An Overview of Anthelmintic Resistance in Domestic Ruminants in Brazil
2023
Lucia Oliveira Macedo | Samuel Souza Silva | Leucio Câmara Alves | Gílcia Aparecida Carvalho | Rafael Antonio Nascimento Ramos
Gastrointestinal nematodes (GIN) significantly, negatively impact livestock worldwide, and their control depends on the use of chemotherapy drugs. However, this approach is unsustainable as anthelmintic resistance (AR) is growing widespread. This article provides a comprehensive overview of the historical and current data published on AR in domestic ruminants in Brazil. Alternative measures of GIN control have been discussed to provide helpful information to prevent the development of AR in the country. This review consisted of a search of technical and scientific publications between January 1960 to January 2023, using online sources such as PubMed, Scielo and Google Scholar. Eighty-three articles published over the last six decades reporting AR in sheep (<i>n</i> = 43), goats (<i>n</i> = 20) and cattle (<i>n</i> = 20) were included. A total of 37.3%, 25.4% and 37.3% evaluated one, two and three or more molecule classes, respectively. Among all studies, 82.1% used fecal egg count reduction test as a method of AR diagnosis. In conclusion, AR is an urgent and emerging issue for ruminant production in Brazil. It is necessary to evaluate on a large scale the distribution and management of anthelmintic drugs and discuss strategies that delay this phenomenon’s development.
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