Proventricular Dilatation Disease but Negative for Avian Bornavirus in Raptors: A Toucan and a Mousebird

摘要

Proventricular dilatation disease (PDD) is a disease common in psittacine birds, but also of various other species of birds including passerine birds (canaries, finches), geese, swans, and others.1"7 The disease is characterized by regurgitation of food, passing of undigested seeds in the feces, neurologic signs, anorexia, weakness, loss of weight and sometimes sudden death. The pathology of PDD includes dilation of the proventriculus (70 % of the time in psittacine birds) and distention of the duodenum with lymphoplasmacytic inflammation in the central, peripheral and autonomic nervous systems, as well as, adrenalitis and myocarditis.2 The etiology of PDD is avian Bornavirus.