Abstract
Early respiratory disease complex (ERDC) is a term coined to describe an acute disease characterized by depression, respiratory distress, and increased mortality in 2-to-3-wk-old broiler chickens. Postmortem lesions include airsacculitis, fibrinous pericarditis, and perihepatitis. Colisepticemia is the primary cause of death. In order to investigate the association between ERDC and farm management factors, a retrospective case-control study was conducted by collecting data covering a 6-mo period (January-June 1997) from four broiler integrators on the Delmarva peninsula. Univariate and multivariate statistical analyses revealed that flock size was positively associated (P = 0.02) and layout time was negatively associated (P = 0.05) with ERDC.
Original language | English (US) |
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Pages (from-to) | 424-428 |
Number of pages | 5 |
Journal | Avian diseases |
Volume | 43 |
Issue number | 3 |
DOIs | |
State | Published - 1999 |
Keywords
- Broiler chickens
- Respiratory disease
- Risk factors