Resultado da pesquisa (409)

Termo utilizado na pesquisa Santos

#1 - Echocardiographic evaluation of crab-eating foxes (Cerdocyon thous) in captivity

Abstract in English:

The cardiac evaluation of wild animals is still a wide and largely unknown field for several species. Thus, the objectives of this study were to evaluate cardiac function through echocardiography and obtain echocardiographic values for crab-eating foxes under pharmacological restraint. This study was done with eight males and two females under pharmacological containment of intramuscular acepromazine with meperidine followed by intravenous propofol. In the two-dimensional mode, the diameter of the aorta and left atrium and the LA/Ao ratio were obtained. In M-mode, the internal diameter of the left ventricle was measured during diastole and systole, and the shortening fraction was calculated. In the transmitral flow using the pulsed Doppler mode, we analyzed the E-wave velocity peak, A-wave velocity peak, and E/A ratio. The analysis of the isovolumetric relaxation time was performed in the apical view of five chambers using an intermediate flow between mitral influx and aortic flow, and the E-wave deceleration time was calculated. The measurements of position and dispersion of all variables were calculated, and the respective confidence intervals were set at 95%. The Doppler echocardiographic values are closer to domestic dogs, the left ventricle internal diameter in diastole was lower, and the ejection fraction was closer to that of maned wolf (Chrysocyon brachyurus). Cardiology parameters found in this study can be used as specific values for this species in the evaluation of cardiac function, as well as in other additional studies in wild animal cardiology.

Abstract in Portuguese:

A avaliação cardíaca de animais selvagens constitui um campo de pesquisa ainda pouco explorado para diversas espécies. Nesse contexto, este estudo teve como objetivos a avaliação da função cardíaca por meio da ecocardiografia e a obtenção de valores ecocardiográficos para cachorros do mato submetidos a contenção farmacológica. O estudo foi conduzido em oito machos e duas fêmeas, os quais foram submetidos à contenção farmacológica com acepromazina intramuscular e meperidina, seguida de propofol intravenoso. No modo bidimensional, as seguintes medidas foram obtidas: o diâmetro da aorta, do átrio esquerdo e a relação AE/Ao. No modo M, foram medidas a dimensão interna do ventrículo esquerdo durante a diástole e a sístole, e a fração de encurtamento foi calculada. Utilizando o modo Doppler pulsado no fluxo transmitral, foram analisados o pico de velocidade da onda E, o pico de velocidade da onda A e a relação E/A. A análise do tempo de relaxamento isovolumétrico foi realizada no corte apical de cinco câmaras, por meio de um fluxo intermediário entre o influxo mitral e o fluxo aórtico, e o tempo de desaceleração da onda E foi calculado. Todas as variáveis tiveram suas medidas de posição e dispersão calculadas, junto com intervalos de confiança a 95%. Os valores ecocardiográficos obtidos com a técnica Doppler se aproximaram mais dos observados em cães domésticos, com o diâmetro interno do ventrículo esquerdo na diástole apresentando valores menores. Além disso, a fração de ejeção se assemelhou mais à observada em lobos-guarás (Chrysocyon brachyurus). Os parâmetros cardiológicos identificados neste estudo podem ser considerados como valores específicos para essa espécie na avaliação da função cardíaca, e podem ser utilizados como referência em estudos adicionais sobre a cardiologia de animais selvagens.


#2 - Abamectin poisoning in adult beef cattle and calves in northern and midwestern Brazil

Abstract in English:

Abamectin is an anthelminthic widely used in agriculture, human, and veterinary medicine. The predomination in cases of abamectin toxicosis are neurological changes such as ataxia, lethargy, coma, tremors, convulsions, mydriasis, and blindness. This article describes the clinical, morphological, and toxicological results of cattle accidentally poisoned by abamectin on properties in the states of Rondônia and Mato Grosso, Brazil. Clinical and epidemiological data on the affected herd were collected from the owners, employees, and veterinarians of the properties. A clinical examination was conducted, and a necropsy was performed on the affected animals, with organ samples collected for histological and toxicological analysis. The main clinical signs observed were ataxia, apathy, and death. No significant gross or histologic changes were present. The concentration of abamectin in the brains and livers was > 25.00 μg/kg. The predisposing factors for the occurrence of these outbreaks were visual estimation of cattle weight, standardization of medication doses for batches of cattle, and medication bottle error during application resulting in poisoning and death of cattle. The findings emphasize the need to improve animal management and team training prior to drug application in properties.

