Myopathy of the pipping muscles, hepatosis dietetica, and cataracts in emu chicks (Dromaius novaehollandiae)

Crispo, M., Palmieri, C. and Shivaprasad, H. L. (2016) Myopathy of the pipping muscles, hepatosis dietetica, and cataracts in emu chicks (Dromaius novaehollandiae). Veterinary Pathology, 53 6: 1248-1251. doi:10.1177/0300985816638720


Author Crispo, M.
Palmieri, C.
Shivaprasad, H. L.
Title Myopathy of the pipping muscles, hepatosis dietetica, and cataracts in emu chicks (Dromaius novaehollandiae)
Formatted title
Myopathy of the pipping muscles, hepatosis dietetica, and cataracts in emu chicks (Dromaius novaehollandiae)
Journal name Veterinary Pathology   Check publisher's open access policy
ISSN 0300-9858
1544-2217
Publication date 2016-03-28
Sub-type Article (original research)
DOI 10.1177/0300985816638720
Open Access Status Not yet assessed
Volume 53
Issue 6
Start page 1248
End page 1251
Total pages 4
Place of publication Thousand Oaks, CA, United States
Publisher Sage Publications
Language eng
Abstract Seven emu chicks (Dromaius novaehollandiae) from a farm with poor hatchability (16-18%) and increased neonatal mortality were presented for necropsy with a history of death at or within a few days after hatching. Macroscopic examination revealed subcutaneous edema and hemorrhages and swelling of the pipping muscles in the proximal neck (71%), pale liver with hemorrhages (71%), noninternalized residual yolk sac (86%) and anasarca (14%). Histologically, the most remarkable findings were necrosis of the musculus complexus (100%) of the pipping muscles, as well as myocardial necrosis and mineralization (29%). Liver contained severe multifocal hepatocellular necrosis and hemorrhages (57%), and both eyes exhibited swollen and vacuolated lenticular fibers in 5 chicks (100%) in which the eyes were examined. The lesions observed here are suggestive of a nutritional deficiency. The deficiency was confirmed by finding low levels of vitamin E in the liver, and vitamin E and vitamin A levels in the feed.
Formatted abstract
Seven emu chicks (Dromaius novaehollandiae) from a farm with poor hatchability (16–18%) and increased neonatal mortality were presented for necropsy with a history of death at or within a few days after hatching. Macroscopic examination revealed subcutaneous edema and hemorrhages and swelling of the pipping muscles in the proximal neck (71%), pale liver with hemorrhages (71%), noninternalized residual yolk sac (86%) and anasarca (14%). Histologically, the most remarkable findings were necrosis of the musculus complexus (100%) of the pipping muscles, as well as myocardial necrosis and mineralization (29%). Liver contained severe multifocal hepatocellular necrosis and hemorrhages (57%), and both eyes exhibited swollen and vacuolated lenticular fibers in 5 chicks (100%) in which the eyes were examined. The lesions observed here are suggestive of a nutritional deficiency. The deficiency was confirmed by finding low levels of vitamin E in the liver, and vitamin E and vitamin A levels in the feed.
Keyword Cataract
Tocoferol
Emu
Eye
Hepatosis dietetica
Liver
Myopathy
Pipping muscle
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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Created: Tue, 29 Mar 2016, 19:54:54 EST by Chiara Palmieri on behalf of School of Veterinary Science