Abstract Diagnostic investigations in a large commercial flock of geese with a history of increased losses and runting, lead to the negative contrast electron microscopic detection of circovirus-like viruses in the lymphoreticular tissue in eight of nine selected geese with growth retardation. With the exception of a mild cloudiness of some air sacs, macroscopic changes pointing to an infection were missed. Histopathological changes concentrated on the lymphoreticular tissue. Lymphocytic depletion and histiocytosis were most evident in the bursa of Fabricius. Basophilic globular inclusions were found in the cytoplasm of medullar and cortical bursal follicular cells, and bursal epithelial cells. Ultrastructural examination of these inclusions revealed paracrystalline or multilayered arrays, or randomly arranged complexes of isometric viral particles, about 14 nm in diameter. The pathological appearence of this, so far unknown, infection in geese shows numerous similarities to circovirus infection in pigeons. In the described flock of geese, a virus-induced immunosuppression could have been a predisposing factor for other infectious agents such as Riemerella anatipestifer or Aspergillus fumigatus, thus contributing to the increased losses and developmental disorders.

D. Soike

B. Kohler

Kerstin Albrecht

Avian Pathology

AVIAN PATHOLOGY 是世界兽医家禽协会的官方期刊，自 1972 年首次出版以来，一直是家禽疾病科学家的领先国际期刊。它出版与家禽和其他鸟类的传染性和非传染性疾病的整个领域相关的材料。被接受的手稿将为国际读者提供感兴趣的新数据，并将显着增加对新旧疾病的知识和理解。学科领域包括病理学、诊断、病原体的检测和表征、可能对人畜共患病重要的感染、流行病学、先天和免疫反应、疫苗、基因序列、与疾病相关的遗传学以及对疾病的生理和生化变化。一个国家内公认的疾病的首次和后续报告是不可接受的，除非它们还包含有关疾病或病原体的大量新信息。野生鸟类或宠物鸟类的手稿应描述大量鸟类的疾病或病原体，识别/暗示对该物种的严重潜在影响，或者该疾病或病原体与家禽具有明显相关性。在加工过程中或加工后获得的关于食源性微生物的手稿，以及那些对微生物的发生或特性进行分类的手稿，在没有将它们与禽类疾病联系起来的数据的情况下，不太可能考虑出版。

Avian Pathology is the official journal of the World Veterinary Poultry Association and has been a leading international journal in the field of poultry disease science since its first publication in 1972. It publishes research related to infectious and non-infectious diseases of poultry and other birds. Accepted manuscripts will provide new data of interest to an international readership and significantly enhance the knowledge and understanding of both new and existing diseases. The subject areas include pathology, diagnostics, detection and characterization of pathogens, infections relevant to zoonoses, epidemiology, innate and immune responses, vaccines, gene sequences, genetics related to diseases, and physiological and biochemical changes associated with diseases. Manuscripts reporting on recognized diseases within a country will not be accepted unless they contain substantial new information. Manuscripts concerning diseases or pathogens of wild or pet birds should describe diseases or pathogens affecting large populations of birds, indicate or imply serious potential impacts on the species, or have clear relevance to poultry. Manuscripts regarding foodborne microorganisms, obtained during or after processing, are unlikely to be considered for publication unless they are linked to poultry diseases.

《Avian Pathology》是世界兽医家禽协会的官方期刊，自1972年首次出版以来，一直是家禽疾病科学领域的领先国际期刊。该期刊发表与家禽及其他鸟类的传染性和非传染性疾病相关的研究成果。被接受的手稿将为国际读者提供新的数据，显著提升对新旧疾病的知识和理解。涉及的学科领域包括病理学、诊断、病原体检测与表征、与人畜共患病相关的感染、流行病学、先天和免疫反应、疫苗、基因序列、与疾病相关的遗传学，以及疾病的生理和生化变化。首次和后续报告的国家内公认疾病的手稿，除非包含大量新信息，否则将不被接受。关于野生鸟类或宠物鸟类的手稿应描述大量鸟类的疾病或病原体，识别或暗示对该物种的严重潜在影响，或与家禽有明显相关性的疾病或病原体。关于食源性微生物的手稿，若未将其与禽类疾病关联，亦不太可能被考虑出版。

A circovirus-like infection in geese related to a runting syndrome

In the described flock of geese, a virus-induced immunosuppression could have been a predisposing factor for other infectious agents such as Riemerella anatipestifer or Aspergillus fumigatus, thus contributing to the increased losses and developmental disorders.

Category	Quartile
农林科学	2
农林科学, 兽医学	2

A circovirus-like infection in geese related to a runting syndrome

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Category	Quartile
VETERINARY SCIENCES	1