Abstract in Portuguese:

Abamectina é um medicamento amplamente utilizado na agricultura, medicina humana e veterinária. Na intoxicação por abamectina predominam alterações neurológicas como ataxia, letargia, coma, tremores, convulsões, midríase e cegueira. Este trabalho descreve os achados clínicos, morfológicos e análises toxicológicas em bovinos de corte acidentalmente intoxicados por abamectina nos Estados de Rondônia e de Mato Grosso, Brasil. Histórico, dados epidemiológicos e informações clínicas foram colhidos com proprietários, colaboradores e médicos veterinários nas propriedades. Foi realizado exame clínico nos bovinos e posteriormente, necropsia com colheita de amostras dos órgãos para análise histológica e toxicológica. Os principais sinais encontrados foram ataxia, apatia e morte. Não foram notadas alterações morfológicas significativas. A concentração de abamectina nos encéfalos e fígados foi > 25,00 μg/kg. Fatores predisponentes para a ocorrência desses surtos foram a estimativa visual de peso dos bovinos, padronização de doses do medicamento para os lotes e erro de frasco do medicamento durante a aplicação. Os achados enfatizam a necessidade de melhorias no manejo animal e treinamento da equipe antes do período de aplicação de medicamentos nas propriedades.


#3 - Simultaneous occurrence of type C botulism in poultry and dogs

Abstract in English:

Botulism is a serious disease caused by neurotoxins produced by Clostridium botulinum, an anaerobic spore-forming bacterium commonly found in the environment and the intestinal tract of animals. The disease occurs through the ingestion of food or water contaminated with preformed toxins, leading to progressive flaccid paralysis across various susceptible species. This study reports the clinical, epidemiological, and laboratory aspects of the simultaneous occurrence of type C botulism in domestic birds (chickens and ducks) and dogs on a farm in Rio Pomba, Minas Gerais, Brazil. The farm housed 47 chickens, two ducks, and seven dogs. Over approximately 15 days, 40 chickens (85.1%) and one duck (50%) fell ill and died. Among the seven dogs, five (71.4%) exhibited clinical signs, and two (28.6%) ultimately died. Diagnosis of botulism was confirmed through bioassay technique and neutralization using homologous antitoxin in mice, which identified botulinum toxin type C in serum samples from two chickens with clinical signs, in samples from two necropsied chickens and in one water sample. The most probable transmission route was likely the remains of a decomposing bovine carcass, and the water that had accumulated around it, to which the chickens, ducks and dogs had access, highlighting the importance of proper carcass disposal to prevent disease outbreaks.

Abstract in Portuguese:

Botulismo é uma doença grave causada por neurotoxinas produzidas por Clostridium botulinum, uma bactéria anaeróbica formadora de esporos comumente encontrada no ambiente e trato intestinal de animais. A doença ocorre pela ingestão de alimentos ou água contaminados com toxinas pré-formadas, levando à paralisia flácida progressiva em várias espécies suscetíveis. Este estudo relata os aspectos clínicos, epidemiológicos e laboratoriais de um surto de botulismo tipo C que afetou aves domésticas (galinhas e patos) e cães em uma fazenda no município de Rio Pomba, Minas Gerais, Brasil. A fazenda abrigava 47 galinhas, dois patos e sete cães. Ao longo de aproximadamente 15 dias, 40 galinhas (85,1%) e um pato (50%) adoeceram e morreram. Entre os sete cães, cinco (71,4%) apresentaram sinais clínicos e dois (28,6%) acabaram morrendo. O diagnóstico de botulismo foi confirmado por meio da técnica de bioensaio e neutralização com antitoxina homóloga em camundongos, que identificou toxina botulínica tipo C em amostras de soro de duas galinhas com sinais clínicos, em amostras de duas galinhas necropsiadas e em uma amostra de água. A rota de transmissão mais provável foi provavelmente os restos de uma carcaça bovina em decomposição e a água que havia se acumulado ao redor dela, à qual as galinhas, patos e cães tiveram acesso, o que destaca a importância do descarte adequado de carcaças para prevenir surtos da doença.


