Efficacy of Duddingtonia flagrans (Bioverm®) on the biological control of buffalo gastrointestinal nematodes.

Autor: Mendes LQ; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Ferraz CM; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Ribeiro NRC; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Ulfeldt KB; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Ribeiro JCC; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Merizio MF; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Rossi GAM; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil., Aguiar AARM; Department of Veterinary Medicine, Instituto Federal da Paraíba - IFPB, Sousa, Paraíba, Brazil., Araújo JV; Departament of Veterinary, Universidade Federal de Viçosa - UFV, Viçosa, Minas Gerais, Brazil., Soares FEF; Departament of Chemistry, Universidade Federal de Lavras - UFLA, Lavras, Minas Gerais, Brazil., Vilela VLR; Department of Veterinary Medicine, Instituto Federal da Paraíba - IFPB, Sousa, Paraíba, Brazil. Electronic address: vinicius.vilela@ifpb.edu.br., Braga FR; Department of Veterinary Medicine, Universidade Vila Velha - UVV, Vila Velha, Espírito Santo, Brazil.
Jazyk: angličtina
Zdroj: Experimental parasitology [Exp Parasitol] 2023 Oct; Vol. 253, pp. 108592. Date of Electronic Publication: 2023 Aug 05.
DOI: 10.1016/j.exppara.2023.108592
Abstrakt: We evaluated the efficacy of Bioverm®, a commercial product containing Duddingtonia flagrans, on the control of buffalo (Bubalus bubalis) gastrointestinal nematodes. We randomly divided 12 buffaloes into two groups of six animals. In the treated group, each animal received a Bioverm®`s single dose of 1g (10 5 chlamydospores of D. flagrans) to 10 kg of live weight; in the control group, each animal received 1g of corn bran for each 10 kg of live weight as a placebo. Fecal samples were individually collected from 12, 24, 36, 48, 60 and 72 h after treatments. To examine 1) viability of chlamydospores passed through the gastrointestinal tract, 2 g of faeces and 1000 infective larvae (L3) were added to Petri dishes with 2% water-agar, and 2) to examine larval predation by D. flagrans during fecal cultures, 2000 L3 were added. In the Petri dishes, were observed significant reductions (p < 0.01) in the treated group after 48 (56.7%) and 60 h (91.5%). In the fecal cultures, significant reductions (p < 0.01) occurred in the treated group from 36 h (75%), with larval reduction up to 72 h. High larval predation rate occurred 60 h after Bioverm® administration. Bioverm® maintained viability and predation capacity after passage through the buffalo's gastrointestinal tract, showing efficacy on gastrointestinal nematodes.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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