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	Provedor de dados R. Bras. Zootec. (1) Autor Carvalheiro,Roberto (1) Fries,Luiz Alberto (1) Muniz,Carolina Amália de Souza Dantas (1) Queiroz,Sandra Aidar de (1) Palavra-chave Correlação genética entre efeitos direto e materno (1) Dias para atingir 160 do nascimento à desmama (1) Ganho médio do nascimento à desmama (1) Herdabilidade do efeito direto (1) Herdabilidade do efeito materno (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2005 (1) País Brazil (1) Idioma Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 316 Primeira ... 1 2 3 4 5 6 7 8 9 ... Última DAIRY HERD MANAGEMENT PRACTICES FOCUSING ON PREWEANED HEIFERS AgEcon Ott, Stephen L.. The National Dairy Heifer Evaluation Project ( NDHEP ) was conducted by the National Animal Health Monitoring System (NAHMS ) from April 1991 through July 1992 with the assistance of 1,811 producers from 28 states. Producers included in the study each had herds of 30 or more milk cows, representing 78 percent of the milk cows in the U.S. The average total of cattle and calves on each operation was 169.4. The main breed on 94.9% of operations was Holstein. Slightly over 46 percent of operations stated reproductive problems as the cause of low milk production of cows culled from the herd. Newborn calves were separated from their mothers before nursing on 28.0 percent of operations and less than 12 hours after birth on 39.6 percent of operations. On 64.0... Tipo: Report Palavras-chave: NAHMS; Dairy; Cattle; Monitoring; Epidemiology; Preweaning; Heifer; Production; Morbidity; Mortality; Death loss; Illness; Colostrum; Calving; Dehorning; Vaccination; Scours; Antibiotics; Feed; Milk replacer; Livestock Production/Industries. Ano: 1994 URL: http://purl.umn.edu/32754 Datura Genus Weeds as an Epidemiological Factor of Alfalfa mosaic virus (AMV), Cucumber mosaic virus (CMV), and Potato virus Y (PVY) on Solanaceus Crops Agricultura Técnica Ormeño,Juan; Sepúlveda,Paulina; Rojas,Ricardo; Araya,Jaime E. Plant samples of jimsonweed (Datura stramonium L.) and thornapple (D. ferox L.) were collected to determine the presence of Cucumber mosaic virus (CMV), Alfalfa mosaic virus (AMV), and Potato virus Y (PVY) in Santiago, Chile (33º34’ S lat, 70º38’ W long, altitude 625 mosl), using double stranded RNA (dsRNA) analysis and ELISA. Both weeds were positive to the three types of virus with a percentage of infection ranging from 20-30% except for PVY infection in D. stramonium with an incidence of 5%. Under controlled conditions, the aphid Myzus persicae (Sulzer) transmitted CMV from D. ferox to tomatoes (Lycopersicon esculentum Mill.) and sweet peppers (Capsicum annuum L.), but did not transfer it to potatoes (Solanum tuberosum L.). Seeds of positive D.... Tipo: Journal article Palavras-chave: AMV; CMV; PVY; Epidemiology. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000400001 Detección, disperción y muestreo en la erradicación del Citrus Tristeza Virus en plantaciones comerciales de cítricos Colegio de Postgraduados Ruiz García, Noé. La dispersión espacio-temporal del Citrus tristeza virus se caracterizó en Tamaulipas de diciembre de 2001 a marzo de 2004, en 11 huertos comerciales de naranja dulce injerta- dos en naranjo agrio. Adicionalmente, se comparó el desempeño de la técnica serológica inmunoimpresión-ELISA con respecto a DAS-ELISA propuesta en la normatividad ofi- cial mexicana de la Campaña Nacional contra CTV. El objetivo fue proporcionar bases epidemiológicas e incorporar criterios de diagnóstico viral en una propuesta de muestreo con fines de erradicación. Inmunoimpresión-ELISA fue tan confiable (97.8 %) como DAS-ELISA en identificar árboles positivos, siendo 54.9% más económica e implicó solo una sexta parte del tiempo de procesado. La detectabilidad en impresiones... Tipo: Tesis Palavras-chave: Citrus tristeza