#4 - Bovine abortion caused by Ureaplasma diversum infection in Midwest Brazil

Abstract in English:

Ureaplasma diversum has been reported to infect the respiratory and genital systems in cattle, leading to numerous reproductive alterations, including abortions. However, detailed and comprehensive studies of fetal pathology in naturally infected cases are lacking in the scientific literature to this date. Therefore, this study describes the pathological lesions in three fetuses spontaneously aborted by three heifers naturally infected with U. diversum localized in three municipalities from Mato Grosso State, Brazil. The fetal necropsy revealed diffusely reddened and unexpanded lungs. Histologically, diffuse moderate subacute to chronic neutrophilic and histiocytic bronchointerstitial pneumonia with bronchial-associated lymphoid tissue hyperplasia. U. diversum was identified in fetal tissues by molecular approaches and sequencing. To our knowledge, this is the first description of bovine abortion caused by U. diversum infection in the Midwest of Brazil.

Abstract in Portuguese:

Ureaplasma diversum infecta os sistemas respiratório e genital de bovinos, levando a várias alterações reprodutivas, inclusive abortos. No entanto, até o momento, não há na literatura científica, estudos detalhados e abrangentes no Brasil sobre as lesões fetais em casos naturalmente infectados. Portanto, este artigo descreve as lesões em três fetos espontaneamente abortados por três novilhas naturalmente infectadas por U. diversum localizadas em três municípios do estado de Mato Grosso, Brasil. A necropsia fetal revelou pulmões difusamente avermelhados e não expandidos. Histologicamente, havia pneumonia neutrofílica e histiocítica broncointersticial subaguda a crônica difusa e moderada com hiperplasia do tecido linfoide associado aos brônquios. U. diversum foi identificado em tecidos fetais após a realização de técnicas moleculares e sequenciamento. Esta parece ser a primeira descrição de aborto bovino causado por infecção por U. diversum na região Centro-Oeste do Brasil.


#5 - Mortality by Entamoeba invadens in green anacondas (Eunectes murinus) from a zoological garden

Abstract in English:

Five green anacondas (Eunectes murinus) from the same enclosure died sequentially in the zoological garden of the Federal University of Mato Grosso, Midwest Brazil. The primary lesions in all snakes were severe necrotizing enterocolitis and hepatitis, associated with intralesional positive-PAS trophozoites morphologically compatible with Entamoeba. The protozoa were randomly distributed in the intestine and liver of the five anacondas and in the stomachs, kidneys, and lungs of three anacondas. The snake enclosure had contact with the room next door, which housed alligators and turtles. Based on clinical history, gross and histopathological findings, and immunofluorescence test, which positively marked the respective trophozoites, it was concluded that Entamoeba invadens infected the anacondas.

Abstract in Portuguese:

Cinco sucuris verdes (Eunectes murinus) do mesmo recinto morreram sequencialmente no jardim zoológico da Universidade Federal de Mato Grosso, em Cuiabá, Centro-Oeste do Brasil. As lesões primárias em todas as serpentes foram enterocolite e hepatite necrótica severa, associada a trofozoítos intralesionais PAS positivos, morfologicamente compatíveis com Entamoeba. Os protozoários estavam distribuídos aleatoriamente no intestino e fígado das cinco sucuris e nos estômagos, rins e pulmões de três sucuris. O recinto das serpentes tinha contato com o recinto vizinho que abrigava jacarés e tartarugas. Com base nos achados clínicos, macroscópicos, histopatológicos, e no teste de imunofluorescência, que marcou trofozoítos, concluiu-se que as sucuris estavam infectadas por Entamoeba invadens.


