||Cockatoo entero-like virus (Wylie and Pass, 1990;
McOrist et al., 1991);
picornavirus or astrovirus?
Abstract from Wylie and Pass (1989)...
An enteric infection in cockatoos associated with a 30 nm diameter
enterovirus-like agent seen in faeces and intestinal epithelial
cells is described. The disease is characterised by intractable,
profuse, mucoid diarrhoea, weight loss, dehydration and death.
Lesions in the intestine consist of villous atrophy, villous fusion,
enterocyte hyperplasia and, in some cases, chronic inflammation.
Affected birds so far examined have concurrent psittacine beak and
Abstract from McOrist et al.
Sulphur-crested cockatoos (Cacatua galerita) and galahs (C.
roseicapilla) captured in Victoria, Australia at 7 to 9 weeks
of age were found to suffer a profuse diarrhoea and wasting syndrome
ending in death. Necropsy revealed dilatation of the duodenum with
Histologically, the duodenal mucosa had short, fused villi, with
marked proliferation of crypt enterocytes compared with normal
birds. Electron microscopic examination of faeces and intestinal
sections revealed the presence of round, unenveloped viral particles
approximately 30 nm diameter, with no surface structures and a
smooth, entire edge. Although no virus was cultured, it is likely
that an enterovirus infection was associated with a significant
enteritis in the cockatoos.
S., Madill, D., Adamson, M. and Philip, C. (1991). Viral enteritis
in cockatoos (Cacatua spp.). Avian Pathology 20: 531-539.
Wylie, S.L. and Pass, D.A. (1989).
Investigations of an enteric infection of cockatoos caused by an
enterovirus-like agent. Australian Veterinary Journal 66: 321-324.