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Gadelha AIBB, de Oliveira MF, de Sousa ACFC, Diniz JARA, Lopes IRG, Fernandes BCC, Pereira AF, de Moura CEB. Extraembryonic membrane morphology in greater rheas ( Rhea americana americana Linnaeus, 1758). ZOOMORPHOLOGY 2023; 142:1-16. [PMID: 37360222 PMCID: PMC10027282 DOI: 10.1007/s00435-023-00602-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/16/2023] [Accepted: 02/27/2023] [Indexed: 03/29/2023]
Abstract
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. Studies concerning fetal attachments and embryonic development are paramount, as they can provide essential information concerning reproductive and nutritional animal management. However, a lack of information on greater rhea fetal morphology is noted. Therefore, the aim of the present study was to establish a standard model for fetal attachments in this species. Greater rhea eggs were incubated from 0 to 36 days, and macroscopic and microscopic embryonic attachment characterizations were performed. Histologically, all embryonic annexes exhibit germ layers, namely the ectoderm (outer layer), mesoderm (middle layer) and endoderm (inner layer). The findings indicate that greater rhea development patterns are similar to other birds.
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Affiliation(s)
- Ana Indira Bezerra Barros Gadelha
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Masters Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | - Moacir Franco de Oliveira
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | | | - João Augusto Rodrigues Alves Diniz
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Doctoral Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | - Igor Renno Guimarães Lopes
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
- Doctoral Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
| | | | - Alexsandra Fernandes Pereira
- Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil
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Mostafa H, Hussein MT, Abd‐Elnaeim M. Developmental events in the lung of the Japanese quail (
Coturnix coturnix japonica
): Morphological, histochemical and electron‐microscopic studies. Microsc Res Tech 2022; 85:3761-3776. [DOI: 10.1002/jemt.24225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/13/2022] [Accepted: 08/09/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Heba Mostafa
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine Assiut University Assiut Egypt
| | - Manal T. Hussein
- Department of Cell and Tissues, Faculty of Veterinary Medicine Assiut University Assiut Egypt
| | - Mahmoud Abd‐Elnaeim
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine Assiut University Assiut Egypt
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Intussusception Associated with Sand Accumulation in a Greater Rhea (Rhea americana). ACTA VET-BEOGRAD 2021. [DOI: 10.2478/acve-2021-0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
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. We report here the case of death of a greater rhea (Rhea americana) by intestinal intussusception secondary to the ingestion of a large amount of sand. The animal was bred at the Center for Multiplication of Wild Animals of the Federal Rural University of the Semi-Arid. The animal died after presenting clinical signs of apathy, weakness, prostration, and inability to move, drink water, or eat. After death, the carcass was immediately sent for necropsy. During necropsy, intussusception was found involving the jejunum, ileum, and colon. The duodenum contained large amounts of coarse sand. The invaginated intestinal segments were reddish in color, with necrotic spots, and covered by a fibrinous exudate. Histopathological examination of the invaginated segments showed necrosis of the enterocytes, detachment of the intestinal epithelium, and the presence of inflammatory cells. The ingestion of a large amount of sand may have resulted in altered intestinal transit, contributing to the occurrence of intussusception, which resulted in ischemic alterations, intestinal necrosis, and consequent death of the animal.
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