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Arq. bras. med. vet. zootec ; 62(3): 752-756, June 2010. graf, tab
Artículo en Portugués | LILACS | ID: lil-554949

RESUMEN

The efficiency of the Polymerase Chain Reaction (PCR) combined with selective enrichment broth was compared with the standard microbiological techniques for detection of Salmonella Dublin in fecal samples of 10 to 15-days-old Holstein calves, experimentally infected with 10(8) CFU of Salmonella Dublin. Seventy-six fecal samples were analyzed using PCR associated with selenite cystine (SC) and Muller-Kauffmann tetrathionate (TMK) broths and standard microbiological techniques. Regardless of the selective enrichment broth used, the standard microbiological techniques were significantly better than PCR in detection of positive samples of Salmonella Dublin. However, the simultaneous use of both techniques provided detection of a larger number of positive samples. The SC broth was the best option as selective enrichment in both techniques.


Asunto(s)
Animales , Bovinos , Salmonella/aislamiento & purificación , Salmonelosis Animal/diagnóstico , Salmonelosis Animal/microbiología , Técnicas Bacteriológicas , Heces , Reacción en Cadena de la Polimerasa
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