Risk factors associated with early respiratory disease complex in broiler chickens

被引:8
作者
Tablante, NL [1 ]
Brunet, PY
Odor, EM
Salem, M
Harter-Dennis, JM
Hueston, WD
机构
[1] Univ Maryland, Virginia Maryland Reg Coll Vet Med, College Pk, MD 20742 USA
[2] Maryland Dept Agr, Hlth Anim Lab, Salisbury, MD 21801 USA
[3] Univ Delaware, Lasher Lab, Georgetown, DE 19947 USA
[4] Univ Maryland Eastern Shore, Princess Anne, MD 21853 USA
关键词
respiratory disease; risk factors; broiler chickens;
D O I
10.2307/1592639
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
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.
引用
收藏
页码:424 / 428
页数:5
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