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The effect of two types of diet on populations of Ascaris suum and Oesophagostomum dentatum in experimentally infected pigs

Published online by Cambridge University Press:  06 April 2009

S. Petkevicius ,
H. Bjørn ,
A. Roepstorff ,
P. Nansen ,
K. E. Bach Knudsen ,
E. H. Barnes  and
K. Jensen
S. Petkevicius
Affiliation:
Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark Lithuanian Veterinary Institute, LI-4230 Kaisiadorys, Lithuania
H. Bjørn
Affiliation:
Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
A. Roepstorff
Affiliation:
Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
P. Nansen
Affiliation:
Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
K. E. Bach Knudsen
Affiliation:
Department of Animal Physiology and Biochemistry, National Institute of Animal Science, Research Centre Foulum, P.O. Box 39, DK-8830 Tjele, Denmark
E. H. Barnes
Affiliation:
Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
K. Jensen
Affiliation:
Department of Animal Science and Animal Health, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870 Frederiksberg C, Denmark
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Summary

This investigation compared the effect of two common types of diet on worm burdens and faecal egg counts of pigs inoculated with Ascaris suum and Oesophagostomum dentatum. The diets were both considered nutritionally sufficient for pigs of this age, and gave high and comparable growth rates. Pigs were inoculated with both worm species at 14 weeks of age and slaughtered 3 or 12 weeks later. At 3 weeks, A. suum larvae were numerous in the small intestine of pigs fed ground barley plus protein supplement, but were not detected from pigs fed a commercial full-constituent pelleted feed. At 12 weeks, however, average adult worm burdens were low and similar in both groups. At both slaughter times, O. dentatum worm burdens were significantly higher in pigs fed barley plus protein than in pigs given commercial feed, particularly for female worms, and the commercial diet led to worms being located further along the large intestine, and to reduced worm fecundity. The chemical composition of large intestinal contents differed significantly between pigs fed the two diets.

Keywords

pigsAscaris suumOesophagostomum dentatumdietpopulationnutrition
Type
Research Article
Information
Parasitology , Volume 111 , Issue 3 , September 1995 , pp. 395 - 401
Copyright
Copyright © Cambridge University Press 1995

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