PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

ABSTRACT.- Belo Reis A.S., Duarte M.D., Sousa M.G.S., Freitas N.F.Q.R., Yamasaki E.M., Silva A.G.M., Oliveira C.M.C. & Barbosa J.D. 2011. [Traumatic skin injuries caused by the thorns of Mimosa pudica and Mimosa debilis in Equidae.] Lesões traumáticas de pele causadas pelos espinhos de Mimosa pudica e Mimosa debilis em equídeos. Pesquisa Veterinária Brasileira 31(9):768-772. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: alessandra.belo.reis@gmail.com Studies on the nature and cause of skin lesions in horses on a farm in the county of Castanhal, northeastern Para, Brazil were conducted. These were visits to the farm, epidemiological studies, blood sample collections, skin biopsies, and inspection of the pasture. The study included 25 Equidae, 14 males and 11 females, six months to eight years old. The animals showed ulcerative lesions of irregular borders on the head (nose, muzzle, upper and lower lips), in the oral cavity (buccal vestibule and gum) and on the limbs (billets, metacarpals and metatarsals and scapular-humeral joint). The histopathological examination revealed foci of cutaneous erosions with epidermal necrosis, spongiosis and vesicular degeneration of the remaining epidermis, and mild inflammatory infiltrate in the underlying dermis, consisting predominantly of macrophages and, to a lesser degree, eosinophils. The inspection of the pasture, which consisted of Brachiaria humidicola, revealed a heavy invasion by two plants provided with spines, Mimosa pudica and Mimosa debilis, of the Leguminosae Mimosoideae family. It was concluded that the skin lesions were caused by traumatic action of the spines of Mimosa pudica and Mimosa debilis.

• Traumatizing plants skin lesions Mimosa pudica Mimosa debilis plantas traumatizantes lesões de pele

Abstract in Portuguese:

RESUMO.- Belo Reis A.S., Duarte M.D., Sousa M.G.S., Freitas N.F.Q.R., Yamasaki E.M., Silva A.G.M., Oliveira C.M.C. & Barbosa J.D. 2011. [Traumatic skin injuries caused by the thorns of Mimosa pudica and Mimosa debilis in Equidae.] Lesões traumáticas de pele causadas pelos espinhos de Mimosa pudica e Mimosa debilis em equídeos. Pesquisa Veterinária Brasileira 31(9):768-772. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: alessandra.belo.reis@gmail.com Foram realizadas pesquisas sobre a natureza e causa de lesões de pele em equídeos em uma propriedade no município de Castanhal, região Nordeste do Estado do Pará. Foram realizadas visitas técnicas, estudos epidemiológicos, coletas de sangue, biópsias de pele afetada e a inspeção da pastagem. O estudo incluiu 25 equídeos, dos quais 14 machos e 11 fêmeas, de seis meses e oito anos de idade. Os animais apresentaram lesões ulcerativas, de bordos irregulares, na cabeça (narinas, focinho, lábios superiores e inferiores e chanfro), na cavidade oral (vestíbulo bucal e gengiva) e nos membros (boletos, metacarpos e metatarsos e articulação escápulo-umeral). No exame histopatológico foram observados focos de erosões cutâneas, caracterizados por perda e necrose da epiderme, com espongiose, degeneração vesicular da epiderme remanescente e leve infiltrado inflamatório na derme subjacente, constituído predominantemente por macrófagos e, em menor grau, eosinófilos. Na inspeção da pastagem, constituída de Brachiaria humidicola, foi constatada grande invasão de duas plantas providas de espinhos, Mimosa pudica e Mimosa debilis, ambas da família Leg. Mimosoideae. Concluiu-se, que as lesões de pele foram causadas pela ação traumática dos espinhos de Mimosa pudica e Mimosa debilis.

