In vitro propagation and conservation of Cattleya tigrina A Rich / Propagação e conservação in vitro de Cattleya tigrina A Rich

Cattleya tigrina A. Rich has been suffering heavy losses in its natural habitat and it is now included in the list of plants that are vulnerable to extinction. The development of in vitro propagation and conservation methodologies, as well as acclimatization, are considered important for species at the risk of extinction, as they promote the multiplication and conservation of the species, hence avoiding the loss of their genetic variability. The present study established the protocol of micropropagation and the in vitro conservation of C. tigrina. For the in vitro propagation, the study tested two volumes of the MS medium and two medium consistencies (stationary liquid and semi-solid). For acclimatization, the substrate mixtures containing pine bark, charcoal, vermiculite, and coconut coir were analyzed. For the in vitro conservation, different concentrations of the salts were tested in the MS medium, together with the osmotic regulators (sucrose, mannitol, and sorbitol), and at two temperatures (18 and 25 °C). The results obtained inferred that the semi-solid medium was superior to the stationary liquid medium in the variables of survival and the presence of roots, while the liquid medium was superior to the semi-solid medium in the number of shoots. For acclimatization, pine bark was the substrate where the plants developed an improved height, with sprouting, and rooting. The conservation was satisfactory and the plants remained viable for a period of 730 days, with the MS medium with 25% of the salts, and at temperatures of 18 ºC or 25 ºC. The plants were propagated in the stationary liquid MS medium (10 mL) and the semi-solid medium (25 mL), while they were acclimatized in pine bark and preserved in the MS medium with 25% of the salts (18 ºC or 25 ºC).

A Cattleya tigrina A. Rich vem sofrendo grandes perdas no seu habitat natural, sendo assim foi inclusa na lista de vulneráveis a extinção. O desenvolvimento de metodologias de propagação e conservação in vitro, bem como de aclimatização, são consideradas importantes para espécies em risco de extinção, por promover a multiplicação e conservação da espécie, evitando a perda do seu material genético. Desta forma, o presente trabalho visou estabelecer protocolo de micropropagação e conservação in vitro de C. tigrina. Para propagação in vitro testou volumes de meio de cultura e duas consistências do meio MS (líquido estacionário e semissólido). Para aclimatização, analisou misturas de substratos contendo casca de pinus, carvão vegetal, vermiculita e pó de coco. Para conservação in vitro, foram testados diferentes concentrações de sais no meio MS, reguladores osmóticos (sacarose, manitol e sorbitol), e duas temperaturas (18 e 25 °C). Os resultados obtidos inferem que, o meio de cultura semissólido foi superior ao líquido nas variáveis sobrevivência e presença de raízes, enquanto que o meio líquido foi superior ao meio semissólido em números de brotos. Na aclimatização a casca de pinus foi o substrato em que as plantas se desenvolveram melhor em altura, brotação e enraizamento. A conservação foi satisfatória e as plantas permaneceram viáveis por um período de 730 dias, usando 25% dos sais MS e temperatura de 18 ºC ou 25 ºC. As plantas podem ser propagadas em meio MS líquido estacionário (10 mL) ou semissólido (25 mL), aclimatizadas em casca de pinus e conservadas em 25% dos sais MS (18 ºC ou 25 ºC).

Isolation and antimicrobial resistance of coagulase-negative staphylococci recovered from healthy tortoises in Minas Gerais, Brazil / Isolamento e resistência aos antimicrobianos de estafilococos coagulase negativos recuperados de jabutis saudáveis em Minas Gerais, Brasil

In the last few decades, there has been a global increase in the adoption of reptiles as companion animals, mainly turtles and tortoises. Considering the popularity of reptiles as pets in Brazil, and a notable lack of data about potentially pathogenic staphylococci in these animals, this study isolated and evaluate the antimicrobial susceptibility of staphylococcal species from healthy tortoises (Chelonoidis carbonaria) in Brazil. During a 12-month period (February 2019 to February 2020), cloacal swabs from 66 healthy tortoises were collected at the Wild Animals Screening Center in Belo Horizonte, Minas Gerais, Brazil. The swabs were plated onto mannitol salt agar for staphylococci isolation, and species identification was performed using MALDI-TOF MS. Antimicrobial susceptibility was investigated using the disk diffusion method, and the presence of the mecA gene was investigated by PCR to detect methicillin resistance. Of the tested animals, 72.7% were positive for staphylococcal isolation. All isolates were coagulase-negative staphylococci (CoNS), and Staphylococcus sciuri (81.3%), and S. xylosus (12.5%) were the most frequently isolated species. The majority of the isolates (56%) were resistant to at least one antimicrobial agent. A high frequency of resistance was observed for penicillin (35.5%) and tetracycline (29.1 %). All strains were susceptible to cefoxitin, chloramphenicol, ciprofloxacin, erythromycin, and gentamicin. All isolates were negative for the mecA gene. The present work suggests that healthy tortoises are mainly colonized by CoNS, especially S. sciuri. Half of the isolates were resistant to at least one antimicrobial, raising questions regarding the possible role of these animals as reservoirs of antimicrobial resistance genes.

Nas últimas décadas, houve um aumento global na adoção de répteis como animais de companhia, principalmente tartarugas e jabutis. Considerando a popularidade dos répteis como animais de estimação no Brasil e a notável falta de dados sobre estafilococos potencialmente patogênicos nesses animais, o objetivo deste estudo foi isolar e avaliar a susceptibilidade antimicrobiana de espécies estafilocócicas de jabutis (Chelonoidis carbonaria) saudáveis no Brasil. Durante um período de 12 meses (fevereiro de 2019 a fevereiro de 2020), suabes cloacais de 66 jabutis saudáveis foram coletados no Centro de Triagem de Animais Silvestres em Belo Horizonte, Minas Gerais, Brasil. Os suabes foram plaqueados em ágar manitol salgado para isolamento de estafilococos e a identificação das espécies foi realizada usando MALDI-TOF MS. A susceptibilidade aos antimicrobianos foi investigada pelo método de difusão em disco, e a presença do gene mecA foi investigada por PCR para detectar resistência à meticilina. Dos animais testados, 72,7% foram positivos para o isolamento estafilocócico. Todos os isolados eram estafilococos coagulase-negativos (CoNS), sendo Staphylococcus sciuri (81,3%) e S. xylosus (12,5%) as espécies mais frequentemente isoladas. A maioria dos isolados (56%) foi resistente a pelo menos um antimicrobiano. Alta frequência de resistência foi observada para penicilina (35,5%) e tetraciclina (29,1%). Todas as estirpes foram sensíveis à cefoxitina, cloranfenicol, ciprofloxacina, eritromicina e gentamicina. Todos os isolados foram negativos para o gene mecA. O presente trabalho sugere que jabutis saudáveis são colonizados principalmente por CoNS, especialmente S. sciuri. Metade dos isolados foram resistentes a pelo menos um antimicrobiano, levantando questões sobre o possível papel desses animais como reservatórios de genes de resistência aos antimicrobianos.

