Abstract
This study investigated the presence of genome sequences of the porcine circovirus type 2 (PCV2) and porcine parvovirus (PPV) in 147 porcine stillbirths and mummified fetuses. These samples, originated from 39 farms located in eight Brazilian states, were collected between 2006 and 2008. Heart and lung fragments were used for extraction of total DNA and later amplification of correspondent fragments of the virus pathogens through polymerase chain reaction (PCR) technique. Out of 147 samples, 74 (50.3%) were positive for PCV2 while nine samples (6.2%) were positive for PCV2 and PPV. None of the samples were positive just for PPV. Out of 39 investigated farms, 21 (53.8%) had fetuses positive for PCV2 while co-infection with PCV2 and PPV was detected in 3 farms (7.7%). These results indicate that PCV2 could be an important infection agent in cases of porcine stillbirths and mummified fetuses in Brazil and must be included at differential diagnostic list. KEY WORDS: Polymerase chain reaction (PCR), porcine circovirus type 2 (PCV2), porcine parvovirus (PPV), reproductive failure, swine.
Highlights
This study investigated the presence of genome sequences of the porcine circovirus type 2 (PCV2) and porcine parvovirus (PPV) in 147 porcine stillbirths and mummified fetuses
Para o diagnóstico de falhas reprodutivas associadas ao porcine circovirus type 2 (PCV2) e ao porcine parvovirus (PPV), autores sugerem correlacionar o quadro clínico, como o aumento nas taxas de fetos natimortos, mumificados e provenientes de aborto associados às lesões histopatológicas compatíveis e detecção in situ do PCV2 ou PPV (PARK et al, 2005; MENGELING, 2006; SEGALÉS et al, 2006; HANSEN et al, 2010)
Summary
2. Doutor em Ciências Veterinárias, com ênfase em sanidade suína, professor adjunto da Universidade Federal do Paraná 3. Professor adjunto aposentado da Universidade Federal de Viçosa, reponsável técnico do laboratório Microvet. Investigou-se a presença de sequências genômicas do circovírus suíno tipo 2 (PCV2) e do parvovírus suíno (PPV) em 147 fetos suínos natimortos e mumificados. Provenientes de 39 granjas localizadas em oito estados brasileiros, foram coletadas entre os anos de 2006 e 2008. (50,3%) foram positivas ao PCV2 enquanto nove amostras (6,2%) apresentaram coinfecção com o PCV2 e o PPV. Entre as 39 granjas estudadas, 21 (53,8%) apresentaram fetos positivos ao PCV2, sendo detectada coinfecção com o PCV2 e o PPV em três (7,7%). PALAVRAS-CHAVES: Circovírus suíno tipo 2 (PCV2), falhas reprodutivas, parvovírus suíno (PPV), reação em cadeia da polimerase (PCR), suíno
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