Evaluation of reduction in egg shedding of gastrointestinal nematodes in cattle following administration of anthelmintics

Soutello, Ricardo Velludo Gomes de; Coelho, Wilian Marinho Dourado; Oliveira, Fernando Paes de; Fonzar, José Francisco; Luquetti, Brenda Carla; Souza, Renata Furlan Pereira de; Seno, Maria Conceição Zocoller; Amarante, Alessandro Francisco Talamini do

doi:10.1590/s1984-29612010000300011

Cited by 9 publications

(5 citation statements)

References 8 publications

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“…Low efficiency at a lowest dosage of ivermectin in this study was reported by Fazzio et al (2012) in Argentina, who observed an RFEC rate of 28.4%, 22 days after the treatment of calves, while Soutello et al (2010) reported that the highest RFEC (72.2%) was observed 3 days after treatment and for 28 days thereafter, which was evaluated after administration of 1% ivermectin. On the Santa Catarina plateau, 18% of the cattle had an efficacy greater than 95% and 5% and less than 14% (SOUZA et al, 2008).…”

Section: Introductioncontrasting

confidence: 40%

“…It was not possible to assess the effectiveness of ivermectin in the genus Strongyloides, since this genus was not observed in the control group (Table 2). Efficiency % = (LPG mean of X from control group in 10 day -LPG mean of X from treated group in 10 day) × 100 LPG mean of X from control group Similarly, Souza et al (2008) and Soutello et al (2010) described the inefficiency of ivermectin in Cooperia and Haemonchus, while Rangel et al (2005) showed the same in the genus Oesophagostomum. Cezar et al (2010) reported 100% efficacy of ivermectin 3.15% in Oesophagostomum.…”

Section: Introductionmentioning

confidence: 99%

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Resistance of Haemonchus, Cooperia, Trichostrongylus, and Oesophagostomum to ivermectin in dairy cattle in Paraná

et al. 2015

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The objective of this study was to analyze the effect of ivermectin (3.15%) on gastrointestinal nematodes found in calves through the fecal egg count reduction test (FECRT), and larval culture in 16 animals from a school farm at the Universidade Estadual do Norte do Paraná. The animals were divided into two experimental groups: animals treated with ivermectin 3.15% (G1 group) and control animals (G2 group). Stool samples were collected from the animals twice i.e., on days 0 and 10 for fecal examinations. There was no significant change in the egg count per gram of feces (EPG) in both the groups. Helminths were found to be resistant to ivermectin (3.15%), due to the observed 5.62% FECRT rate. Cooperia was found to be the dominant nematode larvae present (53% on day 10 day and 8% in day 0), while Trichostrongylus was detected in small numbers (0% on day 0 to 1 % on day 10). The drug was found to be effective only in Trichuris, while the same was inefficient against Haemonchus and Cooperia, although Trichostrongylus and Oesophagostomum were found to be 100 % resistant. Therefore, the findings of this study suggest that ivermectin 3.15% should not be used for the control of nematodes in calves, since most of the parasites demonstrated drug resistance. This is the first report on the resistance of Haemonchus, Cooperia, Trichostrongylus, and Oesophagostomum in cattle to ivermectin 3.15% in the state of Paraná. Key words: Anthelmintic resistance, bovine, macrocyclic lactone ResumoObjetivou-se, neste estudo, analisar o efeito da ivermectina (3,15%) sobre nematódeos gastrointestinais de bezerros com aptidão leiteira por meio do Teste de Redução na Contagem de Ovos nas Fezes (RCOF) e da cultura de larvas em 16 animais da Fazenda Escola da Universidade Estadual do Norte do Paraná. Para tanto, dois grupos experimentais foram formados: animais tratados com ivermectina 3,15% (grupo G1) e grupo controle (Grupo G2). Foram coletadas amostras de fezes dos animais em dois momentos, ou seja, nos dias 0 e 10 para realização dos exames coproparasitológicos. Não houve alteração significativa na contagem de ovos nas fezes (OPG) em ambos os grupos. Os helmintos foram considerados resistentes à ivermectina 3,15%, já que a taxa de RCOF foi de 5,62%. O gênero de nematódeo mais observado na cultura de larvas foi Cooperia (53% no dia 10 a 88% no dia zero) e o menos foi Trichostrongylus (0% no dia zero a 1% no dia 10). Observou-se eficiência apenas sobre o gênero Trichuris e ineficiência sobre os gêneros Haemonchus e Cooperia e ainda 100% de resistência dos gêneros Oesophagostomum e Trichostrongylus. Concluiu-se neste estudo que a ivermectina 3,15% não deve ser indicada no controle de

