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Respiratory Cryptosporidiosis in a Peacock Chick
R. W. Mason and W. J. Hartley
Vol. 24, No. 3 (Jul. - Sep., 1980), pp. 771-776
Published by: American Association of Avian Pathologists
Stable URL: http://www.jstor.org/stable/1589814
Page Count: 6
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Respiratory cryptosporidiosis was diagnosed in a 2-week-old peacock chick, whose symptoms were a gurgling respiration, coughing and sneezing, and a serous oculonasal discharge. Light microscopy detected cryptosporidial-like organisms attached to the surface of conjunctival, nasal-sinus, and tracheal-epithelial cells, and electron microscopy demonstrated stages typical of cryptosporidial trophozoites, schizonts, and oocysts. About 30 other in-contact peacock chicks also developed the same clinical symptoms, and all died despite treatment with oxytetracycline HCl at 200 ppm in the drinking water.
Avian Diseases © 1980 American Association of Avian Pathologists