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  1. Article ; Online: Severo Sales de Barros

    Ana Lucia Schild / Claudio S.L. Barros / David Driemeier / Franklin Riet-Correa / Paulo V. Peixoto / Ricardo A.A. Lemos

    Pesquisa Veterinária Brasileira, Vol

    obituary

    2022  Volume 42

    Keywords Veterinary medicine ; SF600-1100
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Use of smartphone messaging applications to increase diagnostic efficiency in veterinary diagnostic laboratories

    Ricardo A.A. Lemos / Carolina C. Guizelini / Thaísa X. Silva / Larissa L. Souza / Helena C.F. Fonseca / Gisele C. Bonato / Danilo C. Gomes / Rayane C. Pupin

    Pesquisa Veterinária Brasileira, Vol

    2023  Volume 43

    Abstract: ABSTRACT: Many inconclusive diagnoses have been reported in studies carried out in veterinary diagnostic laboratories (VDLs). These inconclusive diagnoses are often associated with field veterinarians sending tissue samples and carcasses for ... ...

    Abstract ABSTRACT: Many inconclusive diagnoses have been reported in studies carried out in veterinary diagnostic laboratories (VDLs). These inconclusive diagnoses are often associated with field veterinarians sending tissue samples and carcasses for histopathological examination. The use of social media in care has the potential as a tool for improvements in animal health. We evaluated the improvement in the rate of conclusive diagnoses in the VDL when using a messaging application for smartphones as a guidance tool for field veterinarians to refer animals and sample tissues for necropsy and histopathology. Veterinarians contacted the VDL team via a messaging app and forwarded videos, images, and clinical-epidemiological history. Based on this information, guidelines were created in real-time for contacting professionals about methods for collecting samples during necropsy and making diagnoses and scheduling visits to properties. The data obtained showed that smartphone messaging applications could be useful tools to expand the performance of VDLs and improve their diagnostic efficiency, especially when sending samples of animals that died is impossible due to certain sanitary conditions.
    Keywords Smartphone messaging applications ; diagnostic laboratories ; animal production ; veterinary pathology ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Natural infestation by ticks as cause of death in beef cattle

    Carolina C. Guizelini / Dyego G.L. Borges / Fernando A. Borges / Welber D.Z. Lopes / Rayane C. Pupin / Ricardo A.A. Lemos

    Pesquisa Veterinária Brasileira, Vol

    2023  Volume 43

    Abstract: ABSTRACT: Although infestation by Rhipicephalus microplus is mentioned as the cause of death among cattle, there are only studies with artificial infestations in which intense parasitism led to the death of cattle due to severe anemia. This study seems ... ...

    Abstract ABSTRACT: Although infestation by Rhipicephalus microplus is mentioned as the cause of death among cattle, there are only studies with artificial infestations in which intense parasitism led to the death of cattle due to severe anemia. This study seems to be the first to describe the epidemiology, clinical-pathological condition, and diagnostic conduct of infestation by R. microplus as the cause of death of European breed calves introduced in shady, enclosed pastures in regions with rainfall prior to the onset of the outbreak. The affected calves presented apathy, anorexia, and anemia and were severely infested by R. microplus. The lethality rate of the outbreak was 36.5%. After the rainy period, the dry season facilitated a decrease in the nutritional status of the affected cattle. The delay in the definitive diagnosis contributed to the economic loss of the farm due to the cost of erroneous treatments and the number of dead cattle. The main factors that contributed to the deaths were climatic, environmental, and individual. This study demonstrates that severe infestations by R. microplus in low-quality pasture-raised calves are fatal and emphasizes the importance of diagnostic tools to reduce the economic loss caused by death due to infestation by ticks.
    Keywords Animal production ; Rhipicephalus microplus ; fatal disease ; economic loss ; anemia ; ticks ; cattle ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Protodioscin levels in Brachiaria spp. in a sheep production system and a brief review of the literature of Brachiaria spp. poisoning in ruminants

    Alberto O. Gaspar / Carolina C. Guizelini / Francisca C. Roberto / Gelson S. Difante / Ricardo C. Brumatti / Camila C.B.F Ítavo / Ricardo A.A. Lemos / Stephen T. Lee

    Pesquisa Veterinária Brasileira, Vol

    2021  Volume 41

    Abstract: ABSTRACT: Plants of the genus Brachiaria, used in several countries as forage, are poisonous to some livestock species. Their toxic principle is protodioscin, and the main form of clinical presentation of the toxicosis is hepatogenous photosensitization. ...