Abstract in English:

ABSTRACT.- Barbosa J.D., Albernaz T.T., Oliveira C.M.C., Duarte M.D., Oliveira C.H.S., Brito M.F. & Silva A.G.M. 2011. [Allergic dermatitis to insect bites in sheep in the state of Pará.] Dermatite alérgica à picada de insetos em ovinos no estado do Pará. Pesquisa Veterinária Brasileira 31(2):117-120. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: diomedes@ufpa.br A skin disease was studied in 159 sheep on 15 farms located in seven counties of northeastern and southeastern of the state of Pará and in one farm in the state of Roraima, Brazil. The disease affected mainly two to four year-old sheep of the Santa Ines breed and crossbreds. Clinical signs were characterized by alopecia, multifocal erythematic, small papules, and crusts in several areas of the body, mainly around the eyes. Severe itching in the affected areas, restless, weight loss and lacrimation were also observed. Insects were always seen around the animals. Insects apparently associated with the lesions were captured and identified as pertaining to the genera Simulium and Hippelates. Biopsies of the skin lesions of 10 sheep revealed inflammatory non suppurative mononuclear infiltrates of the dermis with presence of eosinophils. The epidemiologic, clinical and pathological studies of the cases allowed the diagnosis of allergic dermatitis due to the insect bites.

• Dermatitis insect bites Simulium Hippelates dermatite alérgica picada de insetos

Abstract in Portuguese:

RESUMO.- Barbosa J.D., Albernaz T.T., Oliveira C.M.C., Duarte M.D., Oliveira C.H.S., Brito M.F. & Silva A.G.M. 2011. [Allergic dermatitis to insect bites in sheep in the state of Pará.] Dermatite alérgica à picada de insetos em ovinos no estado do Pará. Pesquisa Veterinária Brasileira 31(2):117-120. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: diomedes@ufpa.br Foi estudada uma doença em 159 ovinos em 15 propriedades localizadas em sete municípios das mesorregiões nordeste e sudeste do estado do Pará e uma em um município do estado de Roraima. Os ovinos da raça Santa Inês e seus mestiços, de ambos os sexos e com dois a quatro anos de idade, eram os mais acometidos. A doença caracterizava-se por alopecia em diversas regiões do corpo, principalmente ao redor dos olhos; essas lesões evoluíam para eritemas multifocais, pequenas pápulas e crostas. Os animais apresentavam prurido intenso no local das lesões, inquietação, perda de peso e corrimento ocular. Sempre era observada a presença de mosquitos ao redor dos animais. Com o auxílio de um puçá foi realizada a captura de insetos associados às lesões, durante o repasto nos ovinos, para a identificação. Foram identificados insetos dos gêneros Simulium e Hippelates. Realizou-se biópsia da pele lesada de 10 ovinos. As lesões histológicas se caracterizaram por leves infiltrados inflamatórios mononucleares na derme, com presença de eosinófilos. Os estudos epidemiológicos, clínicos e patológicos desses casos, bem como o descarte dos diagnósticos diferenciais, permitiram concluir que se trata de dermatite alérgica por picada de insetos.

Abstract in English:

ABSTRACT.- Albernaz T.T., Silveira J.A.S., Silva N.S., Oliveira C.H.S., Belo Reis A.S., Oliveira C.M.C., Duarte M.D. & Barbosa J.D. 2010. [Photosensitization of sheep kept on Brachiaria brizantha pasture in the state of Pará.] Fotossensibilização em ovinos associada à ingestão de Brachiaria brizantha no estado do Pará. Pesquisa Veterinária Brasileira 30(9): 741-748. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Campus de Castanhal, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: tatyalbernaz@ufpa.br Two outbreaks of photosensitization by Brachiaria brizantha were studied and an experiment was performed in Santa Inês and Dorper crossbred sheep, two to three months old, on a farm in Santa Luzia do Pará municipality. These animals were kept from birth until about two months of age in a suspended stall floor, fed purple elephant grass (Pennisetum purpureum cv. purple), and had minerals and water ad libitum. After this period they were placed into a paddock of B. brizantha. At the time of the outbreaks and the experimental studies, the farm was visited for epidemiological assessment and clinical examination of the sheep, collection of blood samples for measurement of gamma glutamyltransferase, aspartate aminotransferase, conjugated bilirubin, unconjugated bilirubin, urea, and creatinine. Pasture samples were collected for saponin determination and count of Pithomyces chartarum spores. Necropsies with collection of material for histopathological studies were performed. Outbreak 1 occurred at the time of low rainfall, when the grass was scarce and mature, and morbidity and lethality was 43.4% and 81.6%, respectively. Outbreak 2 occurred at the beginning of the rainy season, with morbidity and lethality rates of 16.3% and 76.9%, respectively. From the 50 animals in the experiment, 10 received three times 200ml of rumen fluid taken from mother sheep of the same batch. The first of these administrations was given one day before the sheep were introduced into the pasture and the other two at weekly intervals. After 15 days in the pasture, the animals were unquiet, looked for shade, had edema of the ears, yellowish mucosae, were apathic, had anorexia and showed sloughing of the skin followed by crusting in some areas of the body. Both, the sheep of the outbreaks as those from the experiment, showed increased levels of GGT, AST, BD, BI, BT, urea and creatinine. In sheep which received ruminal fluid the values of urea and GGT were similar to those which did not receive the ruminal fluid. The creatinine, AST and bilirrubine values were lower in sheep that received the ruminal fluid. Two types of saponins, methylprotodioscin and protodioscin, were detected in the samples of B. brizantha from the outbreaks and the experiment. The level of saponins in Outbreak 1 and 2 was 0.92% and 0.88% respectively. The levels of saponins in the experiment ranged from 1.13% to 1.62%. The numbers of spores of Pithomyces chartarum in both outbreaks and in the experiment were negligible. At necropsy there was widespread jaundice, the liver was brown-yellow with marked lobular pattern and increased consistency and the kidneys were enlarged yellowish-green. Histological changes occurred mainly in the liver and consisted of mild proliferation of bile ducts in portal tracts, presence of binucleate hepatocytes, foamy macrophages, necrosis of isolated hepatocytes, cholangitis, presence of crystals in hepatocytes and macrophages.

• Photosensitization Brachiaria brizantha saponins fotossensibilização saponinas

Abstract in Portuguese:

RESUMO.- Albernaz T.T., Silveira J.A.S., Silva N.S., Oliveira C.H.S., Belo Reis A.S., Oliveira C.M.C., Duarte M.D. & Barbosa J.D. 2010. [Photosensitization of sheep kept on Brachiaria brizantha pasture in the state of Pará.] Fotossensibilização em ovinos associada à ingestão de Brachiaria brizantha no estado do Pará. Pesquisa Veterinária Brasileira 30(9): 741-748. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Campus de Castanhal, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: tatyalbernaz@ufpa.br Foram estudados dois surtos e realizado um experimento de fotossensibilização associada à ingestão por Brachiaria brizantha em ovinos mestiços de Santa Inês e Dorper, com idade variando de dois a três meses, em uma fazenda no município de Santa Luzia do Pará. Esses animais foram mantidos desde o nascimento até aproximadamente dois meses de idade, em apriscos suspensos do chão, recebendo capim-elefante roxo (Pennisetum purpureum cv. roxo), concentrado, sal mineral e água ad libitum. Após esse período foram introduzidos em um piquete de B. brizantha. Na ocasião dos surtos e do experimento a fazenda foi visitada para observação dos dados epidemiológicos, avaliação clínica dos animais, colheita de amostras de sangue para dosagem de GGT, AST, BD, BI, BT, ureia e creatinina e colheita de pastagem para pesquisa de Pithomyces chartarum e saponinas. Também foi realizada necropsia com colheita de material para estudo histológico. O surto 01 ocorreu na época de escassez de chuva, com taxa de morbidade e letalidade de 43,4% e 81,6%, respectivamente. O surto 02 aconteceu no início da época chuvosa, com taxas de morbidade e letalidade de 16,3% e 76,9%, respectivamente. Em ambos os surtos o capim encontrava-se com massa residual reduzida e senescente. Dos 50 animais do experimento, 10 receberam 200ml de fluido ruminal retirado de ovelhas mães do mesmo lote, a primeira administração foi feita um dia antes da introdução desses animais na pastagem, e mais duas subsequentes com intervalo de uma semana. Após 15 dias de pastejo, os animais começaram a apresentar inquietação, procura por sombra, edema nas orelhas, mucosas amareladas, apatia, anorexia e desprendimento da pele seguido por formação de crostas em algumas áreas do corpo. Tanto os animais dos surtos quanto do experimento apresentaram aumento nos níveis de GGT, AST, BD, BI, BT, ureia e creatinina. Os valores de ureia e GGT dos animais que receberam fluido ruminal e dos que não receberam foram semelhantes, já os valores de creatinina, AST e bilirrubinas foram menores nos animais que receberam fluido ruminal em comparação aos que não receberam. Foram determinados dois tipos de saponinas nas amostras de B. brizantha dos surtos e do experimento, a metilprotodioscina e a protodioscina. O nível de saponina no surto 01 e 02 foi 0,92% e 0,88%, respectivamente. Os níveis de saponinas no experimento variaram de 1,13% a 1,62%. A quantidade de Pithomyces chartarum, tanto nos surtos quanto no experimento, foi insignificante. Na necropsia foi verificada icterícia generalizada, fígado com consistência aumentada de coloração amarelada e com padrão lobular acentuado. Nos rins foi observada coloração amarelo-esverdeado e aumento de tamanho. As alterações histológicas ocorreram principalmente no fígado e consistiram de leve proliferação das vias biliares nos espaços porta, presença de hepatócitos binucleados, presença de macrófagos espumosos, necrose incipiente de hepatócitos isolados, colangite, presença de cristais em macrófagos e hepatócitos.

