Publications

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catarrhal proventriculitis associated with a filamentous organism in pet birds.catarrhal proventriculitis due to infection by an unidentified organism was diagnosed in 79 of 534 pet birds examined histologically. it was more prevalent in domestic birds (70 cases) than in imported ones (9 cases). a high incidence of the disease was encountered in budgerigars (melopsittacus undulatus) and it was occasionally found in finches (poephila gouldiae gouldiae), parakeets (psittacula krameri manillensis), amazona parrots (amazona aestiva aestiva) and cockatiels (nymphicus hollandicu ...19921297007
histopathological survey of protozoa, helminths and acarids of imported and local psittacine and passerine birds in japan.a total of 534 psittacine and passerine birds consisting of 241 imported and 293 local birds were examined histologically. as a result, the following parasites were found: giardia (86 cases), knemido-coptes (26 cases), coccidia (10 cases), ascaridia (6 cases), cryptosporidium (5 cases), sarcocystis (5 cases), tapeworm (4 cases), microfilaria (2 cases), hexamita (1 case), and spiroptera (1 case). high incidences of giardiasis and knemido-coptic infestation were detected in the local birds, but ra ...19921297009
imported parakeets harbor h9n2 influenza a viruses that are genetically closely related to those transmitted to humans in hong kong.in 1997 and 1998, h9n2 influenza a viruses were isolated from the respiratory organs of indian ring-necked parakeets (psittacula krameri manillensis) that had been imported from pakistan to japan. the two isolates were closely related to each other (>99% as determined by nucleotide analysis of eight rna segments), indicating that h9n2 viruses of the same lineage were maintained in these birds for at least 1 year. the hemagglutinins and neuraminidases of both isolates showed >97% nucleotide ident ...200111238878
respiratory herpesvirus infection in two indian ringneck parakeets.a flock of indian ringneck parakeets (psittacula krameri manillensis) was imported to the united states from australia. soon after, 1 parakeet suddenly died, and a second parakeet died after a 2-day course of illness, which consisted of anorexia, lethargy, emaciation, and dyspnea. at necropsy, the affected birds had diffuse consolidation and red discoloration of the lungs, as well as thickened, congested air sacs. the microscopic examination revealed multifocal, necrotizing bronchitis, parabronc ...200818319441
eye lesions in pet birds.amongst eye lesions in birds that died in quarantine, cataracts were the most common disorders (37/241, 15.4%), being prevalent in the annular pads of cockatiels (nymphicus hollandicus), amazon parrots (amazona aestiva aestiva) and budgerigars (melopsittacus undulatus). the incidence in male birds was more than twice that in females. deposition of crystals, mostly in the cornea, was the second most frequent lesion (21/293, 8.7%), mainly found in cockatiels, parakeets (psittacula krameri manillen ...199318671000
herpesvirus infections in psittacine birds in japan.herpesvirus infection was diagnosed histologically and electron microscopically in 21 out of 241 pet birds examined. the infected birds included 14 parakeets (psittacula krameri manillensis) with respiratory infection and three parrots (ama-zona aestiva aestiva), two cockatiels (nymphicus hollandicus) and two rosellas (platycercus emimius) with pacheco's disease. the consistent lesions of respiratory herpesvirus infection were the formation of syncytial cells associated with the presence of intr ...199318671003
pathological studies on chlamydiosis in parakeets (psittacula krameri manillensis).histological, immunohistochemical and ultrastructural findings are described in 20 parakeets (psittacula krameri ntanillensis) affected with chlamydiosis. the main histological lesions consisted of focal necrosis in the liver and adrenal gland, lymphocytic depletion with fibrin exudation in the splenic sinuses and follicles and fibrinopurulent airsacculitis. in these lesions basophilic chlamydial inclusion bodies were found. macrophages and plasma cells increased mainly in the liver and spleen. ...199018679944
improved clinicopathologic assessments of acute liver damage due to trauma in indian ring-necked parakeets (psittacula krameri manillensis).increased activities of certain biochemical enzymes (alanine aminotransferase [alt], aspartate aminotransferase [ast], lactate dehydrogenase [ldh], alkaline phosphatase [alp]) have been associated with blunt liver injury in many species. to evaluate changes in plasma hepatic biochemical parameters in acute avian liver disease caused by trauma and to compare biochemical changes with histologic lesions in hepatic parenchyma, 30 healthy fasted indian ring-necked parakeets (psittacula krameri manill ...201222872978
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