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Evaluation of Persistence and Distribution of Salmonella Serotype Isolation from Poultry Farms Using Drag-Swab Sampling

D. J. Caldwell, B. M. Hargis, D. E. Corrier, L. Vidal and J. R. DeLoach
Avian Diseases
Vol. 39, No. 3 (Jul. - Sep., 1995), pp. 617-621
DOI: 10.2307/1591816
Stable URL: http://www.jstor.org/stable/1591816
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Evaluation of Persistence and Distribution of Salmonella Serotype Isolation from Poultry Farms Using Drag-Swab Sampling
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Abstract

The consistency and persistence of isolation of specific serotypes of Salmonella were evaluated on a 31-farm broiler complex following four complete sampling periods. A total of 25 different serotypes were isolated, with multiple serotypes and were frequently isolated simultaneously from individual farms. When the serotypes recovered from individual farms were further examined, common serotypes were isolated from individual farms on only seven occasions. Furthermore, on only five occasions were multiple serotypes recovered from individual farms on consecutive samplings. A casual association of common serotype isolations among farms with similar flock placement dates was observed in one sampling period. These results indicate little predictability or consistency of Salmonella serotype isolation on individual farms over time. /// En 31 granjas de pollos de engorde, se evaluó la consistencia y persistencia del aislamiento de serotipos específicos de Salmonella después de cuatro períodos completos de muestreo. Se aisló un total de 25 serotipos diferentes, con un frecuente aislamiento simultáneo de serotipos múltiples a partir de algunas granjas. Cuando se practicaron exámenes adicionales a los serotipos aislados, se encontró que únicamente en siete ocasiones se aislaron serotipos comunes en estas granjas. Además, sólo en cinco ocasiones se aislaron serotipos múltiples a partir de granjas en muestreos consecutivos. Durante uno de los períodos de muestreo, se observó una asociación casual de aislamiento de serotipos comunes con fecha similar de entrada de los pollos. Estos resultados indican que hay poca posibilidad de predicción o consistencia en el aislamiento de serotipos de Salmonella en las granjas.

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