Abstract in English:

ABSTRACT.- Silveira J.A.S., Albernaz T.T., Oliveira C.M.C., Duarte M.D. & Barbosa J.D. 2009. [Foot disorders in cows from basin milk of Rondon do Pará.] Afecções podais em vacas da bacia leiteira de Rondon do Pará. Pesquisa Veterinária Brasileira 29(11):905-909. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: jalcides@ufpa.br Foot diseases are some of the main causes of low performance in dairy cows. In order to determine the prevalence, clinical classification and to establish the epidemio-logical factors of foot diseases in cows from basin milk of Rondon do Pará, 1,236 cows were evaluated and 275 had at least one type of foot injury. A total of 655 lesions was showed which a prevalence of 22.25%. Most frequent lesions were interdigital hyperplasia (80.92%), claw overgrowth (6.42%), and interdigital necrobacillosis (6.11%). Hind limbs were most frequently affected (61.83%), and lesions affecting the interdigital space were the most common in both the thoracic (36.34%) and hind limbs (48.09%). Epidemiological study showed that the environmental characteristics such as mountainous areas, newly formed grassland (with trunks and branches of trees), irregular ground, and mud and gravel in the floor of the pens may promote the development of foot lesions. In 95.5% of the farms, no measures had been taken for the control and prophylaxis of foot diseases. The specific clinical examination of the feet was efficient for the diagnosis.

• Afecções podais

Abstract in Portuguese:

RESUMO.- Silveira J.A.S., Albernaz T.T., Oliveira C.M.C., Duarte M.D. & Barbosa J.D. 2009. [Foot disorders in cows from basin milk of Rondon do Pará.] Afecções podais em vacas da bacia leiteira de Rondon do Pará. Pesquisa Veterinária Brasileira 29(11):905-909. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: jalcides@ufpa.br As doenças digitais estão entre as principais causas de performance reduzida de rebanhos leiteiros. Com o objetivo de determinar a prevalência, classificar clinicamente e estabelecer os fatores epidemiológicos das enfermidades podais em vacas da bacia leiteira de Rondon do Pará, foram avaliadas 1.236 vacas, das quais 275 apresentaram pelo menos um tipo de lesão podal. Identificou-se 655 lesões, o que resultou em uma prevalência de 22,25%. As enfermidades mais frequentes foram hiperplasia interdigital (80,92%), necrobacilose interdigital (6,11%) e cascos com crescimento excessivo (6,42%). Os membros pélvicos foram os mais acometidos (61,83%) e o espaço interdigital, tanto nos membros torácicos (36,34%), quanto nos pélvicos (48,09%), a região digital acometida com maior frequência. O estudo epidemiológico mostrou que características ambientais tais como relevo montanhoso, pastagem em formação com presença de troncos e galhos de árvores, irregularidades nos pisos dos currais, presença de piçarra e lama podem favorecer o aparecimento das lesões podais. Constatou-se a ausência de medidas de controle e profilaxia de afecções que acometem os cascos em 95,5% das propriedades estudadas. O exame clínico específico do casco foi eficiente no diagnóstico das enfermidades.

