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Search Results: 1 - 10 of 451734 matches for " Márcio Vieira da; "
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Productive losses on broiler preslaughter operations: effects of the distance from farms to abattoirs and of lairage time in a climatized holding area
Vieira, Frederico Márcio Corrêa;Silva, Iran José Oliveira da;Barbosa Filho, José Antonio Delfino;Vieira, Afranio Márcio Corrêa;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001100021
Abstract: this work aimed to assess the effects of preslaughter lairage time on the welfare and mortality of broilers transported in different farm-abattoir distances. it was evaluated 215 poultry transport trucks from a commercial poultry slaughterhouse from 2006 to 2007. data were obtained from the holding area acclimatized through fans and water misting in the mornings, afternoons and at night. the thermal variables (temperature and relative humidity), distance, lairage time and density of birds per cage were considered in the analysis. the effects of distance and lairage time were important in the variation of rectal temperature of the animals and on the number of dead animals per truck. two models were developed (mean and dispersion), for each response variable in function of the interaction between lairage time and distance. as the lairage time in the holding area increased, the rectal temperature of the birds was reduced for all the studied distances. in farm-abattoir distances higher than 25 km, mortality was low when lairage time was lower than 1 hour. however, for distances below 25 km, in the same time interval, the number of dead birds was two-fold higher than in the first situation. the adjustment of lairage time has to be done accordingly to the distance provided that the lairage environment is correctly climatized.
Detection of different Staphylococcus aureus strains in bovine milk from subclinical mastitis using PCR and routine techniques
Vieira-da-Motta, Olney;Folly, Márcio Manh?es;Sakyiama, Cássia Camargo Hagen;
Brazilian Journal of Microbiology , 2001, DOI: 10.1590/S1517-83822001000100007
Abstract: contamination of fresh milk with staphylococcus aureus was assessed comparatively through routine phenotypic (coagulase tube test and coagulase slide test) and genotypic (pcr) screening of 128 s. aureus strains isolated from 555 milk samples. these samples were collected from 362 cows with subclinical mastitis, hosted in different dairy herds at various locations of the northern and northeastern rural areas of the state of rio de janeiro, 39.7% of which were cmt-positive. all s. aureus isolates tested positive for the presence of the coagulase gene by pcr and the isolates could be grouped into four distinct classes according to the size of the pcr product. the strains also yielded variable results when assayed with coagulase test. taken together, these data indicate the existence of extensive polymorphism at the coagulase gene locus in the genus staphylococcus and exemplifies the extent of molecular and phenotypic heterogeneity associated with the strains circulating in rural herds.
Etiologia e epidemiologia das dermatofitoses em Goiania, GO, Brasil
Costa Théo Rodrigues,Costa Márcio Rodrigues,Silva Marcelo Vieira da,Rodrigues Adriana Batista
Revista da Sociedade Brasileira de Medicina Tropical , 1999,
Abstract: As dermatofitoses s o infec es superficiais capazes de produzir les es em tecidos queratinizados, como pele, pêlo e unhas. Foram examinados 6068 indivíduos procedentes de Goiania, com suspeita clínica de infec es fúngicas, durante 5 anos (1993-1997), verificando-se a incidência e a etiologia das dermatofitoses nos referidos pacientes. Material coletado de várias regi es corpóreas permitiu caracterizar 1595 dermatófitos em 1345 indivíduos. A identifica o dos dermatófitos realizada através de cultivo em ágar Sabouraud e microcultivo em lamina, permitiu verificar uma maior freqüência de Trichophyton rubrum (37,4%), T. mentagrophytes (36,4%) e Microsporum canis (16%). Os dermatófitos foram mais freqüentemente encontrados produzindo les es nos pés (30,5%), regi o inguino crural (17,8%) e regi o glabra do corpo (15,5%). Foi analisada a distribui o corporal das les es de dermatofitoses com os respectivos agentes etiológicos encontrados. Melhores condi es higiênicas e diagnóstico precoce da doen a s o necessários para controlar e diminuir a incidência de dermatofitoses na nossa regi o.