virus; Serología; Muestreo; Vectores; Epidemiología Citrus tristeza virus; Serology; Sampling; Vectors; Epidemiology. Ano: 2012 URL: http://hdl.handle.net/10521/1020 Detección, dispersión y muestreo en la erradicación del Citrus Tristeza Virus en plantaciones comerciales de cítricos Colegio de Postgraduados Ruiz García, Noé. La dispersión espacio-temporal del Citrus tristeza virus se caracterizó en Tamaulipas de diciembre de 2001 a marzo de 2004, en 11 huertos comerciales de naranja dulce injerta- dos en naranjo agrio. Adicionalmente, se comparó el desempeño de la técnica serológica inmunoimpresión-ELISA con respecto a DAS-ELISA propuesta en la normatividad ofi- cial mexicana de la Campaña Nacional contra CTV. El objetivo fue proporcionar bases epidemiológicas e incorporar criterios de diagnóstico viral en una propuesta de muestreo con fines de erradicación. Inmunoimpresión-ELISA fue tan confiable (97.8 %) como DAS-ELISA en identificar árboles positivos, siendo 54.9% más económica e implicó solo una sexta parte del tiempo de procesado. La detectabilidad en impresiones... Tipo: Tesis Palavras-chave: Citrus tristeza virus; Serología; Muestreo; Vectores; Epidemiología; Doctorado; Fitopatología; Fitopatología; Serology; Sampling; Vectors; Epidemiology. Ano: 2008 URL: http://hdl.handle.net/10521/1348 Detection and epidemiological progress of quiescent avocado diseases Ciência Rural Fischer,Ivan Herman; Moraes,Matheus Froes de; Firmino,Ana Carolina; Amorim,Lilian. ABSTRACT: One of the major problems in the commercialization of avocados is the incidence of postharvest diseases, especially anthracnose (Colletotrichum spp.) and stem-end rot (Lasiodiplodia theobromae, Fusicoccum aesculi and Neofusicoccum spp.). As there is a lack of epidemiological information on these pathosystems, the objective of this study was to establish a method to detect quiescent infections and characterize their temporal progression and spatial pattern in a commercial orchard. Detection of quiescent infections was evaluated in flowers and fruits that were immature and in commercial harvest stage, treated with paraquat, ethrel or water. Treatment of flowers and immature fruits with paraquat led to rapid detection of Colletotrichum spp. In two... Tipo: Info:eu-repo/semantics/article Palavras-chave: Persea americana; Postharvest rot; Epidemiology. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000800151 Detection of multiple noroviruses associated with an international gastroenteritis outbreak linked to oyster consumption ArchiMer Le Guyader, Soizick; Bon, Fabienne; Demedici, Dario; Parnaudeau, Sylvain; Bertone, Alessandra; Crudeli, Silvia; Doyle, Aoife; Zidane, Mohamed; Suffredini, Elisabetta; Kohli E, Evelyne; Maddalo, Francesco; Monini, Marina; Gallay, Anne; Pommepuy, Monique; Pothier, Pierre; Ruggeri, Franco M.. An international outbreak linked to oyster consumption involving a group of over 200 people in Italy and 127 total subjects in 13 smaller clusters in France was analyzed using epidemiological and clinical data and shellfish samples. Environmental information from the oyster-producing area, located in a lagoon in southern France, was collected to investigate the possible events leading to the contamination. Virologic analyses were conducted by reverse transcription-PCR (RT-PCR) using the same primer sets for both clinical and environmental samples. After sequencing, the data were analyzed through the database operated by the scientific network FoodBorne Viruses in Europe. The existence of an international collaboration between laboratories was critical to... Tipo: Text Palavras-chave: Seafood; Contamination; Norovirus; Epidemiology; Virology; Oyster. Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2096.pdf Detection of Rickettsial DNA in ixodid ticks recovered from dogs and cats in Japan OAK Hiraoka, Hiroko; Shimada, Yojiro; Sakata, Yoshimi; Watanabe, Malaika; Itamoto, Kazuhito; Okuda, Masaru; Inokuma, Hisashi; 猪熊, 壽. DNA from ticks recovered from 1137 dogs and 133 cats from Ell over Japan were examined for Rickettsia infection by citrate synthase gene (gltA)-based PCR and partial nucleotide sequencing. A total of 91 dog tick samples and 18 cat tick samples showed a single band of the appropriate size in the nested PCR. Sequence analysis was successfully performed on 102 samples. DNA of Rickettsia japonica or closely related Rickettsia spp. strains were detected from 38 licks in 16 prefectures mainly in western Japan. The other 33, detected from 13 prefectures including Hokkaido and Okinawa, were found to be Rickettsia helvetica or closely related strains. A total of 29 DNA that showed highest homology with Rickettsia akari or closely related strains were detected in 19... Palavras-chave: Canine; Epidemiology; Feline; Rickettsia; Tick. Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/923 Development and Evaluation of an Indirect ELISA: Serological Survey to Detect Specific Antibodies to Bovine Herpesvirus 4 BABT Krüger,Ernesto Renato; Penha,Tânia Regina; Hummelgen,Fernanda Cristina; Agottani,Jorge Bacila; Reva,Demétrio; Gonçalves,Robson; Thomaz-Soccol,Vanete. ABSTRACTThe aim of this work was to develop and evaluate an indirect enzyme-linked immunosorbent assay (ELISA) and made a serological screening for specific antibodies to BoHV-4. Bovine serum samples were collected from different Brazilian states and evaluated for the presence of antibodies for BoHV-4 and BoHV-1. The serological results obtained showed that the indirect ELISA assay could be applied for the detection of specific antibodies for BoHV-4. The ELISA test allowed concluding that BoHV-4 is present in bovines in every Brazilian state from which serum samples were collected. The ELISA assay here standardized proved to be useful for the epidemiological studies and showed a positivity range from 1.8 to 66% in Brazil. Tipo: Info:eu-repo/semantics/article Palavras-chave: BoHV-4; Serology; Diagnostic; Cattle; Epidemiology. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000500725 Diagrammatic scale to assess downy mildew severity in melon Horticultura Brasileira Michereff,Sami J; Noronha,Marissônia A; Lima,Gaus SA; Albert,Ígor CL; Melo,Edilaine A; Gusmão,Luciana O. The downy mildew, caused by Pseudoperonospora cubensis, is an important melon disease in Northeast Brazil. Considering the lack of standard methods for its assessment, a diagrammatic scale was developed with 2, 4, 8, 16, 32, 64, 82, and 96% of affected leaf area. The scale was then checked for its accuracy, precision, and reproducibility in estimating downy mildew severity. The diagrammatic scale was validated by eight disease raters; using 50 leaves with different severity levels, previously measured using the software Assess®. Two evaluations were performed on the same set of leaves, but in a different sequence order, by the same raters, within a 15-day interval. The accuracy and precision of each rater was determined by simple linear regression between... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucumis melo; Pseudoperonospora cubensis; Foliar disease; Epidemiology; Phytopatometry. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000100015 Diarrheagenic Escherichia coli BJM Gomes,Tânia A.T.; Elias,Waldir P.; Scaletsky,Isabel C.A.; Guth,Beatriz E.C.; Rodrigues,Juliana F.; Piazza,Roxane M.F.; Ferreira,Luís C.S.; Martinez,Marina B.. ABSTRACT Most Escherichia coli strains live harmlessly in the intestines and rarely cause disease in healthy individuals. Nonetheless, a number of pathogenic strains can cause diarrhea or extraintestinal diseases both in healthy and immunocompromised individuals. Diarrheal illnesses are a severe public health problem and a major cause of morbidity and mortality in infants and young children, especially in developing countries. E. coli strains that cause diarrhea have evolved by acquiring, through horizontal gene transfer, a particular set of characteristics that have successfully persisted in the host. According to the group of virulence determinants acquired, specific combinations were formed determining the currently known E. coli pathotypes, which are... Tipo: Info:eu-repo/semantics/article Palavras-chave: Escherichia coli; Diarrhea; Pathogenic mechanisms; Virulence factor; Epidemiology. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000500003 DIPNET - A European project to evaluate disease interactions and pathogen exchange between farmed and wild aquatic animal population fish, shellfish and crustaceans ArchiMer Miossec, Laurence; Garseth, A. H.; Midtlyng, P. J.; Raynard, R.; Peeler, E.; De Bals, I.. DIPNET (Disease Interaction and Pathogen exchange Network) is a co-ordination action funded under the UE Framework programme 6 priority 8 Scientific Support to Policy (SSP). The principal objective of DIPNET is to increase scientific knowledge of the potential transfer of pathogens and diseases between wild and farmed fish and shellfish populations. DIPNET started in October 2004 and is a 2 year project. The project is organized in four work packages. Work package (WP) 1 is focused on a literature review of disease interactions and pathogen exchange between farm and wild aquatic animals. This analysis includes both published and unpublished literature. The work covers a wide range of habitats and species within Europe and, where relevant, world-wide. WP1... Tipo: Text Palavras-chave: DIPNET; Crustaceans; Shellfish; Fish; Epidemiology; Risk assessment; Diseases; Transfer of pathogens. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3325.pdf Disease and Behavioral Dynamics for Brucellosis Control in Elk and Cattle in the Greater Yellowstone Area AgEcon Xie, Fang; Horan, Richard D.. This paper investigates private responses and ecological impacts of policies proposed to confront the problem of brucellosis being spread from elk to cattle in Wyoming. The policies consist of combinations of changes in elk feeding and population levels. Farmers’ responses to these dynamics are modeled along with the associated impacts to livestock population dynamics. Our findings suggest that feedbacks between jointly determined disease dynamics and decentralized economic behavior matter, and the elk feedgrounds do not actually generate economic harm to the individual farmers. Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomics; Disease ecology; Epidemiology; Replicator dynamics; Susceptible-infected-recovered (SIR) model; Wildlife disease; Wildlife feeding; Resource /Energy Economics and Policy. Ano: 2009 URL: http://purl.umn.edu/51707 Disease and Behavioral Dynamics for Brucellosis Control in Elk and Cattle in the Greater Yellowstone Area AgEcon Xie, Fang; Horan, Richard D.. This paper investigates private responses and ecological impacts of policies proposed to confront the problem of brucellosis being spread from elk to cattle in Wyoming. The policies consist of combinations of changes in elk feeding and population levels. Farmers' responses to these dynamics are modeled along with the associated impacts to livestock population dynamics. Our findings suggest that feedbacks between jointly determined disease dynamics and decentralized economic behavior matter, and the elk feedgrounds do not actually generate economic harm to the individual farmers. Tipo: Journal Article Palavras-chave: Bioeconomics; Brucellosis; Disease ecology; Epidemiology; Replicator dynamics; Susceptible-infected-recovered (SIR) model; Wildlife disease; Wildlife feeding; Livestock Production/Industries; Resource /Energy Economics and Policy. Ano: 2009 URL: http://purl.umn.edu/50165 Disease burden of chronic hepatitis C in Brazil BJID Ferreira,Paulo Roberto Abrão; Brandão-Mello,Carlos Eduardo; Estes,Chris; Gonçales