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Ciência Animal Brasileira
Article . 2012 . Peer-reviewed
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Ciência Animal Brasileira
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Ciência Animal Brasileira
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Ciência Animal Brasileira
Article . 2012
Data sources: DOAJ
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ATIVIDADE VIRAL DO VÍRUS RESPIRATÓRIO SINCICIAL BOVINO (BRSV) EM BEZERROS LEITEIROS

Authors: Affonso, Ingrid Bortolin; Gatti, Sandra Possebon; de Medeiros, Andréa Souza Ramos; Buzinaro, Maria da Glória; Samara, Samir Issa;

ATIVIDADE VIRAL DO VÍRUS RESPIRATÓRIO SINCICIAL BOVINO (BRSV) EM BEZERROS LEITEIROS

Abstract

O vírus respiratório sincicial bovino (BRSV) é um dos principais patógenos que acometem o sistema respiratório de bovinos jovens, causando sérios prejuízos econômicos. Dados sobre sua epidemiologia e ocorrência em animais até um ano de idade são escassos na literatura brasileira. Assim, este estudo teve como objetivo determinar a ocorrência da atividade viral do BRSV em três rebanhos leiteiros soropositivos, por meio do monitoramento sorológico de bezerros, desde o primeiro dia de vida até os animais completarem um ano, utilizando a técnica de vírus-neutralização. Os resultados mostraram que, nos animais das propriedades A e B, os títulos de anticorpos aumentaram nos primeiros meses, caracterizando uma resposta à ingestão do colostro e que, com o passar do tempo, foram decrescendo e apresentando total ausência no sexto e oitavo mês, respectivamente, com aumento de títulos nos meses finais do período de colheita, devido provavelmente a uma infecção natural a campo. Na propriedade C, apesar de ocorrer dinâmica semelhante às demais, não houve período de total ausência de anticorpos, sugerindo que os animais podem ter sido infectados nos primeiros meses de vida, mesmo na presença de anticorpos colostrais. Por meio do monitoramento sorológico de bezerros foi demonstrada a atividade fluente da infecção pelo BRSV entre os animais, em todas as propriedades analisadas. PALAVRAS-CHAVE: atividade viral; monitoramento; título de anticorpos; vírus-neutralização; vírus respiratório sincicial bovino.

Country
Brazil
Keywords

Staphylococcus, Respiratory syncytial virus, antibody titer, viral activity, SF1-1100, Antimicrobial therapy, Dairy goats, Bovine respiratory syncytial virus, Capra hircus, Bacteria (microorganisms), Natural products, S, screening, Agriculture, Epidemiologia Animal, Animal culture, Capra, bovine respiratory syncytial virus, virus neutralization, Sanidade Animal, Minimal bactericidal concentration

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    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
Green
gold