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The use of soy protein polymers as a release device for nematophagous fungi in the control of parasitic nematodes in ruminants

Published online by Cambridge University Press:  11 June 2013

M.F. Sagüés ,
P. Purslow ,
A.S. Fernández ,
L.E. Iglesias ,
L.A. Fusé  and
C.A. Saumell
M.F. Sagüés*
Affiliation:
Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Buenos AiresB7000GHG, Argentina Área de Parasitología y Enfermedades Parasitarias, Departamento de Sanidad Animal y Medicina Preventiva, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
P. Purslow
Affiliation:
Department of Food Science, Ontario Agricultural College, University of Guelph, Guelph, Canada
A.S. Fernández
Affiliation:
BioNem Research Centre, Guelph, Canada
L.E. Iglesias
Affiliation:
Área de Parasitología y Enfermedades Parasitarias, Departamento de Sanidad Animal y Medicina Preventiva, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
L.A. Fusé
Affiliation:
Área de Parasitología y Enfermedades Parasitarias, Departamento de Sanidad Animal y Medicina Preventiva, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
C.A. Saumell
Affiliation:
Área de Parasitología y Enfermedades Parasitarias, Departamento de Sanidad Animal y Medicina Preventiva, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
*
*Fax: +54 249 4439850 E-mail: federica@vet.unicen.edu.ar
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Abstract

This trial was conducted to evaluate the predatory activity of Duddingtonia flagrans incorporated into soy protein-based polymers as a controlled-release device (CRD). The rate of fungal release from the polymers and time of residence of the CRD in the rumen of a cannulated sheep was also determined. After administration to the sheep, the CRD was extracted at weekly intervals over a month for observation of its physical structure and faeces were collected to observe the subsequent predatory activity of the fungus in Petri dishes with water-agar 2% and Panagrellus spp. as bait. The CRD slowly degraded in the rumen over 4 weeks and liberated D. flagrans into the faeces. The formulation of the soy protein-based polymers did not affect the predatory activity of the fungus. The study demonstrates that biodegradable soy protein polymers could potentially improve the use of nematophagous fungi for controlling nematode parasites of ruminants.

Type
Research Papers
Information
Journal of Helminthology , Volume 88 , Issue 4 , December 2014 , pp. 511 - 514
Copyright
Copyright © Cambridge University Press 2013 

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