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Title: A retrospective pathology study of two Neotropical deer species (1995-2015), Brazil: Marsh deer (Blastocerus dichotomus) and brown brocket deer (Mazama gouazoubira)
Authors: Navas-Suárez, Pedro Enrique
Diaz Delgado, Josue 
Matushima, Eliana Reiko
Fávero, Cintia Maria
Sarmiento, Angélica Maria Sánchez
Sacristán, Carlos
Ewbank, Ana Carolina
Joppert, Adriana Marques
Duarte, Jose Mauricio Barbanti
Dos Santos-Cirqueira, Cinthya
Cogliati, Bruno
Mesquita, Leonardo Pereira Dos Santos
Maiorka, Paulo César
Catão-Dias, José Luiz
UNESCO Clasification: 310907 Patología
240118-1 Mamíferos. Ungulados
Keywords: Retrospective pathology study
Neotropical deer
Marsh deer
Blastocerus dichotomus, et al
Issue Date: 2018
Journal: PLoS ONE
Abstract: This retrospective study describes the biological and epidemiological aspects, gross and microscopical findings, and most likely causes of death (CD) in two species of Neotropical deer in Brazil. The animals were collected between 1995 and 2015 and represented 75 marsh deer (MD) and 136 brown brocket deer (BBD). Summarized, pneumonia was diagnosed microscopically in 48 MD and 52 BBD; 76 deer suffered trauma, involving dog attack (14 BBD) and vehicle-collision (14 BBD). Pulmonary edema (50 MD; 55 BBD) and congestion (57 MD; 78 BBD) were the most common findings for both species. Additionally, we diagnosed ruminal and myocardial mycosis in MD and BBD, respectively; ovarian dysgerminoma and pancreatic trematodiasis in BBD; and lesions suggestive of malignant catarrhal fever and orbiviral hemorrhagic disease in both species. The main CD in MD was: respiratory (41/75), alimentary, nutritional, trauma and euthanasia (3/75 each). Correspondingly, in BBD were: trauma (34/131), respiratory (30/131) and euthanasia (9/131). Respiratory disease was often defined by pulmonary edema and pneumonia. We provide evidence that respiratory disease, mainly pneumonia, is a critical pathological process in these Neotropical deer species. Although no etiological agents were identified, there is evidence of bacterial and viral involvement. Our results show trauma, mainly anthropogenic, as a common ailment in BBD. We propose to prioritize respiratory disease in future research focused on South American deer health aspects. We believe anthropogenic trauma may be a primary threat for populations of BBD.
DOI: 10.1371/journal.pone.0198670
Source: PLoS ONE,v. 13 (Y)
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