Abstract in English:

ABSTRACT.- Oliveira C.A., Barbosa J.D., Duarte M.D., Cerqueira V.D., Riet-Correa F. & Riet-Correa G. 2009. [Poisoning by Ipomoea carnea subsp. fistulosa in goats in Island of Marajó, Pará.] Intoxicação por Ipomoea carnea subsp. fistulosa (Convolvulaceae) em caprinos na Ilha do Marajó, Pará. Pesquisa Veterinária Brasileira 29(7):583-588. Central de Diagnóstico Veterinário, Campus de Castanhal, Universidade Federal do Pará, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: griet@ufpa.br Ipomoea carnea subsp. fistulosa is a swainsonine-containing plant causing a glycoprotein storage diseases in ruminants, mainly in goats in northeastern Brazil. Seven farms were visited on the Marajo Island, state of Pará, northern Brazil, six in the municipality of Cachoeira do Arari and one in the municipality of Soure. In all farms native pastures had shortage of forage and were largely invaded by I. carnea subsp. fistulosa. On the three farms goats presented difficulties in standing, ataxia, hypermetria, wide-based stance, lateral gait, intention tremors, spastic paresis or weakness, abnormal postural reactions, nystagmus, loss of equilibrium and falling to the side or backward. On two farms the prevalence was of 32% (23/71) and 100% (32/32). On another farm one goat out of 19 had severe clinical signs, but the others of the flock were not examined clinically. Cattle, sheep and buffaloes were not affected. Six goats were euthanized and necropsied. No gross lesions were observed. Upon histological examination the main lesion was the vacuolization of the perikaryon of neurons and cytoplasm of epithelial cells of thyroid, liver, kidney, pancreas and macrophages of different organs. In the central nervous system the vacuolization of the perikaria was more sever in Purkinje cells of the cerebellum and in nuclei of the brain stem, mainly the cerebellar nuclei. Wallerian degeneration of axons and gliosis was also observed. The high frequency of the disease on the three farms suggests that poisoning by I. carnea subsp. fistulosa is very important for goats on Marajó Island where there are large amounts of the plant in the pastures.

• Poisonous plants Ipomoea carnea plant poisoning goats swaisonine diseases of nervous system

Abstract in Portuguese:

ABSTRACT.- Oliveira C.A., Barbosa J.D., Duarte M.D., Cerqueira V.D., Riet-Correa F. & Riet-Correa G. 2009. [Poisoning by Ipomoea carnea subsp. fistulosa in goats in Island of Marajó, Pará.] Intoxicação por Ipomoea carnea subsp. fistulosa (Convolvulaceae) em caprinos na Ilha do Marajó, Pará. Pesquisa Veterinária Brasileira 29(7):583-588. Central de Diagnóstico Veterinário, Campus de Castanhal, Universidade Federal do Pará, Rua Maximino Porpino da Silva 1000, Pirapora, Castanhal, PA 68743-080, Brazil. E-mail: griet@ufpa.br Ipomoea carnea subsp. fistulosa is a swainsonine-containing plant causing a glycoprotein storage diseases in ruminants, mainly in goats in northeastern Brazil. Seven farms were visited on the Marajo Island, state of Pará, northern Brazil, six in the municipality of Cachoeira do Arari and one in the municipality of Soure. In all farms native pastures had shortage of forage and were largely invaded by I. carnea subsp. fistulosa. On the three farms goats presented difficulties in standing, ataxia, hypermetria, wide-based stance, lateral gait, intention tremors, spastic paresis or weakness, abnormal postural reactions, nystagmus, loss of equilibrium and falling to the side or backward. On two farms the prevalence was of 32% (23/71) and 100% (32/32). On another farm one goat out of 19 had severe clinical signs, but the others of the flock were not examined clinically. Cattle, sheep and buffaloes were not affected. Six goats were euthanized and necropsied. No gross lesions were observed. Upon histological examination the main lesion was the vacuolization of the perikaryon of neurons and cytoplasm of epithelial cells of thyroid, liver, kidney, pancreas and macrophages of different organs. In the central nervous system the vacuolization of the perikaria was more sever in Purkinje cells of the cerebellum and in nuclei of the brain stem, mainly the cerebellar nuclei. Wallerian degeneration of axons and gliosis was also observed. The high frequency of the disease on the three farms suggests that poisoning by I. carnea subsp. fistulosa is very important for goats on Marajó Island where there are large amounts of the plant in the pastures.

