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National Surveillance of Campylobacter in Broilers at Slaughter in Denmark in 1998

A. Wedderkopp, E. Rattenborg and M. Madsen
Avian Diseases
Vol. 44, No. 4 (Oct. - Dec., 2000), pp. 993-999
DOI: 10.2307/1593078
Stable URL: http://www.jstor.org/stable/1593078
Page Count: 7
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National Surveillance of Campylobacter in Broilers at Slaughter in Denmark in 1998
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Abstract

A surveillance study for thermophilic Campylobacter spp. in broiler flocks was carried out for the year 1998 in Denmark. The study included examinations of 4286 broiler flocks comprising samples from 57,000 birds. Overall, a flock prevalence of 46.0% was recorded. The species distribution was Campylobacter jejuni 86%, Campylobacter coli 11%, Campylobacter lari 1%, other not further diagnosed species 2%. The prevalence was significantly higher in the period from June to October (3.2 < odds ratio [OR] <1.8, P < 0.0002) and was significantly associated with abattoir (OR < 2.8, P < 0.0001) and the length of the period the broiler houses were left empty between flocks (download period; 6 days or more) (OR = 1.6, P < 0.0198). No association between Campylobacter colonization and the age at slaughter was found. Separating the flocks into batches for slaughter elevated the flock prevalence from 0.41 after the first batch had been slaughtered to 0.46 after all batches had been slaughtered. /// Se realizó una encuesta para Campylobacter spp. termofílico en parvadas de pollos de engorde en Dinamarca en 1998. El estudio incluyó el examen de 4286 parvadas de pollos de engorde con muestras de 57000 aves. En general, se observó una prevalencia de 46.0% por parvada. La distribución por especie fue de 86% para Campylobacter jejuni, 11% para Campylobacter coli, 1% para Campylobacter lari y 2% para otras especies no identificadas. Se observó una prevalencia significantemente más alta en el período de Junio a Octubre (3.2< OR < 1.8 P < 0.0002) que estuvo significantemente asociada con el matadero (OR <2.8, P <0.0001) y con el período de descanso de los galpones entre las parvadas (6 dias o más) (OR = 1.6, P < 0.0198). No se observó ninguna asociación entre la colonización por Campylobacter y la edad al sacrificio. La separación de las parvadas en grupos para el sacrificio elevó la prevalencia por parvada de 0.41 después del sacrificio del primer grupo a 0.46 después del sacrificio de los grupos restantes.

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