Radiographic patterns and positioning recommendations for skull radiology in the brown brocket, Subulo gouazoubira (Fischer,1814)

Authors

Abstract

Incidents related to human activities, such as roadkill and illegal hunting, result in a high number of small deer being referred to triage and rehabilitation centers in Brazil, with multiple fractures being the most common injuries. Rapid and standardized radiographic diagnosis is essential for the emergency management of these animals. This study evaluated the most efficient radiographic projections for examining the cranial structures of the brown brocket deer (Subulo gouazoubira), using heads of eight individuals that died during the rehabilitation process at Wildlife Rehabilitation Center (Wildlife Rehabilitation Center) and which, after radiographic analysis procedures, were osteologically prepared for comparison. The most suitable projections proved to be the lateral, lateral with natural obliquity, dorsoventral, and rostrocaudal views, with the ventrodorsal view at 20° with 45° ventroflexion indicated as complementary for evaluating the tympanic bulla. The results highlight the importance of specific positioning protocols for accurate visualization of the nasal cavity, paranasal sinuses, and tympanic bullae. This study establishes, for the first time, a standardized emergency radiographic protocol for cervids with suspected cranial trauma, contributing to faster diagnoses and more assertive clinical decisions in rehabilitation centers.
Keywords: cervid; diagnostic imaging; head.

Downloads

Download data is not yet available.

References

1. Duarte JMB, Reis ML. Plano de ação nacional para conservação dos cervídeos ameaçados de extinção. Brasília: Instituto Chico Mendes de Conservação da Biodversidade. 2012; 126.

2. Rossi RV, Bodmer R, Duarte JMB. et al. Amazonian brown brocket deer Mazama nemorivaga (Cuvier,1817). Neotropical Cervidology, Biology and Medicine of Latin American Deer. Funep/IUCN. 2010; 393.

3. Black-Décima PA. Brown Brocket Deer Mazama gouazoubira (Fisher 1814) Neotropical cervidology: biology and medicine of Latin America deer. 2010; 190-201.

4. Black-Decima PA, Vogliotti A. Mazama gouazoubira . Lista vermelha de espécies ameaçadas da IUCN. 2016; Available at: https://bibliotecadigital.ufrgs.br/bitstream/handle/10183/283242/001194883.pdf?sequence=1&isAllowed=y

5. Bergallo HG, Rocha CFD, Alves MAS. et al. A fauna Ameaçada de extinção no Estado do Rio de Janeiro. EDURJ. 2000; 66.

6. Fontana CS, Bencke GAR. Livro vermelho da fauna ameaçada de extinção no Rio Grande do Sul. EDIPUCRS. 2003; 632.

7. Mikich SB, Bérnil SRS. Livro Vermelho da fauna ameaçada no Estado do Paraná. Instituto Ambiental do Paraná. 2004; 763.

8. Duarte JMB. et al. Avaliação do risco de Extinção do Veado-catingueiro Mazama gouazoubira (Fischer 1814), no Brasil. Biodiversidade Brasileira, 2012; 2 (3): 50-58. https://doi.org/10.37002/biodiversidadebrasileira.v2i1.238

9. Nisbet HO. et al. Treatment results of traumatic injuries in 20 Roe Deer (Capreolus capreolus): a retrospective study. Kafkas Universitesi Veteriner Fakultesi Dergisi, 2010; 16 (4):17-622. https://vetdergikafkas.org/uploads/pdf/pdf_KVFD_700.pdf

10. Kaneps JA. Orthopedic conditions of small ruminants: llama, sheep, goat, and deer. Veterinary Clinics of North America: Food Animal Practice, Advances in Ruminant Orthopedics, Philadelphia, 1996; 12 (1): 211-232. https://doi.org/10.1016/S0749-0720(15)30444-8

11.Reeder DM, Kramer KM. Stress in Free-Ranging Mammals: IntegratingPhysiology, Ecology, and Natural History. Journal of Mammalogy. 2005; 86 (2). Available at: https://doi.org/10.1644/BHE-003.1

12. Mannheim J. et al. Standardization of Small Animal Imaging—Current Status and Future Prospects. Molecular Imaging and Biology. 2017; 20. 1-16. Available at: https://doi.org/10.1007/s11307-017-1126-2

13. Taube MJ. et al. Heart measurements of non-human primates by radiographic techniques. Ciência Animal Brasileira. 2019; 20. Available at: https://doi.org/10.1590/1089- 6891v20e-52786

14. Willians J. Orthopedic radiography in exotic animal practice. Vet. Clin. North Am. Exot. Anim. Pract. 2002; 1. 43-44. Available at: https://doi.org/10.1016/S1094-9194(03)00043-4

15. Souza RAM. Determinação da idade e biologia reprodutiva de Mazama rafinesque, 1817 (Artiodactyla, Cervidae) [Tese] [Internet]. Paraná: - Universidade Federal do Paraná; 2019. [acesso em 2018 nov 12]. Available at: https://hdl.handle.net/1884/61888

16. Souza JP. et al. Osteología del Miembro Torácico de la Corzuela Parda Mazama gouazoubira (G. Fischer, 1814) (Cetartiodactyla: Cervidae). International Journal of Morphology. 2017; 35 (3): 22-89. http://dx.doi.org/10.4067/S0717-95022017000300031

17. Silva GM, Stipp ACM, Oliveira, LR. et al. Descriptive skull morphology of Subulo gouazoubira and Mazama nana (Artiodactyla, Cervidae). Ciência Rural, Santa Maria. 2025; 55 (2): https://doi.org/10.1590/0103-8478cr20230692

18. Schimming BC. et al. Osteology and radiographic anatomy of the hind limbs in Marsh deer (Blastocerusdichotomus). PesquisaVeterinária Brasileira. 2015; 35 (12): 997-1001. https://doi.org/10.1590/S0100-736X2015001200009

19. Thrall DE. Diagnóstico de Radiologia Veterinária. 2019; 7. 01-1000. https://app.minhabiblioteca.com.br/books/9788595150515

20. International committee on veterinary gross anatomical nomenclature (icvgan). Terminologia anatômica: Nomina anatômica veterinária. Rio de Janeiro: Interamericana; 2017.

21. Baroni CO. et al. Morphology and morphometry of the foramen magnum in Toy Poodle and Yorkshire terrier dogs. Ciência Rural. 2011; 41 (7): 1239-1244. https://doi.org/10.1590/S0103-84782011000700021

22. Keneisenuo OP. et al. A comparative study on the morphology, radiography and computed tomography of the skull bones of barking deer (Muntiacus muntjak) and sambar deer (Rusa unicolor). Folia Morphologica. 2021. Available at: https://doi.org/10.5603/FM.a2021.0015

23. Choudhary OP, Singh I. Morphogical and radiographic studies on the skull of Indian blackbuck (Antilope cervicapra). Int. J. Morphol. 2016; 16(2): 775–783. Available at: http://dx.doi.org/10.4067/S0717-95022020000501473

Published

2026-03-03

How to Cite

BRAUNER, Rodrigo Kegles; CASTRO, Mauren Alana de; DORNELLES, José Eduardo Figueiredo; VALENTE, Ana Luísa Schifino. Radiographic patterns and positioning recommendations for skull radiology in the brown brocket, Subulo gouazoubira (Fischer,1814). Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 27, 2026. Disponível em: https://revistas.ufg.br/vet/article/view/82708. Acesso em: 5 mar. 2026.

Issue

Section

VETERINARY MEDICINE

Data statement

  • The research data is available on demand, condition justified in the manuscript