Abstract in English:

ABSTRACT.- Barbosa J.D., Junior J.M.A., Pinheiro C.P., Oliveira C.H.S., Oliveira C.M.C., Sousa M.G.S. & Duarte M.D. 2009. [Acumulation of the seeds of Acrocomia aculeata (Arecaceae) in the cheeks of buffaloes in the State of Pará, Brazil.] Acúmulo de sementes de Acrocomia aculeata (Arecaceae) na bochecha de búfalos no Pará. Pesquisa Veterinária Brasileira 29(5):431-434. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br A condition of buffaloes characterized by an increased volume of one of the cheeks was shown to be due to accumulation of the seeds of the palm-tree “mucaja” (Acrocomia aculeata) and of grass, in the oral vestibulum during rumination. This caused compressive atrophy with thinning and medial deviation of the corresponding submaxillary bone and exposition of the roots of molar teeth. The seeds appear to be of good palatability to the buffaloes.

• Acrocomia aculeata Arecaceae diseases of buffaloes doenças de búfalos

Abstract in Portuguese:

ABSTRACT.- Barbosa J.D., Junior J.M.A., Pinheiro C.P., Oliveira C.H.S., Oliveira C.M.C., Sousa M.G.S. & Duarte M.D. 2009. [Acumulation of the seeds of Acrocomia aculeata (Arecaceae) in the cheeks of buffaloes in the State of Pará, Brazil.] Acúmulo de sementes de Acrocomia aculeata (Arecaceae) na bochecha de búfalos no Pará. Pesquisa Veterinária Brasileira 29(5):431-434. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br A condition of buffaloes characterized by an increased volume of one of the cheeks was shown to be due to accumulation of the seeds of the palm-tree “mucaja” (Acrocomia aculeata) and of grass, in the oral vestibulum during rumination. This caused compressive atrophy with thinning and medial deviation of the corresponding submaxillary bone and exposition of the roots of molar teeth. The seeds appear to be of good palatability to the buffaloes.

Abstract in English:

ABSTRACT.- Barbosa J.D., Silveira J.A.S, Albernaz T.T., Silva N.S., Belo Reis A.S., Oliveira C.M.C., Riet- Correa G. & Duarte M.D. 2009 [Cutaneous lesions of the legs caused by the thorns of Mimosa pudica (Leg. Mimosoideae) in cattle and sheep in the State of Pará.] Lesões de pele causadas por Mimosa pudica (Leg. Mimosoideae) nos membros de bovinos e ovinos no Estado do Pará. Pesquisa Veterinária Brasileira 29(5):435-438. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br A condition of cattle and sheep characterized by ulcerous and granulomatous skin lesions of the legs was studied. Epidemiological data and the nature of the lesions indicate that they are caused by the thorns of Mimosa pudica (Leg. Mimosoideae). The disease was observed only in pastures largely infested by the plant, and animals recover quickly when moved from them.

• Mimosa pudica Leguminosae Mimosoideae traumatic lesions malícia lesões traumáticas

Abstract in Portuguese:

ABSTRACT.- Barbosa J.D., Silveira J.A.S, Albernaz T.T., Silva N.S., Belo Reis A.S., Oliveira C.M.C., Riet- Correa G. & Duarte M.D. 2009 [Cutaneous lesions of the legs caused by the thorns of Mimosa pudica (Leg. Mimosoideae) in cattle and sheep in the State of Pará.] Lesões de pele causadas por Mimosa pudica (Leg. Mimosoideae) nos membros de bovinos e ovinos no Estado do Pará. Pesquisa Veterinária Brasileira 29(5):435-438. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br A condition of cattle and sheep characterized by ulcerous and granulomatous skin lesions of the legs was studied. Epidemiological data and the nature of the lesions indicate that they are caused by the thorns of Mimosa pudica (Leg. Mimosoideae). The disease was observed only in pastures largely infested by the plant, and animals recover quickly when moved from them.