    Abstract ABSTRACT: Plants of the genus Brachiaria, used in several countries as forage, are poisonous to some livestock species. Their toxic principle is protodioscin, and the main form of clinical presentation of the toxicosis is hepatogenous photosensitization. Here we compare protodioscin levels in B. decumbens and B. brizantha and review the literature on the concentrations and methodologies of collection and analysis of the toxic principle in Brachiaria spp. and the risk of contamination of pastures by more toxic species that may facilitate poisoning by plants of this genus in sheep. The experiment was conducted in pastures originally formed by B. brizantha, with many B. decumbens invasion points. The occurrence of cases of poisoning by Brachiaria spp. was the criterion for confirming pasture toxicity. The forage samples were collected at ten random points every 28 days through manual grazing simulation. The samples were analyzed for protodioscin by high-performance liquid chromatography (HPLC) with light scattering by evaporation (ELSD) after being dried and crushed. In the flock of 69 sheep, five poisoning cases occurred, three sheep died, and two recovered. The protodioscin levels found in the evaluated pastures ranged from 0.70 to 0.45%; higher levels appeared in B. decumbens (7.09%) compared to 1.04% in B. brizantha. We suggest that Brachiaria spp. should be avoided in pastures where sheep are grazing.
    Keywords Protodioscin levels ; Brachiaria spp ; sheep ; ovine ; toxic plants ; plant poisoning ; ruminants ; hepatogenic photosensitization ; photodermatitis ; tropical pasture ; ruminant ; steroidal saponins ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2021-07-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Cobalt deficiency in cattle and its impact on production

    Westerlly J. Silva / Carolina C. Guizelini / Gumercindo L. Franco / Rayane C.P. Veiga / Williane G. Arruda / Valter A. Nascimento / Elaine S.P. Melo / Ricardo A. A. Lemos

    Pesquisa Veterinária Brasileira, Vol 40, Iss 11, Pp 837-

    2021  Volume 841

    Abstract: ABSTRACT: Two outbreaks of cobalt deficiency in beef cattle were diagnosed in Midwestern Brazil. We discuss the clinical, epidemiological, pathological features, therapeutic measures, and impact aspects of the production system associated with these ... ...

    Abstract ABSTRACT: Two outbreaks of cobalt deficiency in beef cattle were diagnosed in Midwestern Brazil. We discuss the clinical, epidemiological, pathological features, therapeutic measures, and impact aspects of the production system associated with these outbreaks occurring outbreaks in two farms of extensive cattle raising-system in the state of Mato Grosso do Sul. Seven affected cattle were euthanized and necropsied. Tissues for histopathology and microelements dosage were secured. At Farm A, 3100 cattle of all ages got sick, and 396 died; at Farm B, 148 were affected, and 110 died. In both farms, cattle were fed the same mineral supplement. The main clinical signs were weight loss and weakness, even though a good supply of forage was available in the paddocks. Many cattle stop grazing and chew at tree barks, wood chips from fence posts, and bones. In addition to the deaths, there was a compromised growth, and the reproductive rates fell sharply. The necropsied cattle were thin, with rough hair coat and pale mucous membranes. The liver was diffusely orange and showed a lobular pattern. The bone marrow was gelatinous and diffusely yellow. Histological changes included hemosiderosis in the liver and spleen, hepatocellular vacuolar degeneration, and myeloid and erythroid hypoplasia of the bone marrow. In the white matter of four cattle’s brains, the myelin sheath was markedly distended (spongy degeneration). Proliferative parasitic abomasitis was observed in three cattle. The presumptive diagnosis was based on the association of the clinical picture, the necropsy findings, and the ruling out of other possible causes. The diagnosis was confirmed by the favorable response to treatment with cobalt and vitamin B12 orally and by mineral supplementation.
    Keywords Cattle diseases ; deficiency diseases ; mineral deficiencies ; cobalt ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Poisoning by Brachiaria spp. in various lamb breeds at increasing levels of supplementation during growth

    Gleice K.A. Melo / Camila C.B.F. Ítavo / Jonilson A. Silva / Kedma L.S.M. Ferelli / Pâmila C.G. Silva / Rayane C. Pupin / Ricardo A.A. Lemos

    Pesquisa Veterinária Brasileira, Vol 39, Iss 12, Pp 978-

    2020  Volume 982

    Abstract: ABSTRACT: The study evaluate the frequency of poisoning by Brachiaria spp. at the rearing, growth and termination stages in various lamb breeds at increasing supplementation levels. Forty-five lambs were used in the growth phase in pastures of Brachiaria ...

