Effect of Duddingtonia flagrans chlamydospores on the control of parasite infection in grazing horses

Cazapal-Monteiro C.; M. Arias; J. Suárez; M.I. Rodríguez; I. Francisco; F.J. Cortiñas; L.M. Madeira de Carvalho; R. Sánchez-Andrade; A. Paz-Silvạ

Effect of Duddingtonia flagrans chlamydospores on the control of parasite infection in grazing horses

In: Forages and grazing in horse nutrition

Authors:

Cazapal-Monteiro C.

Cazapal-Monteiro C. ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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M. Arias

M. Arias ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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J. Suárez

J. Suárez ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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M.I. Rodríguez

M.I. Rodríguez ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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I. Francisco

I. Francisco ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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F.J. Cortiñas

F.J. Cortiñas ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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L.M. Madeira de Carvalho

L.M. Madeira de Carvalho ²Centro de Investigação Interdisciplinar em Saúde Animal, Parasitologia e Doenças Parasitárias, Faculdade de Medicina Veterinária, Universidade Técnica de Lisboa (CIISA/FMV/UTL), Pólo Universitário do Alto, Avenida da Universidade Técnica, 1300 Lisboa, Portugal

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R. Sánchez-Andrade

R. Sánchez-Andrade ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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A. Paz-Silvạ

A. Paz-Silvạ ¹Equine Diseases Study Group (Epidemiology, Parasitology and Zoonoses), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002 Lugo, Spain; adolfo.paz@usc.es

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Type:: Chapter

Pages:: 419–423

DOI:: https://doi.org/10.3920/9789086867554_061

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The area of abandoned pastures has increased over the last few decades because dairy farms are struggling to survive. This constitutes a serious problem, because the presence of flammable biomass in the environment has increased, and with it the risk of fire. A possible solution has been found in grazing horses that are kept in abandoned and previously cultured grasslands, providing feed and keeping the vegetation under control. However, this regime also enhances the risk of infection by different parasites, responsible for reduced activity on the forage, low fecundity indexes, etc. Two groups of 8 PRG autochthonous horses were maintained in 2 fenced 1 ha-plots. Chlamydospores of the nematophagous fungus Duddingtonia flagrans were directly spread on the soil in one paddock (P1). The other group of horses was maintained in a paddock without spores (P2). Before introduction to the paddocks, horses were dewormed by the topical application of ivermectin at a 1 mg kg/bw dosage (Noromectin®, Norbrook, Ireland). The presence of infective parasitic larvae in the environment was determined by assessing the excretion of nematode eggs in the faeces. The horses became infected again 2 months after their introduction to the paddocks. Chemotherapy was needed in the 3rd month in P2, and after 4 months in P1. These results underline the need for appropriate measures against the parasitic infective stages in the environment. Direct spreading of chlamydospores onto the soil can achieve a very beneficial effect by reducing the quantity of these larvae and hence the risk of infection in grazing horses.

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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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Effect of Duddingtonia flagrans chlamydospores on the control of parasite infection in grazing horses

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Forages and grazing in horse nutrition

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