The health status of ring-necked pheasants in view of the prevalence of infectious diseases was estimated in Polish pheasantries in the years 1997-2000. Anatomicopathological, microbiological and serological examinations were carried out on birds derived from 26 pheasantries, including birds randomly selected from 18 flocks and sick or dead birds sent from 8 pheasantries. Antibodies specific to the following viruses were detected in serum blood samples: HE, AE, AP, REO, AI, Adeno group 1, MD, ND, as well as Mycoplasma gallisepticum specific antibodies. However, in none of the examined flocks was the presence of antibodies against reticuloendoteliosis virus found. Marble spleen disease and salmonellosis proved to be the most frequent cause of death during the growing period.
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