Polioencephalomalacia in sheep - clinical and magnetic resonance imaging findings

Background: Polioencephalomalacia (PEM) is a neurological disease in ruminants, which is characterized by malacia of brain gray matter. Thiamine deficiency and sulfur intoxication are the most common causes of PEM in sheep. Affected animals present signs of cerebrocortical syndrome, including amaurosis, ataxia, head pressing, mental depression, seizures, and opisthotonus. The neurological examination aims to determine the neurolocalization of the lesions and advanced imaging techniques are useful for confirming the affected area(s) in the central nervous system. The aim of this study is to describe clinical features and ante-mortem diagnosis using magnetic resonance imaging (MRI) in a sheep with PEM. Case: A 18-month-old male Dorper sheep from a flock started receiving concentrate 7 days before. According to the owner, no clinical signs of abnormality were observed on the previous morning. However, in the afternoon, the animal became selfisolated and did not follow the flock to the sheepfold. The following day, he was found in recumbency. Physical examination revealed lateral recumbency, rectal temperature 39.5ºC, 52 bpm, 120 bpm, congested mucous membranes, capillary refill time 1 s, ruminal (4/5 min) and intestinal hypomotility. The assessment of the central nervous system revealed a decreased level of consciousness, focal seizures, opisthotonus, and absence of menace response. The following differential diagnoses were listed: PEM, head trauma, focal symmetrical encephalomalacia, bacterial encephalitis, and rabies. Treatment was composed of dexamethasone [0.2 mg/kg - i.v., SID (1st-3rd day), 0.1 mg/kg, i.v., SID (4th-6th day), and 0.05 mg/kg, i.v., SID (7th-9th day)]; mannitol [1 g/kg - i.v. and diazepam 0.4 mg/kg, i.v. single dose at admission]; vitamin B1 [10 mg/kg - i.m., SID], furosemide [1 mg/kg - i.v., SID for 3 days] and sulfadoxine/trimethoprim [30 mg/kg - i.m., SID for 10 days]. After the initial treatment, the patient showed mild clinical improvement; however, the amaurosis was still present. Magnetic resonance imaging of the brain was performed on the 2nd day of hospitalization, showing a symmetrical hypersignal in the parietal and occipital cortices, in the axial and sagittal sequences weighted in T2 and FLAIR. Discussion: This study aimed to describe the clinical signs and MRI findings in a sheep with PEM. In this case, the sudden change to the feed composition probably led to ruminal dysbiosis, inhibition of thiamine-producing microorganisms and proliferation of bacteria that synthesize thiaminase. Thiamine therapy proved to be effective and capable of reverting the clinical signs. The decrease in the level of consciousness, cortical blindness, and opisthotonus are due to alterations in the parietal cortex, in the occipital cortex, and in the cerebellum, respectively, which were demonstrated by hypersignal areas in the MRI. Therefore, the neurolocalization of the lesion based on neurologic examination and the MRI findings were related. The physicochemical and cytological evaluations of the cerebrospinal fluid, and dosage of thiamine and the concentration of hydrogen sulphide in the rumen were not performed. However, the response to thiamine treatment associated with the neurologic examination and MRI findings helped in determining the diagnosis. Additionally, MRI can be used as a useful tool for the ante mortem diagnosis of PEM.

Pneumocephalus and suppurative meningoencephalitis in a dog after craniofacial trauma

Background: Pneumocephalus is characterized by the presence of gas in the intracranial compartment, and it can be developed by trauma, craniofacial surgery or spontaneously. Clinical signs start within days or months after the injury and vary according to the site of involvement. Computed tomography is the ideal diagnostic tool, however skull radiography can also be used. Treatment varies according to the severity of the case, and it can be conservative or associated with surgical intervention in the most severe cases. The purpose of this report is to describe the case of a dog that developed pneumocephalus and suppurative meningoencephalitis after head trauma caused by a bite from another dog. Case: A 2-month-old bitch, mixed breed, with 3.2 kg, was referred to the Veterinary Hospital because it had been bitten on the head by another dog. Shortly after the incident, the animal showed no clinical signs. However, 2 days later, the bitch became depressed and in persistent lateral decubitus. A lesion with a crust of approximately 0.5 cm was found close to the occipital region, with bone irregularity on palpation. The animal was in lateral decubitus with muscular hypotonia, bilateral mydriasis unresponsive to light and stupor. Radiographic images showed parietal fracture and pneumocephalus. Based on the findings of physical and laboratorial exams, diagnosis of suppurative meningoencephalitis and pneumocephalus secondary to craniofacial trauma was established. Empirical broad-spectrum antimicrobial therapy was started in addition to mannitol, corticoids, and analgesics. The animal was referred for surgical debridement by trepanation, when samples were collected to bacterial culture, which was negative. Despites the care, the animal died 14 h after the surgical procedure. Histopathological examination of the frontal cortex was performed, being the histological changes compatible with suppurative meningoencephalitis. Discussion: Dog bites on the head and neck are particularly severe, and can create intracranial bleeding, disfigurement of the face, damage to peripheral structures or cranial fractures. In this report, through radiographic images, it was found that the patient had an intracerebral aerocele, since there was presence of gas in the intracranial compartment. This alteration should always be considered in animals with neurological alterations and a history of craniofacial trauma. The main neurological changes observed in the reported case were unresponsive to mydriasis and altered mental status 2 days after the trauma, and this delay in the onset of clinical signs is frequently reported in cases of pneumocephalus. Neutrophilia and leukocytosis observed can be justified by the suppurative meningoencephalitis, confirmed by the histopathological exam. Antimicrobial therapy should be started as soon as possible, and the choice must be based on their capacity to cross the blood-brain barrier and the broad spectrum. The administration of antibiotics before collecting the material for bacterial culture may explain the negative result of this test, so that it is not possible to determine whether the intracranial gas observed on the radiograph may have developed from the trauma or because of gas-producing bacteria. Head trauma can induce suppurative meningoencephalitis and pneumocephalus even in the absence of perforating wounds at the time of the consultation. The neurological signs can start days after the trauma. Besides the clinical and surgical treatments, the prognosis of any bacterial infection of the central nervous system is poor.