#6 - Epidemiological characterization and risk factors associated with brucellosis in sheep in the municipality of Rio Branco, Acre

Abstract in English:

Brucellosis in sheep is a chronic infectious disease with a worldwide distribution, primarily caused by the bacterium Brucella ovis. The disease is characterized by the development of epididymitis and sperm granulomas, which result in reproductive disorders and are responsible for significant health problems and economic losses in sheep farming. This cross-sectional sampling study, the first of its kind in Western Amazonia, aimed to characterize the seroprevalence of brucellosis in sheep from rural properties in the municipality of Rio Branco, Acre, and to analyze the risk factors associated with the infection. Forty-eight sheep farms in the municipality were selected, and 511 blood samples were collected from animals of both sexes, starting at six months of age. Serological samples were tested using an indirect enzyme-linked immunosorbent assay (iELISA) to detect anti-Brucella ovis antibodies (IgG) with the crude B. ovis extract antigen and, in a complementary manner, with the purified recombinant periplasmic protein BP26r. Epidemiological questionnaires were applied during the visit to the farms. Of the farms with sampled sheep, 33.4% (16/48) had at least one seropositive animal, and 5.5% (28/511) of the sheep tested were considered seropositive. Among the risk factors analyzed by multiple logistic regression, the “segregation of sick animals” (odds ratio = 3.67; p = 0.043) showed epidemiological and statistical relevance for the control of B. ovis infection. The results obtained in this study indicate that B. ovis infection occurs in sheep from Acre, in the Western Amazon, requiring the implementation of control and prophylaxis measures, especially health education, to prevent or minimize the spread of the disease in herds in Acre.

Abstract in Portuguese:

A brucelose nos ovinos é uma doença infectocontagiosa, de evolução crônica, com distribuição cosmopolita, causada primordialmente pela bactéria Brucella ovis. A enfermidade é caracterizada pelo desenvolvimento de epididimite e granulomas espermáticos que resultam em distúrbios reprodutivos, sendo responsável por relevantes problemas sanitários e vultosos prejuízos econômicos para a ovinocultura. Este estudo transversal por amostragem, inédito na Amazônia Ocidental, teve como objetivo caracterizar a soroprevalência da brucelose em ovinos de propriedades rurais no município de Rio Branco, estado do Acre, e análise dos fatores de risco associados à infecção. Foram selecionadas 48 propriedades com criação de ovinos do município e colhidas 511 amostras de sangue de animais de ambos os sexos, a partir de seis meses de idade. As amostras sorológicas foram testadas pelo ensaio imunoenzimático indireto (ELISAi) para detecção de anticorpos (IgG) anti-Brucella ovis com o antígeno extrato bruto de B. ovis e, de modo complementar, com a proteína periplasmática recombinante purificada BP26r. Durante a visita às propriedades foram aplicados questionários epidemiológicos. Das propriedades rurais com ovinos amostrados, 33,4% (16/48) apresentaram pelo menos um animal sororreagente e 5,5% (28/511) dos ovinos testados foram considerados soropositivos. Dentre os fatores de riscos analisados por regressão logística múltipla, a “segregação de animais doentes” (odds ratio = 3,67; p = 0,043) apresentou relevância epidemiológica e estatística para o controle da infecção por B. ovis. Os resultados obtidos neste estudo indicam que ocorre a infecção por B. ovis nos ovinos do Acre, Amazônia Ocidental, requerendo a implantação de medidas de controle e profilaxia, notadamente de educação em saúde, que impeçam ou minimizem a difusão da doença nos rebanhos acreanos.


#7 - Bovine enzootic hematuria in the Southern Cone of Rondônia

Abstract in English:

Radiomimetic plants are those that can mimic the effects of radiation. Ferns of the genus Pteridium are the main plants with this characteristic. The ingestion of bracken fern results in three forms of clinical disease in cattle: one acute, called hemorrhagic diathesis, and two chronic ones, in the form of squamous cell carcinomas in the digestive system and bovine enzootic hematuria (BEH). Although Pteridium spp. occur in the state, there are no reports of poisoning in Rondônia. The objective of this study is to describe the epidemiological, clinical, and pathological features of BEH caused by Pteridium spp. consumption in Rondônia. The investigation began with the histories of rural properties in the Southern Cone of Rondônia that had cattle with diseases compatible with BEH. These properties were visited, the pastures and herd were inspected, and the disease history was compiled. Epidemiological and pasture data from seven rural properties were analyzed. Pteridium esculentum invaded grazing areas on seven properties, and all owners reported hematuria in cattle on these properties. On one property, a nine-year-old female Nelore cow presenting clinical signs of BEH was euthanized and necropsied. The gross damage was confined to the urinary bladder and characterized by marked, diffuse thickening of the bladder wall and mucosal nodules. Histopathology and immunohistochemistry revealed nonpapillary and infiltrating transitional cell carcinoma. On three rural properties with a history of BEH, Pteridium was absent in the pastures, but ferns characterized as Christella conspersa and Pityrogramma calomelanos were present. The epidemiological, clinical, and pathological findings confirm the occurrence of BEH associated with the consumption of Pteridium spp. in the Southern Cone of Rondônia. Further research is needed to determine the role of other ferns in the development of BEH.