Detection of different Staphylococcus aureus strains in bovine milk from subclinical mastitis using PCR and routine techniques
Vieira-da-Motta Olney,Folly Márcio Manh?es,Sakyiama Cássia Camargo Hagen
Brazilian Journal of Microbiology , 2001,
Abstract: Contamination of fresh milk with Staphylococcus aureus was assessed comparatively through routine phenotypic (coagulase tube test and coagulase slide test) and genotypic (PCR) screening of 128 S. aureus strains isolated from 555 milk samples. These samples were collected from 362 cows with subclinical mastitis, hosted in different dairy herds at various locations of the Northern and Northeastern rural areas of the State of Rio de Janeiro, 39.7% of which were CMT-positive. All S. aureus isolates tested positive for the presence of the coagulase gene by PCR and the isolates could be grouped into four distinct classes according to the size of the PCR product. The strains also yielded variable results when assayed with coagulase test. Taken together, these data indicate the existence of extensive polymorphism at the coagulase gene locus in the genus Staphylococcus and exemplifies the extent of molecular and phenotypic heterogeneity associated with the strains circulating in rural herds.
Recupera??o de gotejadores obstruídos devido à utiliza??o de águas ferruginosas
Vieira, Gustavo H. S.;Mantovani, Everardo C.;Silva, José G. F. da;Ramos, Márcio M.;Silva, Cláudio M.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2004, DOI: 10.1590/S1415-43662004000100001
Abstract: a study was carried out (reciclean) to evaluate the efficiency of using the phosphoric acid, sodium hypochlorite, a commercial product and mechanical impact for cleaning the drippers in which the clogging was due to the presence of high iron content in water. the experiment was set up in the vista alegre farm, located in jaboticatubas county - minas gerais state. a drip irrigation system was adopted for the accomplishment of the tests. eight treatments were tested, of which, seven with application of chemical products and one with mechanical impact. in accomplishing the chemical treatments, the phosphoric acid was used at ph 2 and 3, sodium hypochlorite at 100, 50 and 25 mg l-1 chlorine and reciclean at 50 and 25 mg l-1. according to the results, the following conclusions were drawn: the treatment using the phosphoric acid at ph 2 provided the best results, when evaluating the improvement of uniformity in the irrigation system, since it showed the highest increase in the values of uniformity coefficients (cud and cuc); however, it is an expensive treatment. the treatment with 25 mg l-1 chlorine presented the best benefit/cost relation, since it showed to be the cheapest besides being the second best in improving the uniformity of the irrigation system. the mechanical impact is a good alternative to recover the drip irrigation systems, principally under organic farming.
Seasonal response of edaphic bioindicators using green manure in Brazilian semi-arid conditions
Pimentel, Márcio Sampaio;Carvalho, Rubens Silva;Martins, Lindete Míria Vieira;Silva, Adriano Victor Lopes da;
Revista Ciência Agron?mica , 2011, DOI: 10.1590/S1806-66902011000400002
Abstract: the goal of this work was to evaluate the response of edaphic macrofauna, soil microbial biomass carbon, soil basal respiration, metabolic quotient and labile carbon of fumigated soil in a fluvic neosol. the experimental design was in randomized blocks, with five treatments (four green manure mix and one control) and four replications, and subsequent planting of melon (cucumis melo l.) under semi-arid conditions in juazeiro, bahia state, brazil, from august 2006 to august 2007. soil samples were collected at a depth of 0-10 cm at 6 days before, and 117; 215 and 354 days after green manure mix planting. the results indicate that none of the attributes presented a significant difference for the treatments, but changed significantly in relation to the time of sample collection. the higher levels of soil microbial biomass carbon and labile carbon of fumigated soil were measured 117 days after planting. soil microbial biomass carbon was inversely correlated with soil basal respiration and metabolic quotient, which increased as of 215 days after planting. at 354 days after planting, the edaphic macrofauna presented the highest density, richness, diversity and uniformity. ants and beetles were most abundant in the areas studied.
Avalia??o bayesiana da eficácia da manuten??o via processo de renova??o generalizado
Moura, Márcio das Chagas;Rocha, Sérgio Parente Vieira da;Droguett, Enrique López;Jacinto, Carlos Magno;
Pesquisa Operacional , 2007, DOI: 10.1590/S0101-74382007000300009
Abstract: the generalized renewal process (grp) is a class of probabilistic models that handles repair actions according to the reduction they provide on the real age of an equipment/system. grp is an extension of the renewal process and non homogeneous poisson process and it will be used to evaluate repair actions regarding their efficacy degree. considering that the times between failures follow a weibull distribution, such an evaluation will be accomplished through the estimation of the grp parameter distributions and uncertainty analysis on the expected number of failures through monte carlo simulation. due to paucity of failure data, the probabilistic inference procedure will be executed through the bayesian paradigm which allows for the use of other sources of information, besides the failure data, in the process of estimating the probability distribution on some parameter of interest.