    Abstract ABSTRACT: The study evaluate the frequency of poisoning by Brachiaria spp. at the rearing, growth and termination stages in various lamb breeds at increasing supplementation levels. Forty-five lambs were used in the growth phase in pastures of Brachiaria spp. with a history of having induced poisoning. The lambs were distributed in nutritional treatments: lambs receiving mineral supplementation (MS), energy/protein supplementation (EPS) at 0.8% of body weight (bw), EPS at 1.6% bw and EPS at 2.4% bw. The lambs were allotted two flocks (F1 and F2) of 21 and 24 lambs each. Clinical signs of poisoning were observed in all treatments. All MS lambs died. The frequency of poisoning were highest in the 0.8% EPS and 1.6% EPS treatments. All lambs in the 2.4% EPS treatment recovered. F1 lambs had a higher frequency of poisoning than F2 lambs regardless of nutritional treatment. Morbidity rates for the F1 and F2 lambs were 52.3 and 16.7%, respectively. Supplementation was not sufficient to decrease the frequency of poisoning in lambs at the termination stage, which was dependent on the genetic origin of the lambs. EPS of 2.4% bw treatment, was an efficient nutritional strategy to minimize the effects of poisoning in lambs fed on Brachiaria spp.
    Keywords Poisoning ; Brachiaria spp ; lamb ; supplementation ; growth ; hepatogenic photosensitization ; toxic plants ; small ruminants ; plant poisoning ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Comparison of two collection methods to determine protodioscin concentrations in Brachiaria spp. and to monitor Brachiaria spp. Poisoning

    Gleice K.A. Melo / Westerlly J. Silva / Rayane C. Pupin / Rubiane F. Heckler / Lucimara M. Nonato / Camila C.B.F. Ítavo / Valquíria B.N. Ferreira / Ricardo A.A. Lemos

    Pesquisa Veterinária Brasileira, Vol 39, Iss 9, Pp 710-

    2019  Volume 714

    Abstract: ABSTRACT: The objective of this study was to evaluate the methods of collecting Brachiaria spp. (Simulated Grazing vs. Total Collection) for the determination of protodioscin concentrations and to monitor the intoxication in sheep susceptible and ... ...

    Abstract ABSTRACT: The objective of this study was to evaluate the methods of collecting Brachiaria spp. (Simulated Grazing vs. Total Collection) for the determination of protodioscin concentrations and to monitor the intoxication in sheep susceptible and resistant to poisoning by Brachiariaspp. The collection of Brachiaria spp. was done through two different methods. The first one consisted in throwing a metallic square at 10 random picket points. The second was performed simulating, with the hands, the grazing behavior of sheep. The leaf blades obtained by the two methods were conditioned in a forced ventilation oven. The extraction and quantification of protodioscin from the dry milled plant material was done by reverse-phase high-performance liquid chromatography (HPLC). The collections were carried out at three stages of the life of experimental lamb (suckling, rearing, and finishing). The lambs were divided into resistant and susceptible to intoxication by Brachiaria spp. The criterion for a lamb to be considered sensitive was to present some clinical signs at some stage of its life. No significant differences were observed between the general averages of the two collections when the evaluation was done in the whole period. However, a significant difference was found at the onset of the clinical signs. The concentrations of protodioscin in this period were higher in Brachiaria spp. collected by the simulating grazing method. Both methodologies were efficient to determine the level of protodioscin in the pastures of Brachiaria spp. However, during the periods when the outbreaks occurred, the simulated grazing method was more reliable.
    Keywords Collection methods ; protodioscin concentrations ; Brachiaria spp ; poisoning ; hepatogenic photosensitization ; simulated grazing ; toxic plants ; small ruminants ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2019-11-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal (CBPA)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Intoxicação experimental por Simarouba versicolor (Simaroubaceae) em ovinos e indução de resistência ao consumo da planta

    Ariany C. Santos / Tatiane C. Faccin / Nilton M. Carvalho / Paula V. Leal / Arnildo Pott / Ricardo A. A. Lemos

    Pesquisa Veterinária Brasileira, Vol 33, Iss 3, Pp 299-

    2013  Volume 304

    Abstract: Simarouba versicolor é uma árvore semidecídua pertencente à família Simaroubaceae. Um surto de intoxicação por S. versicolor em bovinos por brotos da planta presente no pasto em Mato Grosso do Sul e sua reprodução experimental foram descritos. Esse ... ...