Abstract in English:

ABSTRACT.- Barbosa J.D., Albernaz T.T., Riet-Correa G, Cerqueira V.D., Soares S.O., Campos K.F., Oliveira C.M.C. & Duarte M.D. 2009. [Angular cheilitis in horses associated with ingestion of Panicum maximum.] Queilite angular traumática em eqüinos associada à ingestão de Panicum maximum. Pesquisa Veterinária Brasileira 29(5):428-430. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br A condition with enlargement of the oral cleft in horses was studied. The enlargement of varied extension was uni or bilateral. The cheek mucosa of the labial commissure showed slight erosions. During chewing there was loss of small amounts of grass and saliva through the oral cleft. The affected horses were in good nutritional condition. Histopathological studies of tissues obtained by biopsia, revealed a superficial epidermitis. The pastures consisted of Panicum maximum grass (varieties Tanzânia, Mombaça, Tobiatã and Colonião) which was mature, tall, lignified, with leaves of cutting edges. Based on epidemiological, clinical and histopathological data, it was concluded that the lesions were caused by the hard grass, favored by the way horses pull the tall grass and chew it.

• Cheilitis Panicum maximum diseases of horses

Abstract in Portuguese:

ABSTRACT.- Barbosa J.D., Albernaz T.T., Riet-Correa G, Cerqueira V.D., Soares S.O., Campos K.F., Oliveira C.M.C. & Duarte M.D. 2009. [Angular cheilitis in horses associated with ingestion of Panicum maximum.] Queilite angular traumática em eqüinos associada à ingestão de Panicum maximum. Pesquisa Veterinária Brasileira 29(5):428-430. Central de Diagnóstico Veterinário, Faculdade de Medicina Veterinária, Universidade Federal do Pará, Campus Castanhal, Rua Maximino Porpino da Silva 1000, Castanhal, PA 68740-080, Brazil. E-mail: diomedes@ufpa.br A condition with enlargement of the oral cleft in horses was studied. The enlargement of varied extension was uni or bilateral. The cheek mucosa of the labial commissure showed slight erosions. During chewing there was loss of small amounts of grass and saliva through the oral cleft. The affected horses were in good nutritional condition. Histopathological studies of tissues obtained by biopsia, revealed a superficial epidermitis. The pastures consisted of Panicum maximum grass (varieties Tanzânia, Mombaça, Tobiatã and Colonião) which was mature, tall, lignified, with leaves of cutting edges. Based on epidemiological, clinical and histopathological data, it was concluded that the lesions were caused by the hard grass, favored by the way horses pull the tall grass and chew it.

Abstract in English:

ABSTRACT.- Barbosa J.D., Duarte M.D., Oliveira C.M.C., Reis A.B., Peixoto T.C., Brito M.F. & Peixoto P.V. 2009. [Perineal squamous cell carcinoma in goats in the State of Pará, Brazil.] Carcinoma de células escamosas perineal em cabras no Pará. Pesquisa Veterinária Brasileira 29(5):421-427. Escola de Medicina Veterinária, Campus Castanhal, Universidade Federal do Pará (UFPA), Castanhal, PA 68743-080, Brazil. E-mail: diomedes@ufpa.br Squamous cell carcinoma in goats of two farmers in the State of Pará is described. Prevalence, correlation with the pigmentation of the perineal area and macro and microscopic characteristics of the lesions were studied. The tumors on the perineum were of varied development degrees, diameters and forms. On one farm, in the county of Viseu, from a total of 347 goats, 20 presented the neoplasia (5.8%). On the second farm, in the county of Garrafão do Norte, three cases of squamous cell carcinoma in a herd of 400 goats (0.75 %) were observed. The tumor was only observed in animals in which the perineal area was despigmented. The high incidence of this tumor appears to be due, to lack of pigmentation at the períneo and the high and short tail of the goats, that exposes the area to intense of ultraviolet radiation in the tropics.

