Field and Molecular Evaluation of Anthelmintic Resistance of Nematode Populations from Cattle and Sheep Naturally Infected Pastured on Mixed Grazing areas at Rio Grande do Sul, Brazil

2019 ◽  
Vol 65 (1) ◽  
pp. 118-127
Author(s):  
Fernanda Ramos ◽  
Camila Balconi Marques ◽  
Caroline Zamperete Reginato ◽  
Patricia Bräunig ◽  
Vanessa Osmari ◽  
...  
Keyword(s):  
Anthelmintic Resistance ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Molecular Evaluation ◽  
Cattle And Sheep

scholarly journals Multiple anthelmintic resistance in Southern Brazil sheep flocks

2017 ◽  
Vol 26 (4) ◽  
pp. 427-432 ◽  
Author(s):  
Plínio Aguiar de Oliveira ◽  
Beatriz Riet-Correa ◽  
Pablo Estima-Silva ◽  
Ana Carolina Barreto Coelho ◽  
Bianca Lemos dos Santos ◽  
...  
Keyword(s):  
Anthelmintic Resistance ◽  
Rio Grande ◽  
Gastrointestinal Parasites ◽  
Southern Region ◽  
Parasitic Infections ◽  
Southern Brazil ◽  
Parasite Control ◽  
Rio Grande Do Sul ◽  
Parasitic Resistance ◽  
The Common

Abstract Gastrointestinal parasites represent an important cause of reduced productivity of sheep worldwide. As anthelmintic are still the main control tool for these parasites, this work evaluated the efficacy of commercially available active principles in 22 sheep flocks in the southern region of Rio Grande do Sul, Brazil. In each farm 10 sheep were randomly distributed in seven groups with the following treatments: abamectin; albendazole; closantel; levamisole; monepantel; trichlorphon and no anthelmintic (control). All flocks showed resistance to at least three anthelmintics and in 20 farms only two products demonstrated efficacy for parasitic control. In two farms, there was no susceptibility to the six active principles tested. The results of this study provide evidence that the common commercially available anthelmintic are not assuring effective chemical control of gastrointestinal parasitic infections in ovine flocks in the southern region of Rio Grande do Sul. Monepantel, the newest introduced drug in the Brazilian market was not effective in 18% of the flocks tested, confirming that the parasitic resistance can be established quickly after the introduction of new molecules mainly when alternative program of parasite control is not performed.

scholarly journals Assessment of the efficacy of commercial anthelmintics in horses naturally infected with gastrointestinal nematodes

2021 ◽  
Vol 15 (1) ◽  
pp. 28-32
Author(s):  
Natália Soares Martins ◽  
Diego Moscarelli Pinto ◽  
Laís Leal da Cunha ◽  
Júlia Somavilla Lignon ◽  
Thais Cozza dos Santos ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Lower Limit ◽  
Anthelmintic Resistance ◽  
Rio Grande ◽  
Gastrointestinal Nematodes ◽  
Southern Region ◽  
Rio Grande Do Sul ◽  
Fecal Egg Count ◽  
Anthelmintic Efficacy ◽  
South Of Brazil

The objective of this study was to assess the efficacy of commercial anthelmintics in horses naturally infected with gastrointestinal nematodes from the southern Rio Grande do Sul state, Brazil. The anthelmintic efficacy was assessed by fecal egg count reduction test (FECRT) and coproculture. Fecal samples were collected from 110 animals in seven farms located in the southern region of the state of Rio Grande do Sul, in the south of Brazil. Criteria used to suspect anthelmintic resistance included percentages of efficacy lower than 95% and a lower limit of the confidence interval below 90%. Anthelmintic resistance was detected in five of the seven farms studied. Coproculture results show that, even after horses were treated with anthelmintics, infection by nematodes of the subfamily Cyathostominae was still present in animals from five farms.

scholarly journals Resistance to monepantel in multiresistant gastrointestinal nematodes in sheep flocks in Rio Grande do Sul

2018 ◽  
Vol 39 (5) ◽  
pp. 2059 ◽  
Author(s):  
Pedro Marino Mallmann Júnior ◽  
Raquel Fraga e Silva Raimondo ◽  
Beatriz Riet Correa Rivero ◽  
Luiza Rodegheri Jacondino ◽  
Andressa Silveira Gonçalves ◽  
...  
Keyword(s):  
Anthelmintic Resistance ◽  
Rio Grande ◽  
Gastrointestinal Nematodes ◽  
Control Measures ◽  
Current Status ◽  
Active Principle ◽  
Rio Grande Do Sul ◽  
Parasite Resistance ◽  
Fecal Samples ◽  
Anthelmintic Drugs

