTINHO, C. de C.; HONÓRIO, N. T. de B. S.; REIS, D. R. de L.; FERREIRA-MACHADO, A. B.; CARVALHO, W. A.; GASPAR, E. B.; MARTINS, M. F. |
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Afiliação: |
CLARISSA VIDAL DE CARVALHO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; ROBERT DOMINGUES, CNPGL; CINTHIA DE CARVALHO COUTINHO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; NICOLE TAFNES DE BRITO SILVA HONÓRIO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA, JUIZ DE FORA; DANIELE RIBEIRO DE LIMA REIS FAZA, CNPGL; ALESSANDRA BARBOSA FERREIRA-MACHADO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; WANESSA ARAUJO CARVALHO, CNPGL; EMANUELLE BALDO GASPAR, CNPGL; MARTA FONSECA MARTINS, CNPGL. |
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Título: |
First report of Moraxella oculi in Brazil in an infectious bovine keratoconjunctivitis outbreak. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Veterinary Research Communications, v. 49, article 143, 2025. |
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DOI: |
https://doi.org/10.1007/s11259-025-10713-z |
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Idioma: |
Inglês |
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Conteúdo: |
Infectious Bovine Keratoconjunctivitis (IBK) is a widespread ocular disease that affects dairy and beef cattle worldwide, caused by Gram-negative bacteria from the genus Moraxella. It is the most common eye disease in cattle, with symptoms including tearing, ocular pain, corneal opacity, photophobia, ulceration, and, in severe cases, permanent blindness. This study focused on characterizing Moraxella species in a 2022 IBK outbreak in Minas Gerais, Brazil. Ocular swabs from 18 symptomatic Holstein cattle were analyzed through colony isolation, physiological tests, and molecular techniques, including PCR-RFLP and sequencing. Results revealed one isolate of Moraxella bovoculi genotype 1 and five isolates of Moraxella oculi, marking the first report of the latter species in Brazil. This study represents the second report of Moraxella oculi isolation and the first in a country different from the initial report. Notably, Moraxella bovis was not isolated in this outbreak. All isolates exhibited susceptibility to the tested antibiotics. Comparative genomic analysis between the Brazilian Moraxella oculi isolate and the American strain (Tifton 1) revealed 99.5% similarity in the 16–23 S rRNA locus and 99.0% average nucleotide identity. |
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Palavras-Chave: |
Ceratoconjuntivite; IBK; Moraxella oculi. |
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Thesagro: |
Bovino; Doença Animal. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02134naa a2200289 a 4500
001 2174097
005 2025-03-25
008 2025 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11259-025-10713-z$2DOI
100 1 $aCARVALHO, C. V. de
245 $aFirst report of Moraxella oculi in Brazil in an infectious bovine keratoconjunctivitis outbreak.$h[electronic resource]
260 $c2025
520 $aInfectious Bovine Keratoconjunctivitis (IBK) is a widespread ocular disease that affects dairy and beef cattle worldwide, caused by Gram-negative bacteria from the genus Moraxella. It is the most common eye disease in cattle, with symptoms including tearing, ocular pain, corneal opacity, photophobia, ulceration, and, in severe cases, permanent blindness. This study focused on characterizing Moraxella species in a 2022 IBK outbreak in Minas Gerais, Brazil. Ocular swabs from 18 symptomatic Holstein cattle were analyzed through colony isolation, physiological tests, and molecular techniques, including PCR-RFLP and sequencing. Results revealed one isolate of Moraxella bovoculi genotype 1 and five isolates of Moraxella oculi, marking the first report of the latter species in Brazil. This study represents the second report of Moraxella oculi isolation and the first in a country different from the initial report. Notably, Moraxella bovis was not isolated in this outbreak. All isolates exhibited susceptibility to the tested antibiotics. Comparative genomic analysis between the Brazilian Moraxella oculi isolate and the American strain (Tifton 1) revealed 99.5% similarity in the 16–23 S rRNA locus and 99.0% average nucleotide identity.
650 $aBovino
650 $aDoença Animal
653 $aCeratoconjuntivite
653 $aIBK
653 $aMoraxella oculi
700 1 $aDOMINGUES, R.
700 1 $aCOUTINHO, C. de C.
700 1 $aHONÓRIO, N. T. de B. S.
700 1 $aREIS, D. R. de L.
700 1 $aFERREIRA-MACHADO, A. B.
700 1 $aCARVALHO, W. A.
700 1 $aGASPAR, E. B.
700 1 $aMARTINS, M. F.
773 $tVeterinary Research Communications$gv. 49, article 143, 2025.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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