18 research outputs found

    Survey of diseases affecting reproduction in freeze bovine semen using the polymerase chain reaction (PCR)

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    Las enfermedades reproductivas son una de las principales causas de los bajos índices de procreo en Uruguay. El diagnóstico de estas enfermedades se lleva a cabo por diversas técnicas de laboratorio; la mayoría de las cuales no permiten la diferenciación de las distintas subespecies de cada microorganismo, hecho que si se puede determinar por medio de la técnica de PCR. En este estudio se intentó determinar la presencia de genomas de: Diarrea Viral Bovina, Herpesvirus bovino tipos 1 y 5, Campylobacter fetus fetus y fetus veneralis y Tritrichomonas foetus foetus. Para ello, 100 pajuelas de semen de bovinos de distintas razas fueron procesadas mediante PCR utilizando “primers” específicos para cada una de las enfermedades en estudio. Todas las muestras analizadas resultaron negativas a la detección de genomas de los agentes mencionados. Esta investigación permitió comprobar el buen nivel de los centros de reproducción evaluados, repercutiendo favorablemente en la sanidad del rodeo nacional. Así mismo, el chequeo de pajuelas de semen por medio de la técnica de PCR demostró ser una herramienta necesaria que debería ser utilizada de rutina ya que permite un rápido y eficiente diagnóstico.Reproductive diseases are a major cause of low calving rates nationwide. The diagnosis of these diseases is performed by various laboratory techniques, most of them do not allow differentiation in different subspecies of each organism, a fact that it can be determined by PCR. This study attempted to determine the presence of genome of bovine viral diarrhea, bovine herpesvirus types 1 and 5, Campylobacter fetus fetus and fetus veneralis and Tritrichomonas foetus foetus. One hundred bovine semen straws were collected and PCR technique using specific primers for each of the diseases studied were applied. All samples were negative for the detection of genomes of the pathogens mentioned. This investigation allowed to check the proper level of insemmination centers evaluated, impacting positively on the health of the national herd. Likewise, the screening of bovine semen straws by PCR proved to be a necessary tool that would be used routinously for quick and efficient diagnosis.Facultad de Ciencias Veterinaria

    Prevalence of antibodies against some abortifacient infections of dairy cattle in Uruguay

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    Se analizaron anticuerpos contra el virus de la diarrea viral bovina y de la rinotraqueitis infecciosa bovina, Neospora caninum y Chlamydophila abortus, en vacunos de 9 tambos del Departamento de San José, Uruguay, mediante equipos comerciales de ELISA. La prevalencia de anticuerpos específicos fue de 76 y 65,3 % para 1080 sueros examinados para las infecciones virales respectivamente, 29,3% para neosporosis, y 10,22 % para 420 sueros examinados para clamidiosis. La comparación de las prevalencias de la infección a N. caninum entre las terneras y las vacas, permitió asumir que la principal vía de infección en este caso, fue la vertical.Sera from milking cows from 9 dairy farms from the county of San José, Uruguay, were tested with a commercial ELISA test for determination of antibodies against bovine viral diarrhea, bovine rhinotracheitis, neosporosis and chlamydiosis. The prevalence of specific antibodies was 76 and 65,3 % for 1080 sera examined for the viral infections respectively, 29.3% for neosporosis and 10.23% for 420 sera examined for chlamydiosis. Comparison of the prevalence of Neospora infection between heifers and cows, allowed to assume that the main route of transmission was vertical.Facultad de Ciencias Veterinaria

    Prevalence of antibodies against some abortifacient infections of dairy cattle in Uruguay

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    Se analizaron anticuerpos contra el virus de la diarrea viral bovina y de la rinotraqueitis infecciosa bovina, Neospora caninum y Chlamydophila abortus, en vacunos de 9 tambos del Departamento de San José, Uruguay, mediante equipos comerciales de ELISA. La prevalencia de anticuerpos específicos fue de 76 y 65,3 % para 1080 sueros examinados para las infecciones virales respectivamente, 29,3% para neosporosis, y 10,22 % para 420 sueros examinados para clamidiosis. La comparación de las prevalencias de la infección a N. caninum entre las terneras y las vacas, permitió asumir que la principal vía de infección en este caso, fue la vertical.Sera from milking cows from 9 dairy farms from the county of San José, Uruguay, were tested with a commercial ELISA test for determination of antibodies against bovine viral diarrhea, bovine rhinotracheitis, neosporosis and chlamydiosis. The prevalence of specific antibodies was 76 and 65,3 % for 1080 sera examined for the viral infections respectively, 29.3% for neosporosis and 10.23% for 420 sera examined for chlamydiosis. Comparison of the prevalence of Neospora infection between heifers and cows, allowed to assume that the main route of transmission was vertical.Facultad de Ciencias Veterinaria