The excessive, indiscriminate, and continued use of anthelmintic drugs as control methods favors parasite resistance, and this phenomenon has been reported in Brazil and worldwide. The current status of parasite resistance to anthelmintic drugs in sheep flocks in Rio Grande do Sul was assessed by calculating the EPG count in the stool to estimate the prevalence of resistance to the anthelmintic drugs closantel, levamisole, fenbendazole, monepantel, and moxidectin in seven properties. The animals from each flock were randomly distributed in six groups according to the anthelminthic drug used, as follows: T1, levamisole; T2, fenbendazole; T3, monepantel; T4, moxidectin; T5, closantel; and T6, control. On day zero, fecal samples were collected, and each animal was treated with one anthelminthic drug. Fecal samples were collected again after 14 days to calculate the efficacy of each active principle. Coproculture was performed using a pool of fecal samples from each group on day 0 and 14 to identify the predominant genera and prevalence of helminths. The genera identified in the coprocultures were Haemonchus, Trichostrongylus, Oesophagostomum, and Teladorsagia. All flocks developed resistance to levamisole, fenbendazole, moxidectin, and closantel. Moreover, resistance to monepantel was found in four of the seven farms. These results demonstrate the critical situation of anthelmintic resistance in sheep flocks in Rio Grande do Sul and the need to adopt other integrated control measures in addition to anthelmintic treatment.

scholarly journals Anthelmintic resistance in gastrointestinal nematodes of beef cattle in the state of Rio Grande do Sul, Brazil

2016 ◽  
Vol 6 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Fernanda Ramos ◽  
Luiza Pires Portella ◽  
Fernando de Souza Rodrigues ◽  
Caroline Zamperete Reginato ◽  
Luciana Pötter ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Anthelmintic Resistance ◽  
Rio Grande ◽  
Gastrointestinal Nematodes ◽  
The State ◽  
Rio Grande Do Sul

scholarly journals Anthelmintic resistance in Creole horses in the South of Rio Grande do Sul, Brazil

2021 ◽  
Vol 73 (3) ◽  
pp. 598-604
Author(s):  
J.S. Lignon ◽  
N.F. Gonçalves ◽  
L.L. Cunha ◽  
T.A. Antunes ◽  
M.S. Leão ◽  
...  
Keyword(s):  
Anthelmintic Resistance ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
The South ◽  
Fecal Egg Count ◽  
Anthelmintic Efficacy ◽  
Stool Samples ◽  
Antiparasitic Drugs ◽  
Veterinary Faculty ◽  
Antiparasitic Agents

ABSTRACT The objective of the study was to evaluate the antiparasitic resistance against horse nematodes in the South of Rio Grande do Sul, Brazil. The results concerning the tests of anthelmintic efficacy on horses, stored in the database of the Parasitic Diseases Study Group (GEEP) - Veterinary Faculty, at the Federal University of Pelotas (UFPel), were carried out in the laboratory from 2018 to 2019. Stool samples were received from farms with breeding of adult female and male Criollo horses naturally infected, located in municipalities in the country’s southern region. The antiparasitic agents tested were Triclorfon + Fenbendazole, Closantel + Albendazole, Ivermectin + Praziquantel, Fenbendazole, Ivermectin, Doramectin, Mebendazole and Moxidectin. Techniques such as Gordon and Whitlock, Coproculture and Fecal Egg Count Reduction Test were performed. Of all the antiparasitic drugs tested, it was observed that only treatments with Ivermectin 2% showed desired values. The observed results indicate that resistance to macrocyclic lactones is usual in equine parasites in this Brazilian region, despite the results with isolated Ivermectin.

Estudo da Dispersão do Monóxido de Carbono Associado a Emissão Veicular na Região Metropolitana de Porto Alegre com o Sistema de Modelagem Numérica CCATT - BRAMS

2020 ◽  
Author(s):  
Karen Leandra ávila da Silva ◽  
Marcelo Félix Alonso ◽  
Sabrina Feltes de Moura ◽  
Túlio Felipe Verdi Filho
Keyword(s):  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Porto Alegre

Resumo O monitoramento contínuo da qualidade do ar local é extremamente importante para a gestão ambiental de uma cidade, mas nem sempre viável pelo alto custo dos equipamentos. Por conta disso, investe-se muito na utilização da modelagem numérica no estudo da qualidade do ar, que é altamente dependente de inventários de emissões dos poluentes e seus precursores. Nesse contexto o objetivo deste trabalho foi realizar um estudo da dispersão do monóxido de carbono (CO) na Região Metropolitana de Porto Alegre, no estado do Rio Grande do Sul, utilizando o sistema de modelagem numérica CCATT-BRAMS, com ênfase nas fontes veiculares. Foram analisados dois períodos - janeiro de 2009 e janeiro de 2016 - utilizando-se as informações dos inventários de gases precursores elaborados pela FEPAM para os anos base de 2009 e 2013, respectivamente, distribuídos espacialmente com o auxílio do pré-processador de emissões PREP-CHEM-SRC utilizado pelo CCATT-BRAMS. No geral, as simulações representaram coerentemente os dados observados pela rede de monitoramento, com RMSE abaixo de 0,3 na maioria das estações avaliadas. Análises de sensibilidade também revelaram que, para o período avaliado, aproximadamente 40% da concentração de CO sobre a cidade de Porto Alegre foi devido ao transporte de larga escala, proveniente das cidades localizadas ao norte, dentro da Região Metropolitana.

