PMID: 9187031Apr 1, 1997Paper

Epidemiological observations on gastrointestinal nematode infections in grazing cow-calf pairs in Belgium

Veterinary Parasitology
J AgneessensJ Vercruysse

Abstract

The epidemiology of gastrointestinal helminth infections in beef cows and calves on pasture was studied in Belgium during the 1990 and 1992 grazing seasons. Weight gain, faecal egg counts, generic differentiation of infective larvae, serum pepsinogen levels, herbage larval counts and worm burdens of tracer calves were used as parameters. In Study 1 two groups of ten cows with their spring-born calves grazing on separate pastures (A and B) were monitored during the 1990 grazing season. Ostertagia ostertagi was the predominant species shed by cows and calves. Cows on Pasture A had significantly higher egg counts at turn-out than the B cows, creating a high pasture contamination in the autumn, evidenced by high Ostertagia worm burdens in the Pasture A tracer calves. Calves of both groups showed low egg counts (mean < 60 eggs g-1 faeces, EPG) throughout the grazing season. In Study 2 nine cow-calf pairs were monitored during the 1992 grazing season. The calves were born in winter or spring. Faecal egg counts of the cows remained low throughout the trial period. During the grazing season high egg counts were observed in the calves (mean up to 778 EPG). Cooperia oncophora was the predominant species in the calves. In the cows O. oste...Continue Reading

References

May 1, 1992·Veterinary Parasitology·S RanjanS Bauck
Feb 1, 1993·Veterinary Parasitology·H C Gibbs
Feb 1, 1993·Veterinary Parasitology·B E Stromberg, R M Corwin

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Citations

Feb 27, 1999·International Journal for Parasitology·J Vercruysse, P Dorny
May 7, 2013·The Veterinary Record·Andrew B Forbes, Kathryn A Ellis
Feb 2, 2016·International Journal for Parasitology·Friederike Knapp-LawitzkeJanina Demeler
Mar 3, 2009·Veterinary Parasitology·N Kemper, C Henze
Oct 26, 2006·Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health·C NogaredaM Cordero del Campillo
Sep 26, 2000·The Korean Journal of Parasitology·M M MondalB K Baek
Jun 28, 2005·Veterinary Parasitology·Michael JägerHorst Zahner

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