Cardona C J, Bickford A A, Charlton B R, Cooper G L
California Veterinary Diagnostic Laboratory System, Turlock Branch, University of California, Davis 95381.
Avian Dis. 1993 Jan-Mar;37(1):234-9.
Two unrelated flocks of chicks experienced elevated mortality from 4 to 10 days of age. Clinical signs in affected birds included a full range of neurological disorders. Livers and spleens were grossly enlarged at necropsy. Enterococcus durans was isolated from multiple organs, including brains. Histologically, there were multifocal coagulative necrosis in the liver, areas of malacia in brain stem, and cerebellar white matter. Inoculation of 1-day-old chicks with a suspension of E. durans resulted in bacteremia but did not produce the lesions observed in field cases.
两群不相关的雏鸡在4至10日龄时死亡率升高。患病鸡的临床症状包括一系列神经紊乱。尸检时肝脏和脾脏明显肿大。从包括大脑在内的多个器官中分离出耐久肠球菌。组织学检查显示，肝脏有多处凝固性坏死，脑干有软化区，小脑白质也有病变。用耐久肠球菌悬液接种1日龄雏鸡可导致菌血症，但未产生在实际病例中观察到的病变。
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