CONTRIBUIÇÃO AO CONHECIMENTO DA AVIFAUNA DO MUNICÍPIO DE TAQUARA, RIO GRANDE DO SUL

2019 ◽  
Vol 2 ◽  
pp. 28
Author(s):  
Marcelo Pereira de Barros ◽  
Ana Paula Lima da Silveira ◽  
Bruna Reis Ferreira
Keyword(s):  
Rural Areas ◽  
Rio Grande ◽  
Bird Community ◽  
Frequency Of Occurrence ◽  
Diverse Group ◽  
Rio Grande Do Sul ◽  
Natural Ecosystems ◽  
Environmental Disturbances ◽  
Environmental Pressures ◽  
Hydrographic Basin

As aves destacam-se dentro dos vertebrados por serem um grupo diverso e adaptado a diferentes ambientes, a composição da comunidade de aves de um determinado local é um importante bioindicador ambiental, pois ela reflete alterações recentes ou pretéritas de determinada área. Na Bacia Hidrográfica do Rio dos Sinos, as pressões sobre os remanescentes de ecossistemas naturais são intensas em decorrência da urbanização crescente, do estabelecimento de indústrias e da ampliação das fronteiras agrícolas, esses fatores associados geram a redução e fragmentação de habitats, com impactos irrecuperáveis para a flora e a fauna. Devido à escassez de dados sobre a avifauna do município de Taquara, o presente estudo teve como objetivo levantar informações sobre o grupo, listando as espécies de aves locais. Entre agosto de 2016 e junho de 2017 foram realizadas quatro amostragens mensais em duas áreas rurais do município, totalizando 44 campanhas de observação e 132 horas de esforço amostral. As espécies foram identificadas e classificadas conforme sua frequência de ocorrência mensal, em espécies comuns e raras. Foram registradas 133 espécies distribuídas em 47 famílias, o que representa mais de 20% das espécies ocorrentes para o estado. Ao longo do período amostrado, 90 espécies foram classificadas como comuns e 47 consideradas raras para as áreas pesquisadas.Palavras-chave: Aves. Bacia hidrográfica do Rio dos Sinos. Preservação.ABSTRACTBirds stand out within vertebrates because they are a diverse group adapted to different environments. The composition of the bird community of a certain place is an important environmental bioindicator since it reflects recent or previous environmental disturbances of a certain area. In the Sinos River Basin, environmental pressures on the remnants of natural ecosystems are intense as a result of increasing urbanization, the establishment of industries and expansion of agricultural frontiers which generate habitat reduction and fragmentation with irrecoverable damages on flora and fauna. Due to the scarcity of data on the avifauna of the municipality of Taquara, the present study aimed to gather information and list the species of local birds. Between August 2016 and June 2017, four monthly samplings were carried out in two rural areas of the municipality, totaling 44 observation campaigns and 132 hours of sample effort. The species were identified and classified as common and rare according to their frequency of occurrence. There were 133 species distributed in 47 families, representing more than 20% of the species that occurred in the state. During the sampled period, 90 species were classified as common and 47 were considered rare for the areas surveyed.Keywords: Birds. Hydrographic basin of Sinos River. Preservation.

Uma base de dados para membros de carreiras técnicas: estudo sobre os promotores públicos do Rio Grande do Sul (1930-1964)

2019 ◽  
Vol 5 (10) ◽  
pp. 376
Author(s):  
Marcelo Vianna
Keyword(s):  
Rio Grande ◽  
Rio Grande Do Sul

O presente artigo visa a apresentar o uso de recursos informatizados na produção de uma pesquisa histórica relacionada à formação do Ministério Público do Rio Grande do Sul e os perfis de seus agentes públicos entre os anos de 1930 e 1964. Nosso objetivo é discutir o processo de organização de uma base de dados aplicada para o problema de pesquisa, envolvendo o levantamento de fontes e definição de registros assim como os recursos aplicados na análise de dados. Por fim, serão apresentadas algumas análises a partir dos resultados extraídos da base de dados, de modo a demonstrar as contradições entre o modelo de promotor público defen- dido pela instituição e os indivíduos que nela atuavam.

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