In vitro conservation of Amburana cearensis (Fabaceae) / Conservação in vitro de Amburana cearensis (Fabaceae)

Slow-growth tissue culture allows in vitro conservation of plant genetic resources and is a complementary technique to conventional preservation methods. The objective of this study was to evaluate the effect of the culture medium supplemented with sucrose, mannitol and sorbitol osmotic agents on the induction of in vitro slow growth of A. cearensis, seeking to establish alternative techniques for ex situ conservation of the species. Plants with age of 10 days were inoculated in woody plant medium (WPM) supplemented with different concentrations of sucrose (87.64, 131.46, 175.28 or 262.92 mM) combined with mannitol or sorbitol at varying concentrations (0.0, 43.8, 65.73, 87.64 or 131.46 mM), solidified with 0.7% agar. The following parameters were evaluated: survival percentage, number of senescent leaves, aerial part length, root length, aerial part dry mass, root dry mass; and number of shoots. The conservation of A. cearensis was viable for up to 300 days in WPM supplemented with 262.92 mM of sucrose or the combination of 87.64 mM of sucrose with 43.80 mM of mannitol, because besides achieving a survival percentage greater than 55.0%, the plants conserved in these media presented normal development and the best appearances, with predominance of uniform green leaves during the storage process.(AU)

A cultura de tecidos, através do crescimento mínimo, possibilita a conservação in vitro dos recursos genéticos vegetais, tornando-se uma técnica complementar aos métodos convencionais de conservação. O objetivo deste estudo foi avaliar o efeito do meio de cultura suplementado com sacarose, manitol e agentes osmóticos sorbitol na indução de crescimento mínimo in vitro de A. cearensis, buscando estabelecer técnicas alternativas para conservação ex situ da espécie. Plantas com 10 dias foram inoculadas em meio de cultura WPM suplementado com diferentes concentrações de sacarose (87,64; 131,46; 175,28 e 262,92 mM) combinado com manitol ou sorbitol nas concentrações (0,0; 43,8; 65,73; 87,64 e 131,46 mM), solidificados com 0,7% de ágar. Foram avaliados a porcentagem de sobrevivência, número de folhas senescentes, comprimento da parte aérea, comprimento da raiz, massa seca da parte aérea, massa seca da raiz e número de brotos. A conservação de A. cearensis mostrou-se viável até 300 dias, em meio de cultura WPM suplementado com 262,92 mM de sacarose ou na combinação de 87.64 mM de sacarose com 43.80 mM de manitol. Assim sendo, além de apresentarem porcentagem de sobrevivência acima de 55.0%, as plantas conservadas nesses meios apresentaram um desenvolvimento normal e com melhores aparências com predomínio de folhas verdes uniformes ao longo do processo de armazenamento.(AU)

Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress / Germinação e vigor de genótipos de sorgo forrageiro em diferentes níveis de estresse hídrico e salino

Salinity and water deficiency are abiotic factors which have a strong impact on agricultural activities, especially in arid and semi-arid regions. The aim of this research was to analyse the tolerance of two genotypes of forage sorghum, EA 116 and BRS Ponta Negra, to different levels of water and salt stress during germination. The conditions of water and salt stress were simulated by moistening the substrate with a solution of mannitol and of sodium chloride (NaCl) respectively, with the water potential adjusted to 0 (distilled water), -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa. The variables under analysis were germination percentage, first count, germination speed index, shoot and root length, seedling dry weight, electrolyte leakage and leaf Na+/K+ ratio. The experiment was conducted in a completely randomised design, and distributed in a 2 (genotypes) × 2 (stress condition) × 7 (osmotic potential) factorial scheme, with four replications. The EA 116 and BRS Ponta Negra genotypes show greater tolerance to water stress. The EA 116 cultivar maintained germination under water stress from 0 to -0.6MPa and saline stress from 0 to -0.4 MPa.

A salinidade e a deficiência hídrica são fatores abióticos com forte impacto sobre as atividades agrícolas, especialmente, em regiões áridas e semiáridas. Objetivou-se com a pesquisa analisar a tolerância de dois genótipos de sorgo forrageiro, EA 116 e BRS Ponta Negra, a diferentes níveis de estresse hídrico e salino durante a germinação. As condições de estresse hídrico e salino foram simuladas a partir do umedecimento do substrato com solução de manitol e Cloreto de Sódio (NaCl), respectivamente, com potencial hídrico ajustadas em: 0 (água destilada); -0,1; -0,2; -0,3; -0,4; -0,5 e -0,6 MPa. As variáveis analisadas foram Porcentagem de germinação, primeira contagem, índice de velocidade de germinação, comprimento da parte aérea e radicular, massa seca da plântula, extravasamento de eletrólitos e a relação Na+/K+ das folhas. Conduzido em delineamento inteiramente casualizado, distribuídos em esquema de fatorial 2 (genótipos) × 2 (condição de estresse) × 7 (potencial osmótico), com quatro repetições. Os genótipos EA 116 e BRS Ponta Negra apresentam maior tolerância ao estresse hídrico. A cultivar EA116 manteve a germinação em condições de estresse hídrico de 0 a -0,6 MPa e salina de 0 a -0,4 MPa.

Cats with central nervous system cryptococcosis

Background: Cryptococcosis is a serious fungal infection contracted by humans and animals, and the most common systemic mycosis found in cats. This disease is often contracted through inhalation of fungal propagules. The Central Nervous System (CNS) may be infected through local extension (nasal and frontal sinuses) or via hematogenous route. Similarly to CNS bacterial infection, the clinical signs of neurological dysfunction may be attributed to mass effect (gelatinous mass of fungal microorganisms and fungal granuloma formation) or to a more disseminated inflammatory response to invading microorganisms. The objective of this study is to report one case of a patient with cryptococcal granulomas in the central nervous system and one case of a patient with neurological signs associated to a cryptococcosis. Cases: Case 1. A 3-year-old male mixed breed feline was admitted to a veterinary clinic, located in Porto Alegre, RS, Southern Brazil. The patient presented unsourced behavioral changes, vestibular ataxia and dysphagia caused by inability of coordination. The following tests were performed: complete blood count test, biochemical analysis, computed tomography scan (CT scan), fluid analysis, radiography and toxoplasmosis test. The following medicine were administrated for treatment: fluconazole, dexamethasone, mannitol, phenobarbital and levetiracetam. Fluid therapy was also part of the treatment. Immediately after death, the cat was submitted for necropsy, and a fungal granulomatous meningoencephalomyelitis was diagnosed. Cryptococcus sp. was identified as the causal agent through pathological findings, fungal culture and PCR analysis. Case 2. One year later, another feline was admitted to the same clinic (a 2-year-old female mixed breed) presenting hypersalivation, tremors and excessive vocalization. The patient had contact with the deceased feline. The following tests were performed: complete blood count...

