Results 1 to 10 of about 500 (148)

Extraembryonic membrane morphology in greater rheas (Rhea americana americana Linnaeus, 1758) [PDF]

open access: yesZoomorphology, 2023
The greater rhea, Rhea americana, is a wild ratite of high scientific importance and significant and zootechnical value, especially considering the current development state of Brazilian poultry production, where research aimed at increasing the productivity of these animals has become extremely relevant.
Gadelha, Ana Indira Bezerra Barros   +7 more
openaire   +3 more sources

Infection of ratites with clade 2.3.4.4b HPAIV H5N1: potential implications for zoonotic risk [PDF]

open access: yesEmerging Microbes and Infections
We detected H5N1 high pathogenicity avian influenza in captive Greater Rhea (Rhea americana). Viral genetic analysis revealed the mammalian associated PB2-E627 K mutation, indicating selection of mammalian-relevant mutations in ratites.
Holly A. Coombes   +15 more
doaj   +3 more sources

Serum Biochemistry of Greater Rhea (Rhea americana) in Captivity in the Northeast of Brazil [PDF]

open access: yesAnimals, 2023
We investigated the biochemical profile of greater rheas (Rhea americana) in captivity and correlated these values according to the birds’ sex. A total of 69 serum samples were collected from a breeding site in Mossoró, northeastern Brazil, and analyzed ...
Antonio Humberto Hamad Minervino   +8 more
doaj   +2 more sources

Cholangiocarcinoma in an American Rhea (Rhea Americana araneipes) [PDF]

open access: yesCiência Rural, 2015
Cholangiocarcinomas are neoplasms that originate from the bile duct epithelium. The present case described a cholangiocarcinoma in an adult female American Rhea (Rhea Americana araneipes) by means of gross, histopathology and immunohistochemistry ...
Paulo Ricardo Dell'Armelina Rocha   +5 more
doaj   +4 more sources

Morphology of the cardiovascular system in greater rhea (Rhea americana americana Linnaeus, 1758)

open access: yesMedicina Veterinária, 2021
Greater rheas have been the subject of scientific studies in the various areas of veterinary and biology in order to obtain essential information for their captivity management.
Hélio Noberto Araújo Júnior   +8 more
doaj   +3 more sources

Intussusception Associated with Sand Accumulation in a Greater Rhea (Rhea americana) [PDF]

open access: yesActa Veterinaria, 2021
Pathoanatomical studies of diseases that affect wild animals are extremely important as appropriate measures can then be taken for the prevention and control of such diseases.
Batista Jael Soares   +9 more
doaj   +2 more sources

Morfologia do ovário da ema (Rhea americana) Morphology of the ovary in rhea (Rhea americana)

open access: yesPesquisa Veterinária Brasileira, 2007
A morfologia do ovário de emas adultas (Rhea americana) sexualmente maduras foi descrita neste trabalho. Os ovários de 24 fêmeas em fase reprodutiva foram colhidos em abatedouro, tomados dados métricos do diâmetro dos folículos (n = 18) e colhidos ...
Rogério C. Parizzi   +6 more
doaj   +2 more sources

Broad-scale recombination pattern in the primitive bird Rhea americana (Ratites, Palaeognathae). [PDF]

open access: yesPLoS ONE, 2017
Birds have genomic and chromosomal features that make them an attractive group to analyze the evolution of recombination rate and the distribution of crossing over.
Lucía Del Priore, María Inés Pigozzi
doaj   +2 more sources

A new coccidian, Isospora rheae sp. nov. (Apicomplexa, Eimeriidae), from Rhea americana (Aves, Rheidae) from South America [PDF]

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2014
A new species of coccidian (Protozoa: Apicomplexa: Eimeriidae) obtained from rheas, Rhea americana, is reported in Brazil. Oocysts of Isospora rheae sp. nov. are spherical to subspheroidal, measuring 22.6 × 21.0 µm, and have a double and smooth wall that
Samira S.M. Gallo   +3 more
doaj   +2 more sources

Arterial vascularization of the cloacal bursa of the greater rhea (Rhea americana americana Linnaeus, 1758)

open access: yesBioscience Journal, 2016
The cloacal bursa is an organ in fowls, which triggers lymphocyte maturation and transference to other tissues. Since there is scanty information on its morphology in wild species in spite of its importance in the fowls´ immunological system, current ...
Radan Elvis Matias de Oliveira   +7 more
doaj   +6 more sources

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