    Abstract Simarouba versicolor é uma árvore semidecídua pertencente à família Simaroubaceae. Um surto de intoxicação por S. versicolor em bovinos por brotos da planta presente no pasto em Mato Grosso do Sul e sua reprodução experimental foram descritos. Esse estudo teve por objetivos verificar experimentalmente se os ovinos podem ser utilizados como modelo clínico-patológico no estudo da intoxicação por Simarouba versicolor St. Hil. (fam. Simaroubaceae), determinar se há indução de resistência pela ingestão de pequenas e repetidas doses e, se a planta mantém sua toxicidade quando dessecada. Foram realizados dois experimentos, sendo o primeiro com folhas verdes ou folhas dessecadas e trituradas de S. versicolor em doses únicas de 5g/kg, 5g/kg e 3g/kg a três ovinos (Ovino 1, 2 e 3 respectivamente). O experimento 2, foi realizado com diferentes doses diárias de folhas dessecadas e trituradas de S. versicolor em quatro ovinos que receberam 1,5g/kg, 0,75g/kg, 0,6g/kg e 0,3g/kg e, com um ovino que recebeu 3g/kg como controle positivo (Ovino 4). A administração foi suspensa quando os ovinos apresentaram sinais clínicos da intoxicação. Após doze dias de recuperação, os animais sobreviventes foram desafiados com a mesma dose diária da planta ingerida anteriormente para avaliar o desenvolvimento de resistência. Os sinais clínicos observados nos dois experimentos caracterizaram-se por anorexia, mucosas oculares congestas, polidipsia, sialorreia, fezes pastosas que evoluíram para diarreia líquida fétida esverdeada, decúbito lateral e morte para os Ovinos 1 a 7. As principais lesões histológicas observadas foram necrose do tecido linfoide (linfonodos, baço, placas de Peyer) e enterite necrosante. Com os resultados obtidos, pode-se concluir que os ovinos podem ser utilizados como modelo experimental clínico-patológico na intoxicação por S. versicolor. Com o método utilizado, não houve resistência ao consumo diário de folhas da planta pelos ovinos e, as folhas mantiveram sua toxicidade quando dessecadas.
    Keywords Plantas tóxicas ; Simarouba versicolor ; Simaroubaceae ; necrose linfoide ; enterite necrosante ; intoxicação por plantas ; ovinos ; Animal culture ; SF1-1100 ; Agriculture ; S
    Language English
    Publishing date 2013-03-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal - CBPA
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Intoxicação experimental por Simarouba versicolor (Simaroubaceae) em ovinos e indução de resistência ao consumo da planta

    Ariany C. Santos / Tatiane C. Faccin / Nilton M. Carvalho / Paula V. Leal / Arnildo Pott / Ricardo A. A. Lemos

    Pesquisa Veterinária Brasileira, Vol 33, Iss 3, Pp 299-

    2013  Volume 304

    Abstract: Simarouba versicolor é uma árvore semidecídua pertencente à família Simaroubaceae. Um surto de intoxicação por S. versicolor em bovinos por brotos da planta presente no pasto em Mato Grosso do Sul e sua reprodução experimental foram descritos. Esse ... ...

    Abstract Simarouba versicolor é uma árvore semidecídua pertencente à família Simaroubaceae. Um surto de intoxicação por S. versicolor em bovinos por brotos da planta presente no pasto em Mato Grosso do Sul e sua reprodução experimental foram descritos. Esse estudo teve por objetivos verificar experimentalmente se os ovinos podem ser utilizados como modelo clínico-patológico no estudo da intoxicação por Simarouba versicolor St. Hil. (fam. Simaroubaceae), determinar se há indução de resistência pela ingestão de pequenas e repetidas doses e, se a planta mantém sua toxicidade quando dessecada. Foram realizados dois experimentos, sendo o primeiro com folhas verdes ou folhas dessecadas e trituradas de S. versicolor em doses únicas de 5g/kg, 5g/kg e 3g/kg a três ovinos (Ovino 1, 2 e 3 respectivamente). O experimento 2, foi realizado com diferentes doses diárias de folhas dessecadas e trituradas de S. versicolor em quatro ovinos que receberam 1,5g/kg, 0,75g/kg, 0,6g/kg e 0,3g/kg e, com um ovino que recebeu 3g/kg como controle positivo (Ovino 4). A administração foi suspensa quando os ovinos apresentaram sinais clínicos da intoxicação. Após doze dias de recuperação, os animais sobreviventes foram desafiados com a mesma dose diária da planta ingerida anteriormente para avaliar o desenvolvimento de resistência. Os sinais clínicos observados nos dois experimentos caracterizaram-se por anorexia, mucosas oculares congestas, polidipsia, sialorreia, fezes pastosas que evoluíram para diarreia líquida fétida esverdeada, decúbito lateral e morte para os Ovinos 1 a 7. As principais lesões histológicas observadas foram necrose do tecido linfoide (linfonodos, baço, placas de Peyer) e enterite necrosante. Com os resultados obtidos, pode-se concluir que os ovinos podem ser utilizados como modelo experimental clínico-patológico na intoxicação por S. versicolor. Com o método utilizado, não houve resistência ao consumo diário de folhas da planta pelos ovinos e, as folhas mantiveram sua toxicidade quando dessecadas.
    Keywords Plantas tóxicas ; Simarouba versicolor ; Simaroubaceae ; necrose linfoide ; enterite necrosante ; intoxicação por plantas ; ovinos ; Animal culture ; SF1-1100 ; Agriculture ; S
    Language English
    Publishing date 2013-03-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal - CBPA
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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    Kategorien