Cats with central nervous system cryptococcosis

Background: Cryptococcosis is a serious fungal infection contracted by humans and animals, and the most common systemic mycosis found in cats. This disease is often contracted through inhalation of fungal propagules. The Central Nervous System (CNS) may be infected through local extension (nasal and frontal sinuses) or via hematogenous route. Similarly to CNS bacterial infection, the clinical signs of neurological dysfunction may be attributed to mass effect (gelatinous mass of fungal microorganisms and fungal granuloma formation) or to a more disseminated inflammatory response to invading microorganisms. The objective of this study is to report one case of a patient with cryptococcal granulomas in the central nervous system and one case of a patient with neurological signs associated to a cryptococcosis. Cases: Case 1. A 3-year-old male mixed breed feline was admitted to a veterinary clinic, located in Porto Alegre, RS, Southern Brazil. The patient presented unsourced behavioral changes, vestibular ataxia and dysphagia caused by inability of coordination. The following tests were performed: complete blood count test, biochemical analysis, computed tomography scan (CT scan), fluid analysis, radiography and toxoplasmosis test. The following medicine were administrated for treatment: fluconazole, dexamethasone, mannitol, phenobarbital and levetiracetam. Fluid therapy was also part of the treatment. Immediately after death, the cat was submitted for necropsy, and a fungal granulomatous meningoencephalomyelitis was diagnosed. Cryptococcus sp. was identified as the causal agent through pathological findings, fungal culture and PCR analysis. Case 2. One year later, another feline was admitted to the same clinic (a 2-year-old female mixed breed) presenting hypersalivation, tremors and excessive vocalization. The patient had contact with the deceased feline. The following tests were performed: complete blood count...(AU)

Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress / Germinação e vigor de genótipos de sorgo forrageiro em diferentes níveis de estresse hídrico e salino

Salinity and water deficiency are abiotic factors which have a strong impact on agricultural activities, especially in arid and semi-arid regions. The aim of this research was to analyse the tolerance of two genotypes of forage sorghum, EA 116 and BRS Ponta Negra, to different levels of water and salt stress during germination. The conditions of water and salt stress were simulated by moistening the substrate with a solution of mannitol and of sodium chloride (NaCl) respectively, with the water potential adjusted to 0 (distilled water), -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa. The variables under analysis were germination percentage, first count, germination speed index, shoot and root length, seedling dry weight, electrolyte leakage and leaf Na+/K+ ratio. The experiment was conducted in a completely randomised design, and distributed in a 2 (genotypes) × 2 (stress condition) × 7 (osmotic potential) factorial scheme, with four replications. The EA 116 and BRS Ponta Negra genotypes show greater tolerance to water stress. The EA 116 cultivar maintained germination under water stress from 0 to -0.6MPa and saline stress from 0 to -0.4 MPa.(AU)

A salinidade e a deficiência hídrica são fatores abióticos com forte impacto sobre as atividades agrícolas, especialmente, em regiões áridas e semiáridas. Objetivou-se com a pesquisa analisar a tolerância de dois genótipos de sorgo forrageiro, EA 116 e BRS Ponta Negra, a diferentes níveis de estresse hídrico e salino durante a germinação. As condições de estresse hídrico e salino foram simuladas a partir do umedecimento do substrato com solução de manitol e Cloreto de Sódio (NaCl), respectivamente, com potencial hídrico ajustadas em: 0 (água destilada); -0,1; -0,2; -0,3; -0,4; -0,5 e -0,6 MPa. As variáveis analisadas foram Porcentagem de germinação, primeira contagem, índice de velocidade de germinação, comprimento da parte aérea e radicular, massa seca da plântula, extravasamento de eletrólitos e a relação Na+/K+ das folhas. Conduzido em delineamento inteiramente casualizado, distribuídos em esquema de fatorial 2 (genótipos) × 2 (condição de estresse) × 7 (potencial osmótico), com quatro repetições. Os genótipos EA 116 e BRS Ponta Negra apresentam maior tolerância ao estresse hídrico. A cultivar EA116 manteve a germinação em condições de estresse hídrico de 0 a -0,6 MPa e salina de 0 a -0,4 MPa.(AU)

Celulite em frangos de corte por Escherichia coli – revisão / Cellulitis in broilers caused by Escherichia coli – review / Celulitis en pollos de engorde causada por Escherichia coli – revision

A avicultura brasileira alcançou, nos últimos anos, níveis de produtividade e de ajuste na sua organização que a colocam como uma das mais competitivas do mundo. O resultado é um produto com qualidade, sanidade e sustentabilidade, que, aliado a preços competitivos, levou o frango brasileiro a estar presente em mais de 150 países. O objetivo deste trabalho é proceder a uma revisão sobre a celulite aviária associada à ocorrência de Escherichia coli, destacando-se a etiopatogenia, o diagnóstico e a prevenção. Devido à fina espessura da pele dos frangos, vários fatores como deficiência nutricional, substâncias irritantes, toxinas, infecções e problemas de manejo podem, potencialmente, levar a lesões cutâneas. A Escherichia coli é uma bactéria do grupo coliforme que fermenta a lactose e o manitol, com produção de ácido e gás a 44,5 ± 0,2oC em 24 horas, produz indol a partir do triptofano, oxidase negativa, não hidrolisa a uréia e apresenta atividade das enzimas ß galactosidase e ß glucoronidase, sendo considerada o indicador mais específico de contaminação fecal recente e de eventual presença de organismos patogênicos. Portanto, a celulite, tendo a E. coli como agente causador, pode ser considerada como uma das mais importantes causas de condenação da carne de frango, gerando interesses em termos econômicos por conta das perdas financeiras impostas aos produtores. Além das perdas econômicas, há os riscos relativos à saúde pública, tornando-se necessária a reavaliação dos critérios de condenação em casos de celulite aviária determinados na legislação.