    Prevalence of antibodies against some abortifacient infections of dairy cattle in Uruguay

    Get PDF
    Se analizaron anticuerpos contra el virus de la diarrea viral bovina y de la rinotraqueitis infecciosa bovina, Neospora caninum y Chlamydophila abortus, en vacunos de 9 tambos del Departamento de San José, Uruguay, mediante equipos comerciales de ELISA. La prevalencia de anticuerpos específicos fue de 76 y 65,3 % para 1080 sueros examinados para las infecciones virales respectivamente, 29,3% para neosporosis, y 10,22 % para 420 sueros examinados para clamidiosis. La comparación de las prevalencias de la infección a N. caninum entre las terneras y las vacas, permitió asumir que la principal vía de infección en este caso, fue la vertical.Sera from milking cows from 9 dairy farms from the county of San José, Uruguay, were tested with a commercial ELISA test for determination of antibodies against bovine viral diarrhea, bovine rhinotracheitis, neosporosis and chlamydiosis. The prevalence of specific antibodies was 76 and 65,3 % for 1080 sera examined for the viral infections respectively, 29.3% for neosporosis and 10.23% for 420 sera examined for chlamydiosis. Comparison of the prevalence of Neospora infection between heifers and cows, allowed to assume that the main route of transmission was vertical.Facultad de Ciencias Veterinaria

    Survey of diseases affecting reproduction in freeze bovine semen using the polymerase chain reaction (PCR)

    Get PDF
    Las enfermedades reproductivas son una de las principales causas de los bajos índices de procreo en Uruguay. El diagnóstico de estas enfermedades se lleva a cabo por diversas técnicas de laboratorio; la mayoría de las cuales no permiten la diferenciación de las distintas subespecies de cada microorganismo, hecho que si se puede determinar por medio de la técnica de PCR. En este estudio se intentó determinar la presencia de genomas de: Diarrea Viral Bovina, Herpesvirus bovino tipos 1 y 5, Campylobacter fetus fetus y fetus veneralis y Tritrichomonas foetus foetus. Para ello, 100 pajuelas de semen de bovinos de distintas razas fueron procesadas mediante PCR utilizando “primers” específicos para cada una de las enfermedades en estudio. Todas las muestras analizadas resultaron negativas a la detección de genomas de los agentes mencionados. Esta investigación permitió comprobar el buen nivel de los centros de reproducción evaluados, repercutiendo favorablemente en la sanidad del rodeo nacional. Así mismo, el chequeo de pajuelas de semen por medio de la técnica de PCR demostró ser una herramienta necesaria que debería ser utilizada de rutina ya que permite un rápido y eficiente diagnóstico.Reproductive diseases are a major cause of low calving rates nationwide. The diagnosis of these diseases is performed by various laboratory techniques, most of them do not allow differentiation in different subspecies of each organism, a fact that it can be determined by PCR. This study attempted to determine the presence of genome of bovine viral diarrhea, bovine herpesvirus types 1 and 5, Campylobacter fetus fetus and fetus veneralis and Tritrichomonas foetus foetus. One hundred bovine semen straws were collected and PCR technique using specific primers for each of the diseases studied were applied. All samples were negative for the detection of genomes of the pathogens mentioned. This investigation allowed to check the proper level of insemmination centers evaluated, impacting positively on the health of the national herd. Likewise, the screening of bovine semen straws by PCR proved to be a necessary tool that would be used routinously for quick and efficient diagnosis.Facultad de Ciencias Veterinaria

