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An attempt to implement the nematode-trapping fungus Duddingtonia flagrans in biological control of trichostrongyle infections of first year grazing calves

Published online by Cambridge University Press:  05 June 2009

J. Wolstrup ,
J. Grønvold ,
S.A. Henriksen ,
P. Nansen ,
M. Larsen ,
H.O. Bøgh  and
B. Ilsøe
J. Wolstrup
Affiliation:
Department of Ecology and Molecular Biology, Microbiology Section, Royal Veterinary and Agricultural University, 21 Rolighedsvej, DK-1870 Frederiksberg C, Denmark
J. Grønvold
Affiliation:
Department of Ecology and Molecular Biology, Section of Zoology, Royal Veterinary and Agricultural University, 21 Rolighedsvej, DK-1870 Frederiksberg C, Denmark
S.A. Henriksen
Affiliation:
National Veterinary Laboratory, 27 Bülowsvej, DK-1790 Copenhagen V, Denmark
P. Nansen
Affiliation:
Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
M. Larsen
Affiliation:
Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
H.O. Bøgh
Affiliation:
Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
B. Ilsøe
Affiliation:
Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
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Abstract

An attempt was made to control Ostertagia ostertagi by feeding the nematode-trapping fungus Duddingtonia flagrans (DSM 6703) to grazing calves. One group of calves (group E) was fed the fungal material in the first two months of the grazing season while another group was a non-treated control group (group C). Group E showed significantly lower faecal egg count in August and September. On four occasions in July and September, the herbage larval counts were significantly lower on the plot with the fungal-treated group than those recorded on the control plot. The average abomasal larval and adult worm counts were significantly reduced in August in group E and the average total worm count in the abomasum of group E was reduced by 87% in August compared to the non-treated group C. In October, the difference in average abomasal worm counts between group E and C was insignificant. Due to weight loss at the end of the grazing season, the control group showed a significantly lower average weight increase.

Type
Research Papers
Information
Journal of Helminthology , Volume 68 , Issue 2 , June 1994 , pp. 175 - 180
Copyright
Copyright © Cambridge University Press 1994

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