The Brazilian poultry industry has reached, in recent years, levels of productivity and adjustment in its organization that place it as one of the most competitive in the world. The result is a product with quality, health, sustainability, which, combined with competitive prices, has led Brazilian chicken to be present in more than 150 countries. The aim of this work was to review avian cellulite associated with the occurrence of Escherichia coli, highlighting its etiopathogenesis, diagnosis and prevention. Due to the thin skin of chickens, several factors such as nutritional deficiency, irritants, toxins, infections and handling problems can potentially lead to skin lesions. Escherichia coli is a coliform group bacteria that ferment lactose and mannitol, producing acid and gas at 44.5 ± 0.2oC in 24 hours, producing indole from tryptophan, negative oxidase, do not hydrolyze urea and have activity enzymes ß galactosidase and ß glucoronidase, being considered the most specific indicator of recent fecal contamination and the possible presence of pathogenic organisms. Therefore, cellulite with E. coli as the causative agent can be considered as one of the most important causes of condemnation of chicken meat, generating interests in economic terms due to the financial losses imposed on producers. In addition to economic losses, there are risks related to public health, making it necessary to reassess the condemnation criteria in cases of avian cellulite determined by law.

La avicultura brasileña ha alcanzado, en los últimos años, niveles de productividad y ajuste en su organización que la ubican como una de las más competitivas del mundo. El resultado es un producto con calidad, salud y sostenibilidad que, combinado con precios competitivos, ha llevado a la gallina brasileña a estar presente en más de 150 países. El objetivo de este trabajo fue revisar la celulitis aviar asociada con la aparición de Escherichia coli, destacando su etiopatogenia, diagnóstico y prevención. Debido al grosor delgado de la piel del pollo, varios factores como la deficiencia nutricional, irritantes, toxinas, infecciones y problemas de manejo pueden conducir a lesiones en la piel. Escherichia colies una bacteria del grupo coliforme que fermenta la lactosa y el manitol, con producción de ácido y gas a 44.5 ± 0.2oC en 24 horas, produce indol a partir de triptófano, oxidasa negativa, no hidroliza la urea y tiene actividad enzimas ß galactosidasa y ß glucoronidasa, considerándose el indicador más específico de contaminación fecal reciente y la posible presencia de organismos patógenos. Por lo tanto, la celulitis con E. colicomo agente causal puede considerarse como una de las causas más importantes de condena de la carne de pollo, generando intereses en términos económicos debido a las pérdidas financieras impuestas a los productores. Además de las pérdidas económicas, existen riesgos relacionados con la salud pública, por lo que es necesario reevaluar los criterios de condena en casos de celulitis aviar determinados por la ley.

Celulite em frangos de corte por Escherichia coli revisão / Cellulitis in broilers caused by Escherichia coli review / Celulitis en pollos de engorde causada por Escherichia coli revision

A avicultura brasileira alcançou, nos últimos anos, níveis de produtividade e de ajuste na sua organização que a colocam como uma das mais competitivas do mundo. O resultado é um produto com qualidade, sanidade e sustentabilidade, que, aliado a preços competitivos, levou o frango brasileiro a estar presente em mais de 150 países. O objetivo deste trabalho é proceder a uma revisão sobre a celulite aviária associada à ocorrência de Escherichia coli, destacando-se a etiopatogenia, o diagnóstico e a prevenção. Devido à fina espessura da pele dos frangos, vários fatores como deficiência nutricional, substâncias irritantes, toxinas, infecções e problemas de manejo podem, potencialmente, levar a lesões cutâneas. A Escherichia coli é uma bactéria do grupo coliforme que fermenta a lactose e o manitol, com produção de ácido e gás a 44,5 ± 0,2oC em 24 horas, produz indol a partir do triptofano, oxidase negativa, não hidrolisa a uréia e apresenta atividade das enzimas ß galactosidase e ß glucoronidase, sendo considerada o indicador mais específico de contaminação fecal recente e de eventual presença de organismos patogênicos. Portanto, a celulite, tendo a E. coli como agente causador, pode ser considerada como uma das mais importantes causas de condenação da carne de frango, gerando interesses em termos econômicos por conta das perdas financeiras impostas aos produtores. Além das perdas econômicas, há os riscos relativos à saúde pública, tornando-se necessária a reavaliação dos critérios de condenação em casos de celulite aviária determinados na legislação.(AU)

The Brazilian poultry industry has reached, in recent years, levels of productivity and adjustment in its organization that place it as one of the most competitive in the world. The result is a product with quality, health, sustainability, which, combined with competitive prices, has led Brazilian chicken to be present in more than 150 countries. The aim of this work was to review avian cellulite associated with the occurrence of Escherichia coli, highlighting its etiopathogenesis, diagnosis and prevention. Due to the thin skin of chickens, several factors such as nutritional deficiency, irritants, toxins, infections and handling problems can potentially lead to skin lesions. Escherichia coli is a coliform group bacteria that ferment lactose and mannitol, producing acid and gas at 44.5 ± 0.2oC in 24 hours, producing indole from tryptophan, negative oxidase, do not hydrolyze urea and have activity enzymes ß galactosidase and ß glucoronidase, being considered the most specific indicator of recent fecal contamination and the possible presence of pathogenic organisms. Therefore, cellulite with E. coli as the causative agent can be considered as one of the most important causes of condemnation of chicken meat, generating interests in economic terms due to the financial losses imposed on producers. In addition to economic losses, there are risks related to public health, making it necessary to reassess the condemnation criteria in cases of avian cellulite determined by law.(AU)

La avicultura brasileña ha alcanzado, en los últimos años, niveles de productividad y ajuste en su organización que la ubican como una de las más competitivas del mundo. El resultado es un producto con calidad, salud y sostenibilidad que, combinado con precios competitivos, ha llevado a la gallina brasileña a estar presente en más de 150 países. El objetivo de este trabajo fue revisar la celulitis aviar asociada con la aparición de Escherichia coli, destacando su etiopatogenia, diagnóstico y prevención. Debido al grosor delgado de la piel del pollo, varios factores como la deficiencia nutricional, irritantes, toxinas, infecciones y problemas de manejo pueden conducir a lesiones en la piel. Escherichia colies una bacteria del grupo coliforme que fermenta la lactosa y el manitol, con producción de ácido y gas a 44.5 ± 0.2oC en 24 horas, produce indol a partir de triptófano, oxidasa negativa, no hidroliza la urea y tiene actividad enzimas ß galactosidasa y ß glucoronidasa, considerándose el indicador más específico de contaminación fecal reciente y la posible presencia de organismos patógenos. Por lo tanto, la celulitis con E. colicomo agente causal puede considerarse como una de las causas más importantes de condena de la carne de pollo, generando intereses en términos económicos debido a las pérdidas financieras impuestas a los productores. Además de las pérdidas económicas, existen riesgos relacionados con la salud pública, por lo que es necesario reevaluar los criterios de condena en casos de celulitis aviar determinados por la ley.(AU)