Abstract in Portuguese:

Plantas radiomiméticas são aquelas que possuem a capacidade de mimetizar o efeito da radiação. Samambaias do gênero Pteridium são as principais plantas com essa característica. O consumo de Pteridium spp. está associado a ocorrência de três quadros clínicos: um agudo, chamado diátese hemorrágica e dois crônicos, na forma de carcinomas de células escamosas no sistema digestório e de hematúria enzoótica bovina (BEH). Apesar da ocorrência de Pteridium spp. no estado, não há relatos de quadros de intoxicação em Rondônia. O objetivo deste trabalho é descrever os achados epidemiológicos, clínicos e os aspectos lesionais referentes ao quadro de BEH pelo consumo de Pteridium spp. em Rondônia. O processo de investigação iniciou-se a partir de históricos de propriedades rurais que apresentavam bovinos com enfermidades compatíveis com BEH na região do Cone Sul de Rondônia. Estas propriedades foram visitadas, as pastagens e o rebanho foram vistoriados e o histórico da doença foi levantado. Foram analisados os dados epidemiológicos e pastagens de sete propriedades rurais. Nessas propriedades, havia invasão das áreas de pastejo por Pteridium esculentum e em todas elas os proprietários relataram hematúria em bovinos. Em uma propriedade, um bovino, fêmea, Nelore de nove anos apresentou o quadro clínico de BEH e foi submetido a eutanásia e necropsia. As lesões macroscópicas estavam restritas a vesícula urinária e foram caracterizadas por espessamento acentuado e difuso da parede da vesícula urinária e nódulos multifocais na mucosa O exame histopatológico e imunohistoquímico confirmou o diagnóstico de carcinoma de células de transição infiltrativo e não papilar. Em três propriedade rurais com histórico de BEH não havia Pteridium nas pastagens e sim samambaias caracterizadas como Christella conspersa and Pityrogramma calomelanos. Os achados epidemiológicos, clínicos e patológicos confirmam a ocorrência de BEH associada ao consumo de Pteridium spp. no Cone Sul de Rondônia. Novas pesquisas são necessárias para estudar a participação de outras samambaias como causa de BEH.


#8 - Antimicrobial activity of plant extracts and compounds over resistant Gram-negative isolates from domestic animals

Abstract in English:

Gram-negative bacteria present significant challenges due to their antimicrobial resistance. Members of the Enterobacterales order, such as Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis, pose the greatest risk to public health because of their numerous mechanisms of antimicrobial resistance. Therefore, this study aimed to evaluate the antimicrobial activity of crude ethanolic extracts (CEE) of Hymenaea martiana Hayne (jatobá), Commiphora leptophloeos (Mart.) Gillett (imburana), Ocimum campechianum Mill. (alfalvaca) and Morus nigra L. (amora miura), as well as the hexane and ethyl acetate fractions of the last one, against clinical isolates of Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis obtained from domestic animals. Furthermore, three commercially available compounds – gallic acid (GA), p-Coumaric acid (p-CA), benzoic acid (BA) – and one conducting polymer (synthesized for the test), polypyrrole (Ppy), were also evaluated for their antimicrobial potential against these isolates. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the extracts and compounds were determined. All E. coli and K. pneumoniae isolates were resistant to the tested extracts. The crude ethanolic extracts showed inhibitory activity against P. mirabilis isolates at concentrations of 3,125 µg/mL for H. martiana and 12,500 µg/mL for O. campechianum. However, C. leptophloeos, M. nigra, and their fractions (hexane and ethyl acetate), as well as GA, did not exhibit bactericidal activity against any of the pathogens. Benzoic acid demonstrated both inhibitory and bactericidal activity against all isolates, with pronounced bactericidal activity against two K. pneumoniae isolates (MBC of 2,000 µg/mL). p-Coumaric acid showed inhibitory activity against all isolates and bactericidal activity (MBC of 5,000 µg/mL) against 66.66% (4/6) of the isolates, proving effective against E. coli and K. pneumoniae. Polypyrrole exhibited the most potent antibacterial activity, inhibiting 100% of the isolates and showing bactericidal activity against 83.33% (5/6) of the clinical isolates tested. These results suggest that the tested extracts and compounds, particularly polypyrrole, may offer a viable alternative against multidrug-resistant microorganisms.

