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BioMed Research International
Volume 2018, Article ID 2934674, 6 pages
https://doi.org/10.1155/2018/2934674
Research Article

Coadministration of Nematophagous Fungi for Biological Control over Nematodes in Bovine in the South-Eastern Brazil

1Department of Veterinary Medicine, Laboratory of Parasitology, Federal University of Viçosa, Av. P.H. Rolphs, Viçosa Campus, 36570-000 Viçosa, MG, Brazil
2Department of Veterinary Medicine, University Vila Velha, Avenue Comissário José Dantas de Melo, 21, Boa Vista, 29102-920 Vila Velha, ES, Brazil

Correspondence should be addressed to Rafaela Carolina Lopes Assis; rb.moc.oohay@sissasepolaleafar

Received 13 October 2017; Revised 19 January 2018; Accepted 20 February 2018; Published 26 March 2018

Academic Editor: Juan F. J. Torres-Acosta

Copyright © 2018 Fábio Dias Luns et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study compared the coadministration among the three nematode predatory fungi, Duddingtonia flagrans, Monacrosporium thaumasium, and Arthrobotrys robusta, in the biological control of cattle gastrointestinal nematodiasis in comparison with the use of the fungus D. flagrans alone. Five groups consisting of eight Girolando heifers were kept in paddocks of Brachiaria decumbens for six months. Each heifer received 1 g/10 kg of pellets containing the fungi (0.2 g of fungus/10 kg b.w.). Group 1 (G1) received pellets with D. flagrans and M. thaumasium in coadministration, G2 received D. flagrans and A. robusta, G3 received M. thaumasium, A. robusta, and D. flagrans, and G4 received the fungus D. flagrans alone. Group 5 (control) received pellets without fungi. The monthly mean of fecal egg count (FEC) of Groups 1, 2, 3, and 4 were 93.8, 85.3, 82.7, and 96.4% smaller than the mean of control group. The treatments with pellets containing D. flagrans or D. flagrans + M. thaumasium produced significantly better results than the D. flagrans + A. robusta or the combination of the three fungi. The associations which include A. robusta were less efficient in this study than D. flagrans alone or associated with M. thaumasium.