AAEP Annual Convention Anaheim 2012
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Biological Control of Strongyles Affecting Equids

Author(s):

M. Arias, C. Cazapal-Monteiro, E...

In: AAEP Annual Convention - Anaheim, 2012 by American Association of Equine Practitioners
Updated:
DEC 05, 2012
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The current investigation deals with the need for improving and progressing in the control of strongyles affecting equids maintained in zoological parks.

1. Introduction

The main goal in this research was to determine the beneficial effect of incorporating biological procedures into the parasite control programs applied on equids from zoological parks; this will allow preventing the reinfection of the equids.

2. Materials and Methods

Two trials have been developed on Equus quagga (three zebras), Equus asinus (six European donkeys), and Equus africanus asinus (six African Wild Ass). The first consisted of chemotherapy only and the second in the administration of chemotherapy and chlamydospores of the nematophagous fungus Duddingtonia flagrans. The effect of these measures was evaluated by the estimation of the reduction in the fecal egg counts (FECR) and in the number of equids positive to the coprology (PER). 

3. Results

Chemotherapy provided FECR values of 100%, 15 days after treatment in all the animals. In the first trial, an egg reappearance period of 2 months for the donkeys and 3 months for the zebras was observed. In the second experiment, the egg reappearance period was 3 months for the European donkeys and 4 months for the African asses; no strongyle egg output was observed in the zebras.

4. Discussion

The incorporation of chlamydospores of nematophagous fungus such as D. flagrans reveals a very efficient measure to contribute for the infective stages of the strongyles diminish. It is concluded that biological control measures provide very useful ways of integration of ecological and sustainable procedures for the care of captive animals by preventing their infection.

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Affiliation of the authors at the time of publication

Equine Diseases Study Group (COPAR), Animal Pathology Department, Veterinary Faculty, Santiago de Compostela University, 27002-Lugo, Spain (Arias, Cazapal-Monteiro, Migue´lez, Sa´nchez-Andrade, Paz-Silva); Marcelle Natureza Zoological Park, Outeiro de Rei, 27122-Lugo, Spain (Valderra´bano, Ro´is); Centro Nacional de Investigaciones Disciplinarias en Parasitología Veterinaria, Morelos, Me´xico (Lo´pezArellano, Mendoza de Gives); and CIISA/FMV/UTL, Po´lo Universita´rio do Alto, Avenida da Universidade Te´cnica, 1300, Lisboa, Portugal (Madeira de Carvalho)

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