Physiological potential of popcorn seeds submitted to water stress after treated with bioregulator / Potencial fisiológico de sementes de milho pipoca submetidas ao estresse hídrico após tratamento com biorregulador

Seed performance is one of the key points for high productivity in crop development. The objective of this study was to evaluate the physiological potential of popcorn cultivar seeds (IAC 125 and BRS-Ângela) treated with Stimulate® bioregulator under water stress. Popcorn seeds were submitted to different osmotic potential levels 0; -0.1; -0.3; -0.6 and -0.9 MPa and induced by mannitol, after being treated with bioregulator at the dose of 1.5 L 100 kg-1 of seeds. The experiment was conducted in a completely randomized design, in a 5 × 2 × 2 factorial design (osmotic potential levels x cultivars x absence and presence of bioregulator). The variables evaluated were: first count and final count of germination standard, shoot length, primary root length, and dry biomass of seedlings. Treating popcorn seeds with bioregulator is inefficient in improving the physiological potential under normal conditions and little water restriction, but under conditions in which water may be limited, the use of bioregulator positively influences germination, growth, and initial performance of seedlings.(AU)

O desempenho de sementes é um dos pontos chave para que o desenvolvimento da cultura se transforme em alta produtividade. Este trabalho teve por objetivo avaliar o potencial fisiológico de sementes de cultivares de milho pipoca (IAC 125 e BRS-Ângela) tratadas com biorregulador Stimulate®, sob estresse hídrico. Sementes de milho pipoca foram submetidas a diferentes níveis de potencial osmótico 0; -0,1; -0,3; -0,6 e -0,9 MPa, induzidos pelo manitol, após serem tratadas com biorregulador na dose de 1,5 L 100 kg-1 de sementes. O experimento foi conduzido no delineamento inteiramente casualizado, em esquema fatorial 5 × 2 × 2 (níveis de potencial osmótico x cultivares x ausência e presença do biorregulador). As variáveis avaliadas foram: primeira contagem e contagem final do teste padrão de germinação, comprimento da parte aérea, comprimento de raiz primária e biomassa seca das plântulas. O tratamento de sementes de milho pipoca com biorregulador é ineficiente na melhoria do potencial fisiológico em condições normais e de pouca restrição hídrica, porém em condições em que a água possa ser limitada, o uso do biorregulador influencia positivamente na germinação, crescimento e desempenho inicial das plântulas.(AU)

Hematological, biochemical, and blood gas alterations of goat whole blood stored in CPDA-1 and CPD/SAG-M plastic bags / Avaliação dos parâmetros hematológicos, bioquímicos e hemogasométricos do sangue caprino armazenado em bolsas CPDA-1 e CPD/SAG-M

The aim of this study was to evaluate the hematological, biochemical, and blood gas alterations of goat whole blood stored in different blood bags. Seven male, adult, crossbreed goats were used, weighing 62±1.8 kg. Nine hundred milliliters of whole blood from each animal was collected and stored in blood bags (450 ml in each), CPDA-1 (citrate phosphate dextrose-adenine) and CPD/SAG-M (citrate phosphate dextrose with saline-glucose-mannitol) as additive solutions, and kept refrigerated (2-4 ºC) for 42 days. Blood samples were collected from the plastic bags at baseline (T0) and after seven, 14, 21,28, 35, and 42 days for hematological, biochemical, blood gas, and microbiological evaluations. Free hemoglobin, degree of hemolysis, lactate, and pO2were increased in both bags, whereas hydrogen potential (pH) and the total hemoglobin concentration decreased overtime (P<0.05). The red blood cell count, glucose, sodium, and potassium remained stable, compared to the baseline. The CPD/SAG-M bag presented a lower red cell count, globular volume, total hemoglobin, and sodium, and a higher degree of hemolysis and plasma hemoglobin, compared with the CPDA-1 bag. The whole goat blood remained viable for therapeutic use; although, there were some important changes in the variables of the 42-day stored blood in relation to fresh blood (T0). We concluded that the CPDA-1 bag is more suitable for use in the storage of goat blood because of its lower commercial value.(AU)

O objetivo deste estudo foi avaliar as alterações hematológicas, bioquímicas e hemogasométricas do sangue total de caprinos armazenado em diferentes bolsas de sangue. Foram utilizados sete caprinos machos, adultos, sem raça definida, pesando 62±1,8kg. Coletou-se 900 mL de sangue total de cada animal, em duas bolsas plásticas tipos CPDA-1 (citrato-fosfato-dextrose-adenina) e CPD/SAG-M (citrato-fosfato-dextrose com solução aditiva de salina-glicose-manitol), armazenadas sob refrigeração (2-4 °C) durante 42 dias. Amostras de sangue foram coletadas das bolsas no início do estudo (T0) e depois de sete, 14, 21, 28, 35 e 42 dias, para realização de análises hematológicas, bioquímicas, hemogasométricas e microbiológicas. Nas duas bolsas houve aumento da concentração de hemoglobina plasmática, grau de hemólise, lactato, pO2 e redução de hemoglobina total e pH (p<0,05), porém não houve variação no número de hemácias, glicose, sódio e potássio quando comparado ao momento basal (T0). A bolsa CPD/SAG-M apresentou menor número de hemácias, volume globular, concentração de hemoglobina total e sódio, e maiores valores de grau de hemólise e hemoglobina plasmática em relação a bolsa CPDA-1 (P<0,05). Apesar de serem constatadas alterações em importantes variáveis do sangue caprino armazenado durante 42 dias em relação ao sangue fresco (T0), o sangue total caprino permaneceu viável para uso terapêutico. A análise comparativa entre os dois tipos de bolsa revelou uma similaridade de resultados para a grande maioria das variáveis estudadas, portanto a bolsa CPDA-1 pode ser considerada a mais indicada para uso na espécie caprina exclusivamente devido ao seu menor valor comercial.(AU)

Acute death of kangaroos in a zoo due to highly pathogenic Corynebacterium pseudotuberculosis and Yersinia pseudotuberculosis