  10. Article ; Online: Intoxicação experimental por Simarouba versicolor (Simaroubaceae) em ovinos e indução de resistência ao consumo da planta

    Ariany C. Santos / Tatiane C. Faccin / Nilton M. Carvalho / Paula V. Leal / Arnildo Pott / Ricardo A. A. Lemos

    Pesquisa Veterinária Brasileira, Vol 33, Iss 3, Pp 299-

    2013  Volume 304

    Abstract: Simarouba versicolor é uma árvore semidecídua pertencente à família Simaroubaceae. Um surto de intoxicação por S. versicolor em bovinos por brotos da planta presente no pasto em Mato Grosso do Sul e sua reprodução experimental foram descritos. Esse ... ...

    Abstract Simarouba versicolor é uma árvore semidecídua pertencente à família Simaroubaceae. Um surto de intoxicação por S. versicolor em bovinos por brotos da planta presente no pasto em Mato Grosso do Sul e sua reprodução experimental foram descritos. Esse estudo teve por objetivos verificar experimentalmente se os ovinos podem ser utilizados como modelo clínico-patológico no estudo da intoxicação por Simarouba versicolor St. Hil. (fam. Simaroubaceae), determinar se há indução de resistência pela ingestão de pequenas e repetidas doses e, se a planta mantém sua toxicidade quando dessecada. Foram realizados dois experimentos, sendo o primeiro com folhas verdes ou folhas dessecadas e trituradas de S. versicolor em doses únicas de 5g/kg, 5g/kg e 3g/kg a três ovinos (Ovino 1, 2 e 3 respectivamente). O experimento 2, foi realizado com diferentes doses diárias de folhas dessecadas e trituradas de S. versicolor em quatro ovinos que receberam 1,5g/kg, 0,75g/kg, 0,6g/kg e 0,3g/kg e, com um ovino que recebeu 3g/kg como controle positivo (Ovino 4). A administração foi suspensa quando os ovinos apresentaram sinais clínicos da intoxicação. Após doze dias de recuperação, os animais sobreviventes foram desafiados com a mesma dose diária da planta ingerida anteriormente para avaliar o desenvolvimento de resistência. Os sinais clínicos observados nos dois experimentos caracterizaram-se por anorexia, mucosas oculares congestas, polidipsia, sialorreia, fezes pastosas que evoluíram para diarreia líquida fétida esverdeada, decúbito lateral e morte para os Ovinos 1 a 7. As principais lesões histológicas observadas foram necrose do tecido linfoide (linfonodos, baço, placas de Peyer) e enterite necrosante. Com os resultados obtidos, pode-se concluir que os ovinos podem ser utilizados como modelo experimental clínico-patológico na intoxicação por S. versicolor. Com o método utilizado, não houve resistência ao consumo diário de folhas da planta pelos ovinos e, as folhas mantiveram sua toxicidade quando dessecadas.
    Keywords Plantas tóxicas ; Simarouba versicolor ; Simaroubaceae ; necrose linfoide ; enterite necrosante ; intoxicação por plantas ; ovinos ; Animal culture ; SF1-1100 ; Agriculture ; S
    Language English
    Publishing date 2013-03-01T00:00:00Z
    Publisher Colégio Brasileiro de Patologia Animal - CBPA
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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