    A stochastic evaluation of the validity of an animal-health survey in Uruguay

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    This paper introduces spreadsheet simulation models to evaluate the validity of national or regional disease surveys aimed at identifying infection in populations of farm animals. The process of evaluation includes specification or calculation of cluster-level diagnostic test sensitivity (the proportion of animals with the disease which test positive) and specificity (the proportion of animals without the disease which test negative), which are obtained from two probability distributions of the number of positive tests at individual-level expected from infected and non-infected clusters, respectively. Probability distributions for the number of positive clusters expected in a situation of the herd prevalence are specified and used to define survey properties (the survey being considered a diagnostic system), and receiver operating characteristic curves (consisting of a plot of sensitivity and specificity pairs for different cut-off values) are drawn. The result of a survey implemented to determine the prevalence of infectious bovine rhinotracheitis in dairy cattle in Uruguay, South America was used to illustrate this approach. The models can be adapted to a wide range of survey designs in animal health and production.Facultad de Ciencias Veterinaria

    Multiple systemic treatment options in a patient with malignant tenosynovial giant cell tumour

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    Tenosynovial giant cell tumour (TGCT) is a group of rare soft tissues neoplasia affecting synovial joints, bursae and tendon sheaths and is classified as localized type or diffuse type. The diffuse type (TGCT-D), also known as 'pigmented villonodular (teno)synovitis' is characterized by local aggressivity, with invasion and destruction of adjacent soft-tissue structures, and high local recurrence rate. Radical surgery remains the standard therapy while adjuvant radiotherapy may help to control local spread. Malignant TGCT is characterized by high rate of local recurrences and distant metastasis. Few cases of malignant TGCT and very few evidences on systemic therapies are described in the literature, so, to date, no systemic treatment is approved for this rare disease. We report the case of a malignant TGCT patient treated with many different systemic therapies, including chemotherapy and tyrosine-kinase inhibitors, and performed a review of the literature on the systemic treatment options of this rare tumour

    A stochastic evaluation of the validity of an animal-health survey in Uruguay

    No full text
    This paper introduces spreadsheet simulation models to evaluate the validity of national or regional disease surveys aimed at identifying infection in populations of farm animals. The process of evaluation includes specification or calculation of cluster-level diagnostic test sensitivity (the proportion of animals without the disease which test negative), which are obtained from two probability distributions of the number of positive tests at individual-level expected from infected and non-infected clusters, respectively. Probability distributions for the number of positive clusters expected in a situation of the herd prevalence are specifies and used to define survey properties (the survey being considered a diagnostic system), and receiver operating characteristic curves (consisting of a plot of sensitivity and specificity pairs for different cut-off values) are drawn. The result of a survey implemented to determine the prevalence of infectious bovine rhinotracheitis in dairy cattle in Uruguay, South America was used to illustrate this approach. The models can be adapted to a wide range of survey designs in animal health and production.Fil: Suzuki, K.. Universidad Nacional de La Plata; ArgentinaFil: Galosi, Cecilia Monica. Universidad Nacional de La Plata; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Echeverria, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Satragno, D.. Universidad Nacional de La Plata; Argentina. Universidad de la República; UruguayFil: Alzugaray, F.. Universidad Nacional de La Plata; Argentina. Universidad de la República; UruguayFil: de Torres, E.. Universidad Nacional de La Plata; Argentina. Universidad de la República; UruguayFil: Guarino, H.. Universidad Nacional de La Plata; Argentina. Universidad de la República; UruguayFil: Freyre, A.. Universidad Nacional de La Plata; Argentina. Universidad de la República; Urugua

    Survey of diseases affecting reproduction in freeze bovine semen using the polymerase chain reaction (PCR)

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    En este trabajo se describe la puesta punto de la técnica de PCR para la determinación de distintos agentes infecciosos en pajuelas de semen bovino de Uruguay.Fil: Alzugaray, M. F.. Universidad de la República; UruguayFil: Susuki, K.. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias; ArgentinaFil: Acevedo, C.. Universidad de la República; UruguayFil: Satragno, D.. Universidad de la República; UruguayFil: González, G.. Universidad de la República; UruguayFil: Guarino, H.. Universidad de la República; UruguayFil: Bermudez, J.. Universidad de la República; UruguayFil: Echeverria, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentin
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