Abstract in Portuguese:

Gram-negative bacteria present significant challenges due to their antimicrobial resistance. Members of the Enterobacterales order, such as Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis, pose the greatest risk to public health because of their numerous mechanisms of antimicrobial resistance. Therefore, this study aimed to evaluate the antimicrobial activity of crude ethanolic extracts (CEE) of Hymenaea martiana Hayne (jatobá), Commiphora leptophloeos (Mart.) Gillett (imburana), Ocimum campechianum Mill. (alfalvaca) and Morus nigra L. (amora miura), as well as the hexane and ethyl acetate fractions of the last one, against clinical isolates of Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis obtained from domestic animals. Furthermore, three commercially available compounds – gallic acid (GA), p-Coumaric acid (p-CA), benzoic acid (BA) – and one conducting polymer (synthesized for the test), polypyrrole (Ppy), were also evaluated for their antimicrobial potential against these isolates. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the extracts and compounds were determined. All E. coli and K. pneumoniae isolates were resistant to the tested extracts. The crude ethanolic extracts showed inhibitory activity against P. mirabilis isolates at concentrations of 3,125 µg/mL for H. martiana and 12,500 µg/mL for O. campechianum. However, C. leptophloeos, M. nigra, and their fractions (hexane and ethyl acetate), as well as GA, did not exhibit bactericidal activity against any of the pathogens. Benzoic acid demonstrated both inhibitory and bactericidal activity against all isolates, with pronounced bactericidal activity against two K. pneumoniae isolates (MBC of 2,000 µg/mL). p-Coumaric acid showed inhibitory activity against all isolates and bactericidal activity (MBC of 5,000 µg/mL) against 66.66% (4/6) of the isolates, proving effective against E. coli and K. pneumoniae. Polypyrrole exhibited the most potent antibacterial activity, inhibiting 100% of the isolates and showing bactericidal activity against 83.33% (5/6) of the clinical isolates tested. These results suggest that the tested extracts and compounds, particularly polypyrrole, may offer a viable alternative against multidrug-resistant microorganisms.


#9 - Pathological changes in palatine tonsils of slaughtered water buffaloes (Bubalus bubalis)

Abstract in English:

This study evaluated palatine tonsils from 327 water buffaloes collected in a slaughterhouse located in the city of Belém, Pará State, Brazil, over four months (nine sample collecting visits). The overwhelming majority (84.71%) of these buffaloes came from Marajó Island, Pará State, Brazil. The main pathological findings were crypt dilatations/keratin cysts (96.0%, 314 cases), mild to moderate follicular lymphoid hyperplasia (93.0%, 304 cases), crypt abscesses (79.8%, 261 cases), tonsillar corpuscles (31.2%, 102 cases) and tuberculoid granulomas (1.53%, 5 cases). Acid-fast bacilli (AFB) were observed in 20% (1 out of 5 cases) of these granulomas. The study indicates that pathological evaluation of tonsils in buffaloes can provide details of structural features of the organ in the species and information on subclinical or asymptomatic tonsillitis.