Júnior,Fernando Lopes; Coelho,Henrique Sérgio Moraes; Razavi,Homie; Cheinquer,Hugo; Wolff,Fernando Herz; Ferraz,Maria Lúcia Gomes; Pessoa,Mário Guimarães; Mendes-Correa,Maria Cássia. Background: Hepatitis C virus infection is a major cause of cirrhosis; hepatocellular carcinoma; and liver transplantation. The aim of this study was to estimate hepatitis C virus disease progression and the burden of disease from a nationwide perspective.Methods: Using a model developed to forecast hepatitis C virus disease progression and the number of cases at each stage of liver disease; hepatitis C virus-infected population and associated disease progression in Brazil were quantified. The impact of two different strategies was compared: higher sustained virological response and treatment eligibility rates (1) or higher diagnosis and treatment rates associated with increased sustained virological response rates (2).Results: The number of infected... Tipo: Info:eu-repo/semantics/article Palavras-chave: HCV; Disease burden; Epidemiology; Incidence; Brazil. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000400363 Distribución espacial y factores de riesgo asociados a la leptospirosis bovina en Veracruz, México. Colegio de Postgraduados Cruz Romero, Anabel. Los objetivos de esta investigación fueron determinar la distribución espacial e identificar los factores de riesgo asociados a la leptospirosis bovina en el estado de Veracruz, México. Se obtuvieron muestras de sangre de 3,454 bovinos de 54 municipios de las regiones Norte, Centro y Sur del estado, de febrero 2008 a diciembre de 2011. Los sueros se analizaron por medio de la técnica de aglutinación microscópica utilizando 12 serovariedades de Leptospira interrogans, se estimaron las seroprevalencias y los factores de riesgo. La seroprevalencia general fue del 3.9%; sin embargo, entre municipios varió de 0 y 44%. La mayoría de las UP con casos positivos se encontraron en la zona centro de Veracruz, y en los municipios de Cuitláhuac, Papantla, Tlacotalpan... Palavras-chave: Estudio transversal; Bovinos; Serología; Epidemiología; Cross-sectional study; Bovines; Serology; Epidemiology; Agroecosistemas Tropicales; Doctorado. Ano: 2013 URL: http://hdl.handle.net/10521/2336 Distribuição e severidade da malformação da mangueira no cerrado do Brasil Central. Infoteca-e ANJOS, J. de R. N. dos; CHARCHAR, M. J. d'A.; PINTO, A. C. de Q.. bitstream/CPAC-2009/24680/1/doc_53.pdf Tipo: Documentos (INFOTECA-E) Palavras-chave: Fusarium sacchari; Controle; Plant disease; Mango; Patogenicity.; Doença de Planta; Epidemiologia; Fungo; Malformação; Manga; Mangifera Indica; Patogenicidade.; Epidemiology; Disease control; Fungi.. Ano: 2002 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/559182 Distribution and factors associated with Fasciola hepatica infection in cattle in the south of Espírito Santo State, Brazil J. Venom. Anim. Toxins incl. Trop. Dis. DP,Alves; MB,Carneiro; IVF,Martins; CC,Bernardo; DM,Donatele; Pereira Júnior OS,; BR,Almeida; BR,Avelar; AGC,Leão. Fasciolosis is a disease that affects the liver parenchyma and bile ducts of numerous animals, including humans, which causes economic losses and threatens public health. The present work aimed at reporting the distribution and factors connected with Fasciola hepatica infection in cattle in ten municipalities in southern Espírito Santo, Brazil, between 2008 and 2009. During this period, 50 rural properties in ten cities were analyzed and fecal samples from 10% of the cattle on each farm were collected. Of the 717 samples analyzed, 154 (21.33%) presented Fasciola hepatica eggs. As for the 50 rural properties studied, 32 (64%) had animals positive for fasciolosis. Throughout the evaluation, it was observed that 42 (84%) rural properties had flooded areas, 33... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fasciolosis; Epidemiology; Ruminants. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000300006 Distribution of filamentous fungi causing invasive fungal disease at the haematological unit, Hospital de Clínicas de Porto Alegre, Brazil BJID Aquino,Valério Rodrigues; Verçosa,Emanuelle Bergonsi; Falhauber,Gustavo; Lunardi,Luciano Werle; Silla,Lucia; Pasqualotto,Alessandro Comarú. Very limited data are available in the literature to elucidate the aetiology of invasive mould infections in Latin America. Here we report that Aspergillus species caused only half of such cases in a cohort study conducted over 21 months in a university hospital in Porto Alegre, Southern Brazil. Fusarium spp. were the second most prevalent moulds (20.7%), followed by Zygomycetes (13.8%). The importance of obtaining local epidemiological data for adequately guiding empirical antifungal therapy is reinforced. Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus; Fusarium; Mold infections; Epidemiology; Zygomycosis. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000300013 Distribution of serotypes and evaluation of antimicrobial susceptibility among human and bovine Streptococcus agalactiae strains isolated in Brazil between 1980 and 2006 BJID Pinto,Tatiana Castro Abreu; Costa,Natália Silva; Souza,Aline Rosa Vianna; Silva,Ligia Guedes da; Corrêa,Ana Beatriz de Almeida; Fernandes,Flavio Gimenis; Oliveira,Ivi Cristina Menezes; Mattos,Marcos Corrêa de; Rosado,Alexandre Soares; Benchetrit,Leslie Claude. Streptococcus agalactiae is a common agent of clinical and subclinical bovine mastitis and an important cause of human infections, mainly among pregnant women, neonates and nonpregnant adults with underlying diseases. The present study describes the genetic and phenotypic diversity among 392 S. agalactiae human and bovine strains isolated between 1980 and 2006 in Brazil. The most prevalent serotypes were Ia, II, III and V and all the strains were susceptible to penicillin, vancomycin and levofloxacin. Resistance to clindamycin, chloramphenicol, erythromycin, rifampicin and tetracycline was observed. Among the erythromycin resistant strains, mefA/E, ermA and, mainly, ermB gene were detected, and a shift of prevalence from the macrolide resistance phenotype... Tipo: Info:eu-repo/semantics/article Palavras-chave: Streptococcus agalactiae; Pulsed field gel electrophoresis; Epidemiology; Serotyping; Resistance profile. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200003 Distribution, prevalence, and genetic analysis of Panulirus argus virus 1 (PaV1) from the Caribbean Sea ArchiMer Moss, Jessica; Behringer, Donald; Shields, Jeffrey D.; Baeza, Antonio; Aguilar-perera, Alfonso; Bush, Phillippe G.; Dromer, Clement; Herrera-moreno, Alejandro; Gittens, Lester; Matthews, Thomas R.; Mccord, Michael R.; Schaerer, Michelle T.; Reynal, Lionel; Truelove, Nathanial; Butler, Mark J.. The pathogenic virus Panulirus argus virus 1 (PaV1) was first discovered in Caribbean spiny lobsters Panulirus argus from the Florida Keys (USA) in 1999 and has since been reported in Belize, Mexico, and Cuba; its distribution in the wider Caribbean is unknown. We collected tissue samples from adult spiny lobsters from 30 locations in 14 countries bordering the Caribbean Sea and used molecular diagnostics to assay for the presence of PaV1. PaV1 occurred primarily in the northern areas of the Caribbean, where its prevalence was highest. The virus was not found in lobsters from the southeastern Caribbean, and its prevalence was lowest in the southwestern Caribbean. DNA sequence analysis was performed on a fragment of the viral DNA to examine the genetic... Tipo: Text Palavras-chave: Spiny lobster; Disease; Epidemiology; Connectivity. Ano: 2013 URL: http://archimer.ifremer.fr/doc/00144/25503/23698.pdf Registros recuperados: 316 Primeira ... 1 2 3 4 5 6 7 8 9 ... Última

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