Background: “Lumpy jaw” is disease effecting wallabies and kangaroos, particularly in Macropus rufus and Macropusgiganteus. In the most serious situations, additional tooth loss and fistulas follow, accompanied by a stench, weight loss,and eventually death due to sepsis or blood poisoning. “Lumpy jaw” disease has seriously affected the normal display andhealth of kangaroos, and cause a huge economic loss. There was an outbreak of jaw infection in kangaroos at the HongshanForest Zoo. Two Macropus giganteus and two Macropus rufus died of “lumpy jaw”. The main objective of the describingcase was to isolate pathogens, provide a basis for follow-up treatment, and serve to establish a disease prevention protocol.Case: Four grown-up kangaroos (two Macropus giganteus and two Macropus rufus) were raised in Hongshan Forest Zoo,which had obviously clinical symptoms, such as oral lesions of pus, necrotic tissue, rotting teeth, then died of “lumpyjaw”. Oral swab samples were collected from the lesion sites of the dying kangaroos. Mice experiments were conducted toexamine the pathogenicity of the strains. Tests of antimicrobial susceptibity were performed to prescribe with better drugtreatments for kangaroos. Corynebacterium pseudotuberculosis and Yersinia pseudotuberculosis were identified based onmorphology, culture characteristics and biochemical tests. Corynebacterium pseudotuberculosis (G+) in Sucrose, Mannitol,Lactose, Maltose, Glucose tubes were positive, that acids and gases both production, in Gelatin liquefaction, Indol test,MR were positive, that only acids production, others were negative; Yersinia pseudotuberculosis (G-) in Urea, MR werepositive, that only acids production, others were negative.The infected mice presented with gum erosion or ulcers whenthe two pathogens were injected subcutaneous at the oral regional by 2-3 point at 0.2 mL of individual strains 1.0×109CFU/mouse...

Acute death of kangaroos in a zoo due to highly pathogenic Corynebacterium pseudotuberculosis and Yersinia pseudotuberculosis

Background: “Lumpy jaw” is disease effecting wallabies and kangaroos, particularly in Macropus rufus and Macropusgiganteus. In the most serious situations, additional tooth loss and fistulas follow, accompanied by a stench, weight loss,and eventually death due to sepsis or blood poisoning. “Lumpy jaw” disease has seriously affected the normal display andhealth of kangaroos, and cause a huge economic loss. There was an outbreak of jaw infection in kangaroos at the HongshanForest Zoo. Two Macropus giganteus and two Macropus rufus died of “lumpy jaw”. The main objective of the describingcase was to isolate pathogens, provide a basis for follow-up treatment, and serve to establish a disease prevention protocol.Case: Four grown-up kangaroos (two Macropus giganteus and two Macropus rufus) were raised in Hongshan Forest Zoo,which had obviously clinical symptoms, such as oral lesions of pus, necrotic tissue, rotting teeth, then died of “lumpyjaw”. Oral swab samples were collected from the lesion sites of the dying kangaroos. Mice experiments were conducted toexamine the pathogenicity of the strains. Tests of antimicrobial susceptibity were performed to prescribe with better drugtreatments for kangaroos. Corynebacterium pseudotuberculosis and Yersinia pseudotuberculosis were identified based onmorphology, culture characteristics and biochemical tests. Corynebacterium pseudotuberculosis (G+) in Sucrose, Mannitol,Lactose, Maltose, Glucose tubes were positive, that acids and gases both production, in Gelatin liquefaction, Indol test,MR were positive, that only acids production, others were negative; Yersinia pseudotuberculosis (G-) in Urea, MR werepositive, that only acids production, others were negative.The infected mice presented with gum erosion or ulcers whenthe two pathogens were injected subcutaneous at the oral regional by 2-3 point at 0.2 mL of individual strains 1.0×109CFU/mouse...(AU)

Genomic identification and characterization of the elite strains Bradyrhizobium yuanmingense BR 3267 and Bradyrhizobium pachyrhizi BR 3262 recommended for cowpea inoculation in Brazil

The leguminous inoculation with nodule-inducing bacteria that perform biological nitrogen fixation is a good example of an eco-friendly agricultural practice. Bradyrhizobium strains BR 3267 and BR 3262 are recommended for cowpea (Vigna unguiculata) inoculation in Brazil and showed remarkable responses; nevertheless neither strain was characterized at species level, which is our goal in the present work using a polyphasic approach. The strains presented the typical phenotype of Bradyrhizobium with a slow growth and a white colony on yeast extract-mannitol medium. Strain BR 3267 was more versatile in its use of carbon sources compared to BR 3262. The fatty acid composition of BR 3267 was similar to the type strain of Bradyrhizobium yuanmingense; while BR 3262 was similar to Bradyrhizobium elkanii and Bradyrhizobium pachyrhizi. Phylogenetic analyses based on 16S rRNA and three housekeeping genes placed both strains within the genus Bradyrhizobium: strain BR 3267 was closest to B. yuanmingense and BR 3262 to B. pachyrhizi. Genome average nucleotide identity and DNADNA reassociation confirmed the genomic identification of B. yuanmingense BR 3267 and B. pachyrhizi BR 3262. The nodC and nifH gene analyses showed that strains BR 3267 and BR 3262 hold divergent symbiotic genes. In summary, the results indicate that cowpea can establish effective symbiosis with divergent bradyrhizobia isolated from Brazilian soils.(AU)

Polyphasic characterization of bacteria obtained from upland rice cultivated in Cerrado soil

This work aimed to characterize 20 isolates obtained from upland rice plants, based on phenotypic (morphology, enzymatic activity, inorganic phosphate solubilization, carbon source use, antagonism), genotypic assays (16S rRNA sequencing) and plant growth promotion. Results showed a great morphological, metabolic and genetic variability among bacterial isolates. All isolates showed positive activity for catalase and protease enzymes and, 90% of the isolates showed positive activity for amylase, catalase and, nitrogenase. All isolates were able to metabolize sucrose and malic acid in contrast with mannitol, which was metabolized only by one isolate. For the other carbon sources, we observed a great variability in its use by the isolates. Most isolates showed antibiosis against Rhizoctonia solani (75%) and Sclerotinia sclerotiorum (55%) and, 50% of them showed antibiosis against both pathogens. Six isolates showed simultaneous ability of antibiosis, inorganic phosphate solubilization and protease activity. Based on phylogenetic analysis of the 16S rRNA gene all the isolates belong to Bacillus genus. Under greenhouse conditions, two isolates (S4 and S22) improved to about 24%, 25%, 30% and 31% the Total N, leaf area, shoot dry weight and root dry weight, respectively, of rice plants, indicating that they should be tested for this ability under field conditions.(AU)

