RESUMEN

This study was the first to examine the seroprevalence of Ornithobacterium rhinotracheale (ORT) within a commercial egg layer population. Serum samples collected from egg production companies were examined by serum plate agglutination test (SPAT) and outer membrane protein-based enzyme-linked immunosorbent assay (ELISA). Results show that 90% of layer flocks were positive by SPAT and 100% by ELISA. Of the pullet flocks examined, 43% and 52% were positive by SPAT and ELISA, respectively. Our study indicates that the prevalence of ORT antibody is high in the commercial layer population, suggesting that this respiratory pathogen can easily spread through multiple-age layer farms from older flocks to newly housed pullet flocks.

Asunto(s)

Anticuerpos Antibacterianos/sangre , Pollos , Bacilos y Cocos Aerobios Gramnegativos/inmunología , Infecciones por Bacterias Gramnegativas/veterinaria , Enfermedades de las Aves de Corral/epidemiología , Pruebas de Aglutinación/veterinaria , Animales , Ensayo de Inmunoadsorción Enzimática/veterinaria , Femenino , Infecciones por Bacterias Gramnegativas/sangre , Infecciones por Bacterias Gramnegativas/epidemiología , Medio Oeste de Estados Unidos/epidemiología , Enfermedades de las Aves de Corral/sangre , Enfermedades de las Aves de Corral/microbiología , Estudios Seroepidemiológicos , Pruebas Serológicas/veterinaria