Abstract: Macrorhabdus ornithogaster, avian gastric yeast, is a common cause of gastrointestinal disease in budgerigars (Melopsittacus undulatus).
Key words: Macrorhabdus ornithogaster, yeast, undigested seeds, melena, avian, budgerigars, Melopsittacus undulatus
One of the most common causes of gastrointestinal disease in budgerigars (Melopsittacus undulatus) is Macrorhabdus ornithogaster, also called avian gastric yeast.
Macrorhabdus ornithogaster has been detected in many bird species.
Macrorhabdus ornithogaster can be found microscopically on the surface of the isthmus glands.
Phylogenetic analysis identifies the 'megabacterium' of birds as a novel anamorphic ascomycetous yeast, Macrorhabdus ornithogaster gen.
Abstract: Macrorhabdus ornithogaster is a yeast organism that infects multiple species of captive and wild birds.
Key words: Macrorhabdus ornithogaster, avian gastric yeast, fecal Gram's stain, polymerase chain reaction, PCR, psittacine bird, budgerigars, Melopsitiacus undulatus
Macrorhabdus ornithogaster is a long, slender, straight, rod-shaped organism with rounded ends.
In another bird, a mild lymphoplasmacytic infiltration of the proventriculus and ventriculus was observed along with the presence of a small number of Macrorhabdus ornithogaster
on the mucosal surface.
Except for the isolation of moderate numbers of Macrorhabdus ornithogaster
from the proventriculus of the red-crowned parakeet, routine diagnostic procedures failed to demonstrate any parasitic, bacterial, or fungal pathogens in the 3 birds.
Results of a parasitologic examination of the intestines and direct microscopic examination by wet mount of the mucosa of the proventriculus for Macrorhabdus ornithogaster