Toxoplasma gondii genotyping in a dog co-infected with distemper virus and ehrlichiosis rickettsia
Moretti, Leandro d'Arc;Silva, Aristeu Vieira da;Ribeiro, Márcio Garcia;Paes, Antonio Carlos;Langoni, Hélio;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2006, DOI: 10.1590/S0036-46652006000600012
Abstract: this paper reports a toxoplasmosis, erhlichiosis and distemper co-infection in a dog with an exuberant neuropathological clinical picture. primary involvement was discussed based on information collected in the analysis of the clinical case, such as neurological impairment, epidemiological data, poor immunoprophylactic scheme of the dog affected and the role of these diseases on immunosuppression. canine distemper and ehrlichiosis were diagnosed based on epidemiologic data, clinical signs, hematological and cytological evaluation. toxoplasma gondii was isolated and genetically characterized as type i using restriction analysis (rflp) with sag-2 genes. immunosuppression features of both dogs and human beings are discussed, as well as implications on animal and public health. this is the first report on toxoplasmosis, ehrlichiosis and distemper co-infection in a dog in brazil, associated with genotyping determination of the t. gondii strain involved.
Análise do custo e do raio econ?mico de transporte de madeira de reflorestamentos para diferentes tipos de veículos
Silva, Márcio Lopes da;Oliveira, Robson José de;Valverde, Sebasti?o Renato;Machado, Carlos Cardoso;Pires, Vanessa Aparecida Vieira;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000600012
Abstract: the objective of this study was to establish the viable transport maximum distance for each type of wood transportation vehicle from the harvest areas to the consumption centers. thus, reforestation cost and revenue data were used, as well as the load capacity of different types of vehicles used for wood transport. the application of economic criteria (vpl, tir, cmp and bcpe) showed that the distances varied between 155 and 226 km, for the small truck and rodotrem (truck with two large trailers), respectively. it was concluded that rodotrem could reach a greater distance, with wood price being the factor most influencing maximum transport distance.
Occurrence of “Babesia" sp. in crossbred calves by diagnosis methods in Campos dos Goytacazes, RJ, Brazil Ocorrência de "Babesia" sp. em bezerros mesti os, por meio de testes sorológicos, em Campos dos Goytacazes, RJ, Brasil
Márcio Manh?es Folly,Roberto Madruga,Ver?nica Pamela Emmott,Maria Angélica Vieira da Costa Pereira
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: 305 dairy calves sera samples at different ages for a serological survey in order to determine antibodies serum prevalence against Babesisa bovis and Babesia bigemina in zebu cattle as well as the crossbreds in Campos dos Goytacazes, RJ, Brazil were collected. By Indirect Fluorescent Antibody Test (IFAT) and Indirect Enzyme-Linked Immunoadsorbent Assay (ELISA) data were analyzed. Positive serum dairy cattle average percentages indicated 90.20 and 90.50% for B. bovis and 88.20 and 78.70% for B. bigemina by IFAT and ELISA, respectively. Both B. bovis and B. bigemina tests agreement ratio were 98.00 and 61.00%. Serum prevalence showed that the region is enzootically considered stable for bovine babesiosis infection with high disease prevalence. In Campos dos Goytacazes region whose livestock activity has been noted as a second income supporting, the present study may be regarding as unpublished, at all. Com o objetivo de realizar um levantamento soroepidemiológico para B. bovis e B. bigemina em bezerros de ra as zebuínas e seus cruzamentos no município de Campos dos Goytacazes, RJ, foram coletadas 305 amostras de soros de bezerros de diferentes faixas etárias de propriedades dedicadas à produ o leiteira. Os dados foram analisados pelas técnicas de imunofluorescência indireta (IFI) e prova de imunoadsor o enzimática (ELISA). As médias dos percentuais obtidos de bovinos com sorologia positiva para B. bovis e B. bigemina foram de 90,20 e 90,50% e de 88,20 e 78,70% para IFI e ELISA, respectivamente. O grau de concordancia dos testes para B. bovis foi de 98,00% e o de B. bigemina, de 61,00%. A soroprevalência encontrada caracteriza esta regi o como uma área de estabilidade enzoótica para B. bovis, com índice elevado na prevalência de portadores de Babesia sp. O presente trabalho é inédito na regi o de Campos dos Goytacazes, que tem a pecuária como segunda fonte de renda.
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