Results 181 to 190 of about 21,215 (229)
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1973
The karyotypes were prepared from feather pulp of specimens obtained from the Como Zoo, St. Paul, Minnesota. Takagi et al. describe a slightly hetromorphic acrocentric pair (Z and W) which they assign to size six position.
Maria Luiza Beçak +4 more
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The karyotypes were prepared from feather pulp of specimens obtained from the Como Zoo, St. Paul, Minnesota. Takagi et al. describe a slightly hetromorphic acrocentric pair (Z and W) which they assign to size six position.
Maria Luiza Beçak +4 more
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Multiple Intussusceptions in a Juvenile Rhea (Rhea americana) with Proventricular Impaction
Avian Diseases, 1997Multiple intussusceptions of the small intestine were identified in a 4-mo-old rhea (Rhea americana) that died acutely after chronically poor growth. The chick was one of a group of 12 chicks that exhibited musculoskeletal deformities, poor growth, and subsequent death.
S, Frasca, M I, Khan
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Development of spermatozoa in the rhea
The Anatomical Record, 1989AbstractWe have examined the ultrastructural changes that take place during spermiogenesis in the rhea. Spermatozoa are characterized by a curved head a midpiece. A thin rod extends from the anterior tip of the spermatozoon through the center of the nucleus. A 3‐μ‐long distal centriole occupies the entire midpiece.
D M, Phillips, C S, Asa
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Chronic fascioliasis in farmed and wild greater rheas (Rhea americana)
Veterinary Parasitology, 2007From 50 farmed Rhea americana slaughtered for human consumption, adult forms and eggs of Fasciola hepatica were found in 4. The other three livers were free of flukes but did show lesions caused by larval fluke migration. Histological lesions were similar to those caused by flukes in cattle and sheep.
Mauro Pereira, Soares +4 more
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Identification of the swine pathogen Serpulina hyodysenteriae in rheas (Rhea americana)
Veterinary Microbiology, 1996Recently intestinal spirochetes were isolated from rheas in Ohio and Iowa with a necrotizing typhlocolitis. These intestinal spirochetes, strains R1 and NIV-1, were characterized and compared with other intestinal spirochetes, including strains of S. hyodysenteriae. Both rhea spirochetes were indole positive, strongly beta-hemolytic, grew under a 1% O2:
N S, Jensen, T B, Stanton, D E, Swayne
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SUCCESSFUL TREATMENT OF SUSPECTED EXERTIONAL MYOPATHY IN A RHEA (RHEA AMERICANA)
Journal of Zoo and Wildlife Medicine, 2005A 7-yr-old, adult, female greater rhea (Rhea americana) from the National Zoological Park presented with a 24-hr history of severe left leg lameness that progressed to an inability to stand. Blood work revealed creatine phosphokinase (CPK) above 50,000 U/L and elevated lactate dehydrogenase. The bird's condition deteriorated over the next week.
Kristine M, Smith +2 more
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2002
Abstract Large flightless birds with long legs and three toes, the hallux being absent. They have no clavicle and the tibia is ,without a bony bridge. There are no tail feathers. The caecae of the alimentary canal are large and the syrinx has only one pair of syringeal muscles.
S J J F Davies +2 more
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Abstract Large flightless birds with long legs and three toes, the hallux being absent. They have no clavicle and the tibia is ,without a bony bridge. There are no tail feathers. The caecae of the alimentary canal are large and the syrinx has only one pair of syringeal muscles.
S J J F Davies +2 more
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Pulmonary aspergillosis in the threatened lesser rhea (Rhea pennata)
Comparative Clinical Pathology, 2013Two captive lesser rheas (Rhea pennata), a 4-year old and an 11-month old, died in captivity at the Vesty Pakos Zoo in La Paz, Bolivia. Clinical signs were similar in both of the individuals and included lethargy, incoordination, progressive weakness, and loss of appetite.
Fidel Fernández Anagua +1 more
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Ontogeny of feeding and drinking in the greater rhea (Rhea americana)
Behavioural Processes, 1978Feeding and drinking movements of the greater rhea chick are analyzed. Feeding consists of five movements in the following sequence: orientation, pecking thrust, head lift, forward head jerk and swallow. Drinking is less complex, consisting of a downward movement followed by an upward movement.
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Intestinal Smooth Muscle Hyperplasia in a Rhea (Rhea americana)
Avian Diseases, 1995Smooth muscle hyperplasia of the small intestine occurred in an 18-month-old rhea (Rhea americana). The mucosal thickening was 2-3 mm, and the enlarged muscle layers averaged 5 mm thick. The intestinal villi were lengthened, pleated, and expanded by smooth muscle hyperplasia within the lamina propria.
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