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| Fiorentin,L; Mores,MAZ; Trevisol,IM; Antunes,SC; Costa,JLA; Soncini,RA; Vieira,ND. |
| There is a need for a better understanding of the epidemiology of Mycoplasma synoviae (MS) infection in broiler breeders in Brazil. Many features of the infection remain unrecognizable, because there are no clinical signs of the disease. A detailed testing was performed at each 6 to 8 weeks in three MS-free flocks introduced in farms with endemic MS infection for a follow-up epidemiological study. Every flock was monitored by polymerase chain reaction (PCR), by serum plate agglutination (SPA) and hemagglutination inhibition (HI) for serology studies, and isolation of mycoplasmas from tracheal swabs. PCR was found to be the most sensitive test, detecting early MS infection. Serology was positive in less than 50% of the sera and MS was isolated only between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler breeders; Mycoplasma synoviae; PCR; Serology; Survey; Transmission. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100005 |
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| Fonseca,BB; Soncini,RA; Vieira,FL; Siqueira,MS; Guimarães,AR; Beletti,ME; Rossi,DA. |
| Campylobacter sp is an important agent that causes foodborne infection, particularly in food of poultry origin. Therefore, the efficient control of the transmission routes in chicken farms is of outmost importance to prevent it from spreading. In chicken farms, the main transmission route of this microorganism is horizontal, as the vertical route continues to be the object of inconclusive researches. The objective of this study was to verify the presence of Campylobacter sp in breeder hens, meconium, and other organs of day-old chicks derived from these breeders in order to obtain information on vertical transmission. Microbiological analyses were performed, using cloacal swabs from 279 breeder hens. Positive breeders were segregated, and the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter sp; Chickens; Vertical transmission; Epidemiology. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400010 |
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