Results 151 to 160 of about 207,488 (190)

Morphometry of the heart of greater rhea (Rhea americana americana, Linnaeus, 1758)

Anatomia, Histologia, Embryologia, 2020
AbstractHeart diseases in birds are frequent and generate significant production disorders. Morphometry is a valuable tool to provide fundamental information about heart conditions. Few studies have addressed morphological aspects of the heart of ratite birds, such as the Greater rhea.
Ryshely Sonaly De Moura Borges, Andre De Macedo Medeiros, Joelma Gomes da Silva, Ruana Rafaela Lira Torquato Paiva, Herson da Silva Costa, Moacir Franco de Oliveira, Carlos Eduardo Bezerra de Moura   +6 more
openaire   +2 more sources

Necrotizing Typhlocolitis Associated with a Spirochete in Rheas (Rhea americana)

Avian Diseases, 1992
Necrotizing typhlocolitis was diagnosed in 13 juvenile common rheas (Rhea americana) from three separate of geographically isolated Ohio flocks, with mortality ranging from 25% to 80%. At postmortem examination, a diphtheritic membrane covered ulcerated cecal mucosa.
J E, Sagartz, D E, Swayne, K A, Eaton, J R, Hayes, K D, Amass, R, Wack, L, Kramer   +6 more
openaire   +2 more sources

Acute aflatoxicosis outbreak in rheas (Rhea americana) in Brazil: Case report

Toxicon, 2022
Aflatoxins are mycotoxins capable of contaminating food, and can cause toxic effects, teratogenicity, mutagenicity, carcinogenicity, and immune system depression. The presence of fungi which produce this metabolite in ingredients that compose the animal feed increased the risk of the emergence of aflatoxicosis. The objective of this study was to report
João Farias de, Sousa Júnior, Márcio Leonardo de Morais, Nobre, Hermínio José da, Rocha Neto, Lilian Silva, Catenacci, Maria José Dos Santos, Soares, Maria Christina Sanches, Muratori, Miguel Ferreira, Cavalcante Filho, Larissa Maria Feitosa, Gonçalves, Raizza Eveline Escórcio, Pinheiro   +8 more
openaire   +2 more sources

Chronic fascioliasis in farmed and wild greater rheas (Rhea americana)

Veterinary Parasitology, 2007
From 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, Sergio Silva, da Silva, Leandro Quintana, Nizoli, Samuel Rodrigues, Felix, Ana Lucia, Schild   +4 more
openaire   +2 more sources

Rhea americana (Rhea) 2n = 82

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, Willy Beçak, Franklin L. Roberts, Robert N. Shoffner, E. Peter Volpe   +4 more
openaire   +1 more source

Multiple Intussusceptions in a Juvenile Rhea (Rhea americana) with Proventricular Impaction

Avian Diseases, 1997
Multiple 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
openaire   +2 more sources

Ontogeny of feeding and drinking in the greater rhea (Rhea americana)

Behavioural Processes, 1978
Feeding 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.
openaire   +2 more sources

Identification of the swine pathogen Serpulina hyodysenteriae in rheas (Rhea americana)

Veterinary Microbiology, 1996
Recently 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
openaire   +2 more sources

Intestinal Smooth Muscle Hyperplasia in a Rhea (Rhea americana)

Avian Diseases, 1995
Smooth 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.
openaire   +2 more sources

Gonadal morphogenesis and sexual differentiation in rhea (Rhea americana)

Reproductive Biology
The rhea (Rhea americana) is a docile and highly adaptable ratite with notable zootechnical potential for the production of meat, eggs, feathers, and leather. Beyond its economic relevance, captive breeding plays an important role in conservation. However, information on its embryonic and gonadal development remains limited-knowledge that is essential ...
Marilú Cristofoli, Flavia Maria Pia Montenegro Donoso, Mayla Magalhães de Oliveira Alcobaça, Fabiana Morse Gosson Jorge, Danielle Cristina Calado de Brito, Moacir Franco de Oliveira, Antônio Chaves de Assis Neto   +6 more
openaire   +2 more sources