Addition of Duddingtonia flagrans chlamydospores to the concentrate feed can improve the successful of control measures against strongyle infection in horses

L.M. Madeira de Carvalho; M. Arias; F.M.A. Bernardo; P. Serra; C. Farrim; A. Paz-Silva

Addition of Duddingtonia flagrans chlamydospores to the concentrate feed can improve the successful of control measures against strongyle infection in horses

In: Forages and grazing in horse nutrition

Authors:

L.M. Madeira de Carvalho

L.M. Madeira de Carvalho ¹Interdisciplinary Research Centre on Animal Health, Faculty of Veterinary Medicine, Technical University of Lisbon, (CIISA, FMV, UTL), Pólo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal; madeiradecarvalho@fmv.utl.pt

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M. Arias

M. Arias ²Equine Diseases Study Group (COPAR, Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain 3Companhia das Lezírias, S.A., Lg. 25 de Abril, 17, 2135 Samora Correia, Portugal

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F.M.A. Bernardo

F.M.A. Bernardo ¹Interdisciplinary Research Centre on Animal Health, Faculty of Veterinary Medicine, Technical University of Lisbon, (CIISA, FMV, UTL), Pólo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal; madeiradecarvalho@fmv.utl.pt

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P. Serra

P. Serra ¹Interdisciplinary Research Centre on Animal Health, Faculty of Veterinary Medicine, Technical University of Lisbon, (CIISA, FMV, UTL), Pólo Universitário do Alto da Ajuda, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal; madeiradecarvalho@fmv.utl.pt

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C. Farrim

C. Farrim

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A. Paz-Silva

A. Paz-Silva ²Equine Diseases Study Group (COPAR, Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain 3Companhia das Lezírias, S.A., Lg. 25 de Abril, 17, 2135 Samora Correia, Portugal

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Type:: Chapter

Pages:: 433–436

DOI:: https://doi.org/10.3920/9789086867554_063

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The possibility to prevent strongyle infection in horses by adding chlamydospores of the nematophagous fungus Duddingtonia flagrans to the feed concentrate has been studied in four groups of Lusitano horses. Two groups were given a daily dosage of 5×10⁵ chlamydospores of D. flagrans together with the feed concentrate during 9 weeks: group 1 (G-1) composed of 9 colts maintained under a pasture regime, and group 3 (G-3) composed of adult (3-4 yr) stabled horses with regular access to grazing paddocks located nearby the barn. The other two groups received feed concentrate without spores: group 2 (G-2) composed of 9 grazing foals, and group 4 (G-4) composed of 7 adult stabled horses. Prior to the beginning of the study, the grazing animals were dewormed with a single dose of pyrantel pamoate, and the adult horses (stabled) treated with a dose of ivermectin. The effect of the chlamydospores was assessed by the Faecal Egg Count Reduction (FECR) and the Egg Reappearance Period (ERP). Strongyle-eggs were found in the stools of G-2 and G-4 throughout the study. The egg-shedding was suppressed 1 week after deworming (WAD) in G-3, and 2 WAD in G-1. A 100% FECR value was observed in the G-1 from 2 to 4 WAD, and then reduced to 0%. The FECR values ranged from 100% to 90% in G-3. The ERP was 5 weeks in G-1 and G-3. Significant differences in the FECR were obtained between G-1 and G-2, as well as between G-3 and G-4. Our results demonstrate that addition of D. flagrans spores to the feed concentrate can be useful to reduce the possibility of infection in horses. Further studies are needed to determine the appropriate dosage and frequency of administration of the chlamydospores.

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Forages and grazing in horse nutrition

Series: EAAP Scientific Series, Volume: 132

E-Book ISBN:: 9789086867554

Publisher:: Wageningen Academic

Print Publication Date:: 01 Nov 2012

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Addition of Duddingtonia flagrans chlamydospores to the concentrate feed can improve the successful of control measures against strongyle infection in horses

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Forages and grazing in horse nutrition

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