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Assessment of a segregated medicated early weaning protocol for elimination of Actinobacillus pleuropneumoniae

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EnglishTo assess the success of a segregated medicated early weaning protocol for elimination of Actinobacillus pleuropneumoniae, ten consecutive batches of 100 pigs per batch weaned at 7-9 days of age… Click to show full abstract

EnglishTo assess the success of a segregated medicated early weaning protocol for elimination of Actinobacillus pleuropneumoniae, ten consecutive batches of 100 pigs per batch weaned at 7-9 days of age were monitored at 21-22 weeks of age looking for presence of productive cough, presence of antibodies against the agent and pleuropneumonia-compatible lung lesions at slaughter. Also, whole tonsils were processed for A. pleuropneumoniae identification by both bacteriological isolation and nested-PCR using a direct method. Positive serological test (1.4%) and PCR (3.5%) results, suggested that A. pleuropneumoniae could not be eradicated in all batches, even using segregated medicated early weaning protocol. Key words: swine; pleuropneumonia; Actinobacillus pleuropneumoniae; elimination; segregated medicated early weaning. portuguesPara avaliar o sucesso de um protocolo de desmame precoce segregado medicado para a eliminacao de Actinobacillus pleuropneumoniae, dez lotes consecutivos de 100 suinos por lote desmamados aos 7-9 dias de idade foram monitorados as 21-22 semanas de idade procurando a presenca de tosse produtiva, presenca de anticorpos contra o agente e lesoes pulmonares compativeis com pleuropneumonia no abate. Alem disso, as tonsilas inteiras foram processadas para a identificacao de A. pleuropneumoniae por isolamento bacteriologico e nested PCR usando um metodo direto. Os resultados serologicos (1,4%) e PCR (3,5%) positivos sugerem que nao foi possivel erradicar em todos os lotes, mesmo usando um protocolo de desmame precoce segregado medicado. Palavras-chave: suino; pleuropneumonia; Actinobacillus pleuropneumoniae; eliminacao; desmame precoce segregado medicado

Keywords: segregated medicated; medicated early; early weaning; weaning protocol; actinobacillus pleuropneumoniae

Journal Title: Ciencia Rural
Year Published: 2018

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