Efficacy Evaluation of a Commercial Formulation With Duddingtonia Flagrans in Equine Gastrointestinal Nematodes

•Duddingtonia flagrans (D. Flagrans) predates Cyathostomum sp. larvae in horse feces.•A commercial formulation of the fungus D. flagrans reduced larvae in vitro.•The reduction was up to 57.20% when applied directly to equine feces. The indiscriminate use of antiparasitics for the treatment of helmin...

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Bibliographic Details
Published in:Journal of equine veterinary science 2023-12, Vol.131, p.104930, Article 104930
Main Authors: Nunes, Gabriela Tormes, Corrêa, Diego Cristiano, Chitolina, Maysa Bigolin, da Rosa, Gilneia, Pereira, Roberta Carneiro da Fontoura, Cargnelutti, Juliana Felipetto, Vogel, Fernanda Silveira Flôres
Format: Article
Language:English
Subjects:
Animals
Ascomycota
Coproculture
Cyathostomum sp
Feces - microbiology
Helminthophagous fungi
Horse Diseases - therapy
Horses
Larval reduction
Nematoda - microbiology
Nematode Infections - parasitology
Nematode Infections - therapy
Nematode Infections - veterinary
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Summary:•Duddingtonia flagrans (D. Flagrans) predates Cyathostomum sp. larvae in horse feces.•A commercial formulation of the fungus D. flagrans reduced larvae in vitro.•The reduction was up to 57.20% when applied directly to equine feces. The indiscriminate use of antiparasitics for the treatment of helminths in horses has caused the ineffectiveness of commonly used chemical active principles, therefore, new alternatives such as the use of helminthophagous fungi have been studied. In this context, this study aimed to evaluate the in vitro efficacy of the commercial formulation Bioverm, composed of the fungus Duddingtonia flagrans strain AC001, in the reduction of gastrointestinal nematode larvae in equine feces. In coproculture, the genus Cyathostomum sp. was the most prevalent in the analyzed samples. The commercial formulation with D. flagrans demonstrated effectiveness in the predation of Cyathostomum sp. in tests. The recommended dose of 0.4 g, containing 105 chlamydospores per gram of product, reduced larvae by 44.23%, while the extrapolated dose of 1.0 g with the same concentrations of chlamydospores (105/g) resulted in a reduction of 57.20%, indicating the effectiveness of the product in controlling infective larvae.
ISSN:0737-0806
1542-7412
DOI:10.1016/j.jevs.2023.104930