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Section: Introductioncontrasting

confidence: 40%

Section: Introductionmentioning

confidence: 99%

Resistance of Haemonchus, Cooperia, Trichostrongylus, and Oesophagostomum to ivermectin in dairy cattle in Paraná

et al. 2015

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“…This study is an integrative literature review, aimed at synthesizing the existing knowledge, which allows not only analyzing the studies already built, but also generating openings for new research (Souza et al, 2010). The articles were located by online search engines of the following platforms: Scientific Electronic Library (https://scielo.org); Journal Portal Capes (https://www.periodicos.capes.gov.br) and Google Scholar (http://scholar.google.com) in the period from September 2021 (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

“…This causes it to compromise the maintenance of refugia and the effectiveness of treatments (Soutello, 2010). Becoming even more important with the launch of several endectocidal products on the market, this drug has actions on several internal parasites of animals (Nascimento, 2003).…”

Section: Anthelmintic Resistance In Cattlementioning

confidence: 99%

Prophylaxis of helminths in cattle in Brazil

Carmo

Mena

Cipriano

et al. 2022

RSD

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Cattle ranching in Brazil has long been one of the main and most important sectors of the economy. Among the factors that negatively influence the rearing of production animals, the worm disease deserves prominence, because it is one of the most important problems of the Brazilian herd, being responsible for large losses in livestock activity. Worms are caused by helminths of different phyla, classes, genera and species, and can affect several animals, being extremely important in production animals. These parasites can cause losses and great economic losses due to the fall in animal production and costs with its control. The administration of anthelmintics in the correct dosage is of great importance, because its misuse is probably one of the causes that accelerate the emergence of resistant helminth populations. However, when done incorrectly and indiscriminately, it can lead to inefficiency of the drugs because with the wrong management of these drugs there is a selection of resistant parasites. In view of the above, the objective of this literature review was to gather information on ways to control helminthiases and some alternatives that have been studied to improve livestock production systems. Keywords: Anthelmintics; Helminths; Nematodes.

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“…For many years, anthelmintics were effective in controlling intestinal parasites in ruminants. However, one consequence of the widespread use of these drugs has been the emergence of resistant nematodes, a problem that is widespread in the sheep farming systems worldwide (Lopes et al, 2009;Palcy et al, 2010;Soutielo et al, 2010;Almeida et al, 2013).…”

Section: Known Anthelmintic Resistance In Ruminants and Its Diagnosismentioning

confidence: 99%

Aspects of epidemiology and control of gastrointestinal nematodes in sheep and cattle – Approaches for its sustainability

Bresciani¹,

Coelho²,

Gomes³

et al. 2017

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A B S T R A C TGastrointestinal helminthosis in ruminants cause considerable economic losses, with marked impairment of productivity of these animals, especially in poor management systems and poor parasite control programs. Infections caused by these helminths represent an obstacle to the expansion of the sheep industry. Furthermore, high parasite burdens were associated with increased mortality in calves. The recommended methods for the control of gastrointestinal helminths not always have practical applicability. We discuss important epidemiological and control aspects concerning gastrointestinal nematodes in sheep and cattle. Thus, sustainable worm control practices are recommended. Each farm has a specific situation and a management system directed to a specific parasitic infection must be adopted.Keywords: cattle, sheep, gastrointestinal helminths, epidemiology, control, sustainability. R E S U M OHelmintíases gastrintestinais em ruminantes acarretam perdas econômicas relevantes, com marcante prejuízo da produção animal, especialmente em sistemas de maneio precários e em programas de controle parasitário deficientes. Infeções causadas por esses helmintos representam um obstáculo para a expansão do mercado ovino. Ademais, altas cargas parasitárias foram associadas à elevada mortalidade em bezerros. Os métodos recomendados para o controle de helmintos gastrintestinais nem sempre apresentam aplicação prática. Nós discutimos os aspectos importantes sobre nematodes gastrintestinais em ovinos e caprinos. Sendo assim, práticas de controle sustentáveis são recomendadas. Cada propriedade possui uma situação em particular e um sistema de maneio direcionado deve ser adotado para as infecções parasitárias específicas.Palavras -chave: bovinos, ovinos, helmintos gastrintestinais, epidemiologia, controlo, sustentabilidade. 665Bresciani et al., Gastrointestinal nematodes in sheep and cattle

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Evaluation of reduction in egg shedding of gastrointestinal nematodes in cattle following administration of anthelmintics

Cited by 9 publications

References 8 publications

Resistance of Haemonchus, Cooperia, Trichostrongylus, and Oesophagostomum to ivermectin in dairy cattle in Paraná

Resistance of Haemonchus, Cooperia, Trichostrongylus, and Oesophagostomum to ivermectin in dairy cattle in Paraná

Prophylaxis of helminths in cattle in Brazil

Aspects of epidemiology and control of gastrointestinal nematodes in sheep and cattle – Approaches for its sustainability

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