• Squamous cell carcinoma carcinoma epidermóide

Abstract in Portuguese:

ABSTRACT.- Barbosa J.D., Duarte M.D., Oliveira C.M.C., Reis A.B., Peixoto T.C., Brito M.F. & Peixoto P.V. 2009. [Perineal squamous cell carcinoma in goats in the State of Pará, Brazil.] Carcinoma de células escamosas perineal em cabras no Pará. Pesquisa Veterinária Brasileira 29(5):421-427. Escola de Medicina Veterinária, Campus Castanhal, Universidade Federal do Pará (UFPA), Castanhal, PA 68743-080, Brazil. E-mail: diomedes@ufpa.br Squamous cell carcinoma in goats of two farmers in the State of Pará is described. Prevalence, correlation with the pigmentation of the perineal area and macro and microscopic characteristics of the lesions were studied. The tumors on the perineum were of varied development degrees, diameters and forms. On one farm, in the county of Viseu, from a total of 347 goats, 20 presented the neoplasia (5.8%). On the second farm, in the county of Garrafão do Norte, three cases of squamous cell carcinoma in a herd of 400 goats (0.75 %) were observed. The tumor was only observed in animals in which the perineal area was despigmented. The high incidence of this tumor appears to be due, to lack of pigmentation at the períneo and the high and short tail of the goats, that exposes the area to intense of ultraviolet radiation in the tropics.

Abstract in English:

Riet-Correa G., Duarte M.D., Barbosa J.D., Oliveira C.M.C., Cerqueira V.D., Brito M.F. & Riet-Correa F. 2006. [Meningoencephalitis and polioencephalomalacia caused by Bovine herpesvirus-5 in the state of Pará, northern Brazil.] Meningoencefalite e polioencefalomalacia causadas por Herpesvírus bovino-5 no Estado do Pará. Pesquisa Veterinária Brasileira 26(1):44-46. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Maximino Porpino 1000, Castanhal, PA 68740-080, Brazil. E-mail: griet@ufpa.br Four outbreaks of meningoencephalitis in 1 to 2 years old cattle caused by Bovine herpesvirus-5 are reported in four municipalities in the state of Pará, northern Brazil. In three outbreaks only one animal was affected, in another 3 cattle were affected. Main clinical signs were incoordination, dullness, blindness, recumbence, and opisthotonus. Death occurred after a clinical manifestation period of 3-4 days. Softening and yellowish areas were observed grossly in the cerebral cortex. The histology revealed poliencephalomalacia in the cerebral cortex, thalamus and basal nuclei, and non suppurative encephalitis and meningitis, and eosinophilic intranuclear inclusion bodies in astrocytes. The diagnosis was based on the typical microscopic lesions.

• Meningoencephalitis polioencephalomalacia bovine herpesvirus-5 cattle.

Abstract in Portuguese:

Riet-Correa G., Duarte M.D., Barbosa J.D., Oliveira C.M.C., Cerqueira V.D., Brito M.F. & Riet-Correa F. 2006. [Meningoencephalitis and polioencephalomalacia caused by Bovine herpesvirus-5 in the state of Pará, northern Brazil.] Meningoencefalite e polioencefalomalacia causadas por Herpesvírus bovino-5 no Estado do Pará. Pesquisa Veterinária Brasileira 26(1):44-46. Central de Diagnóstico Veterinário, Universidade Federal do Pará, Maximino Porpino 1000, Castanhal, PA 68740-080, Brazil. E-mail: griet@ufpa.br Four outbreaks of meningoencephalitis in 1 to 2 years old cattle caused by Bovine herpesvirus-5 are reported in four municipalities in the state of Pará, northern Brazil. In three outbreaks only one animal was affected, in another 3 cattle were affected. Main clinical signs were incoordination, dullness, blindness, recumbence, and opisthotonus. Death occurred after a clinical manifestation period of 3-4 days. Softening and yellowish areas were observed grossly in the cerebral cortex. The histology revealed poliencephalomalacia in the cerebral cortex, thalamus and basal nuclei, and non suppurative encephalitis and meningitis, and eosinophilic intranuclear inclusion bodies in astrocytes. The diagnosis was based on the typical microscopic lesions.