Systemic toxic reaction due to multiple honeybee stings in equine: Case report / Reação tóxica sistêmica devido a múltiplas ferroadas de abelha em equino: relato de caso

Accidents caused by insects of the Hymenoptera are rarely described in large animals. The attacks caused by honeybee (Apis mellifera) may cause severe consequences and its intensity changes according to the number of stings. Local and systemic reactions can occur, including progression to death. This report describes a case of honeybee attack on an equine, which took place in the city of Lages, in the state of Santa Catarina, Brazil. In the clinical assessment the horse showed apathy, anorexia, head and pectoral edemas, dyspnea, icteric mucosa, increased mandibular lymph nodes and darkened urine. The blood count showed anemia and serum biochemical tests suggested, muscular and hepatic lesions. The urinalysis test indicated hemoglobinuria and increased clotting time. Treatment included lactate Ringer's solution fluid therapy, furosemide, promethazine, corticosteroids and 20% mannitol solution. Hot and cold compresses were applied alternately on areas with edema. There was a satisfactory response to treatment and the animal was discharged after 30 days in veterinary hospital. The description of honeybee sting accidents in large animals is important because of the evolution that can lead to death. The early approach associated with appropriate treatment, avoiding the worsening of the lesions is fundamental for the recovery of the patient.(AU)

Os acidentes causados por insetos da ordem Hymenoptera são raramente descritos em grandes animais. Os ataques provocados por abelhas (Apis mellifera) causam consequências graves, e sua intensidade varia de acordo com a quantidade de ferroadas. Reações locais a sistêmicas podem ocorrer, incluindo a evolução para a morte. Este relato descreve um caso de ataque por abelhas em equino, ocorrido no município de Lages, SC. No exame clínico, o equino apresentava apatia, anorexia, edema de cabeça e região peitoral, dispneia inspiratória, mucosas ictéricas, linfonodos mandibulares aumentados e urina de coloração marrom-escura. O hemograma evidenciou anemia hemolítica, e os exames de bioquímica sérica sugeriram lesão muscular e lesão hepática. A urinálise demonstrou hemoglobinúria, e o tempo de coagulação apresentava-se aumentado. Como tratamento, foram administrados solução de ringer com lactato, furosemida, prometazina, corticosteroides e solução de manitol a 20%. Compressas quentes e frias foram aplicadas alternadamente sobre as áreas de edema. Houve adequada resposta ao tratamento instituído e o animal recebeu alta hospitalar após 30 dias de internamento. A descrição de casos de acidentes por picadas de abelhas em grandes animais é importante devido à evolução, que pode levar à morte. A abordagem precoce associada ao tratamento adequado, evitando o agravamento das lesões, é fundamental para a recuperação do paciente.(AU)

Systemic toxic reaction due to multiple honeybee stings in equine: Case report / Reação tóxica sistêmica devido a múltiplas ferroadas de abelha em equino: relato de caso

Accidents caused by insects of the Hymenoptera are rarely described in large animals. The attacks caused by honeybee (Apis mellifera) may cause severe consequences and its intensity changes according to the number of stings. Local and systemic reactions can occur, including progression to death. This report describes a case of honeybee attack on an equine, which took place in the city of Lages, in the state of Santa Catarina, Brazil. In the clinical assessment the horse showed apathy, anorexia, head and pectoral edemas, dyspnea, icteric mucosa, increased mandibular lymph nodes and darkened urine. The blood count showed anemia and serum biochemical tests suggested, muscular and hepatic lesions. The urinalysis test indicated hemoglobinuria and increased clotting time. Treatment included lactate Ringer's solution fluid therapy, furosemide, promethazine, corticosteroids and 20% mannitol solution. Hot and cold compresses were applied alternately on areas with edema. There was a satisfactory response to treatment and the animal was discharged after 30 days in veterinary hospital. The description of honeybee sting accidents in large animals is important because of the evolution that can lead to death. The early approach associated with appropriate treatment, avoiding the worsening of the lesions is fundamental for the recovery of the patient.(AU)

Os acidentes causados por insetos da ordem Hymenoptera são raramente descritos em grandes animais. Os ataques provocados por abelhas (Apis mellifera) causam consequências graves, e sua intensidade varia de acordo com a quantidade de ferroadas. Reações locais a sistêmicas podem ocorrer, incluindo a evolução para a morte. Este relato descreve um caso de ataque por abelhas em equino, ocorrido no município de Lages, SC. No exame clínico, o equino apresentava apatia, anorexia, edema de cabeça e região peitoral, dispneia inspiratória, mucosas ictéricas, linfonodos mandibulares aumentados e urina de coloração marrom-escura. O hemograma evidenciou anemia hemolítica, e os exames de bioquímica sérica sugeriram lesão muscular e lesão hepática. A urinálise demonstrou hemoglobinúria, e o tempo de coagulação apresentava-se aumentado. Como tratamento, foram administrados solução de ringer com lactato, furosemida, prometazina, corticosteroides e solução de manitol a 20%. Compressas quentes e frias foram aplicadas alternadamente sobre as áreas de edema. Houve adequada resposta ao tratamento instituído e o animal recebeu alta hospitalar após 30 dias de internamento. A descrição de casos de acidentes por picadas de abelhas em grandes animais é importante devido à evolução, que pode levar à morte. A abordagem precoce associada ao tratamento adequado, evitando o agravamento das lesões, é fundamental para a recuperação do paciente.(AU)

Oral microbiota in healthy Bothrops atrox (Serpentes: Viperidae) and in snakes with stomatitis

The purpose of this study was to isolate bacteria found in the oral cavity of healthy Bothrops atrox and in snakes with stomatitis. The area around the snake fang sheaths were swabbed and the samples were placed in Stuart transport medium, and then seeded on blood agar and XLD agar. Gram staining and catalase and mannitol tests were performed to identify Gram positive bacteria, while biochemical screening with Rugai-lysine medium was used to identify Gram negative bacteria. Proteus spp. (37.5%), Escherichia coli (25%), Citrobacter spp. (18.76%), Serratia spp. (9.37%) and Enterobacter spp. (9.37%) were isolated from healthy snakes, while Escherichia coli (26.31%), Citrobacter spp. (21.05%), Proteus spp. (15.78%), Salmonella (10.52%), and Staphylococcus spp. (26.31 %) were isolated from snakes with stomatitis. Staphylococcus spp. in healthy snakes and in animals with stomatitis differed significantly, suggesting that this microorganism is associated with cases of stomatitis in Bothrops atrox.