Abstract in Portuguese:

No presente estudo foram avaliadas tonsilas palatinas de 327 bubalinos, coletadas em nove visitas a um abatedouro frigorífico localizado na cidade de Belém, no estado do Pará, Brasil, em um período de quatro meses. Estes bubalinos, em sua ampla maioria (84,71%), eram procedentes da Ilha de Marajó, no estado do Pará, Brasil. Os principais achados patológicos foram dilatações de criptas/cistos de queratina (96,0%, 314 casos), hiperplasia linfoide folicular leve a moderada (93,0%, 304 casos), abscessos de criptas (79,8%, 261 casos), corpúsculos tonsilares (31,2%, 102 casos) e granulomas tuberculoides (1,53%, 5 casos). Bacilos álcool-ácido resistentes (BAAR) foram observados em 20% (1 de 5 casos) destes granulomas. O estudo indica que a avaliação patológica das tonsilas de bubalinos pode fornecer detalhes de características estruturais do órgão na espécie e informações de tonsilites subclínicas ou assintomáticas.


#10 - Body condition, external morphology, parasitology, and histological and biometrical study of the gastrointestinal tract of Sporophila nigricollis and Sporophila caerulescens seized from trafficking in Northeastern Brazil

Abstract in English:

The objective was to analyze Sporophila nigricollis and Sporophila caerulescens in terms of body conditions, parasitological, bacteriological, external biometric measurements, and histological analysis of the gastrointestinal tract. We used 115 individuals apprehended from 2020 to 2021 and sent to the Wild Animal Triage Center, Paraíba, Brazil. Concerning weight, S. nigricollis, females and males presented 9.36±1.36g and 9.70±1.39g, and S. caerulescens with 10.5±0.70g and 11.75±1.28g, being the second heaviest. The body condition in 69.62% of S. nigricollis and 62.50% of S. caerulescens was good. In the fecal microbiological examination, 40.25% of S. nigricollis and 40% of S. caerulescens were positive for Isospora sp. Dispharynx sp. was reported for the first time in S. nigricollis and S. caerulescens. In fecal bacteriology, 95.65% of S. nigricollis were identified with Gram-positive cocci and 73.91% with Gram-positive bacilli. Forty-one animals died and were placed under refrigeration for 48 hours; of these, 31.16% of S. nigricollis and 37.50% of S. caerulescens presented inadequate body conditions. 19.51% had gastrointestinal tract engorgement with hemorrhagic points, and 14.63% had hepatic alteration due to yellowish coloration. The study contributes with subsidies for the taxonomic elucidation of the genus Sporophila, in addition to the knowledge of the conditions in which birds are found in sorting centers, once the destination of most of the seized animals is the release, thus, a potential source of pathogens to the natural environment.

Abstract in Portuguese:

O objetivo foi analisar Sporophila nigricollis e Sporophila caerulescens quanto às condições corporais, parasitológicas, bacteriológicas, medidas biométricas externas e análise histológica do trato gastrointestinal. Foram utilizados 115 indivíduos apreendidos entre 2020 e 2021 e encaminhados ao Centro de Triagem de Animais Silvestres, Paraíba, Brasil. Quanto ao peso, S. nigricollis, fêmeas e machos apresentaram, 9,36±1,36g e 9,70±1,39g, e S. caerulescens com 10,5±0,70g e 11,75±1,28g, sendo o segundo mais pesado. A condição corporal em 69,62% de S. nigricollis e 62,50% de S. caerulescens foi boa. No exame microbiológico fecal, 40,25% de S. nigricollis e 40% de S. caerulescens foram positivos para Isospora sp. Dispharynx sp. foi relatada pela primeira vez em S. nigricollis e S. caerulescens. Na bacteriologia fecal, 95,65% dos S. nigricollis foram identificados com cocos Gram-positivos e 73,91% com bacilos Gram-positivos. Quarenta e um animais morreram e foram colocados sob refrigeração por 48 horas; destes, 31,16% de S. nigricollis e 37,50% de S. caerulescens apresentaram condições corporais inadequadas. 19,51% apresentaram ingurgitamento do trato gastrointestinal com pontos hemorrágicos e 14,63% alteração hepática devido à coloração amarelada. O estudo contribui com subsídios para a elucidação taxonômica do gênero Sporophila, além do conhecimento das condições em que as aves se encontram nos centros de triagem, uma vez que a maior parte dos animais apreendidos tem como destino a soltura, sendo assim, uma potencial fonte de patógenos para o ambiente natural.


Colégio Brasileiro de Patologia Animal SciELO Brasil CAPES CNPQ UFRRJ CFMV