Seroprevalence of Ornithobacterium rhinotracheale infection in commercial laying hens in the north central region of the United States

C. J. Heeder, V. C. Lopes, K. V. Nagaraja, D. P. Shaw, D. A. Halvorson

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1064-1067
Number of pages4
JournalAvian diseases
Volume45
Issue number4
DOIs
StatePublished - Jan 1 2001

Keywords

  • ELISA
  • Laying hens
  • Ornithobacterium rhinotracheale
  • Seroprevalence

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