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Related Experiment Videos

Giardiasis in lambs at pasture

M A Taylor1, J Catchpole, R N Marshall

  • 1Parasitology Department, Central Veterinary Laboratory, New Haw, Addlestone, Surrey.

The Veterinary Record
|August 7, 1993
PubMed
Summary

Giardia species were detected in 68.6% of lambs, with peak excretion around 37 days old. Lamb diarrhea was linked to Eimeria ovinoidalis, not Giardia.

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Area of Science:

  • Veterinary Parasitology
  • Animal Health
  • Microbiology

Background:

  • Giardia species are protozoan parasites that can infect various animals, including lambs.
  • Understanding the prevalence and shedding patterns of Giardia in young livestock is crucial for herd health management.

Purpose of the Study:

  • To investigate the prevalence and shedding dynamics of Giardia species in pasture-raised lambs.
  • To determine the age at which Giardia infection is most common in lambs.

Main Methods:

  • Faecal samples were collected weekly from 86 lambs over a nine-week period.
  • A modified zinc sulphate flotation technique was employed to detect Giardia cysts.
  • Lamb age and occurrence of diarrhoea were recorded.

Main Results:

  • Giardia cysts were detected in 59 out of 86 lambs (68.6%) at least once during the study.
  • Infection was first observed around three weeks of age.
  • Peak cyst excretion occurred in lambs with a mean age of 37 days.
  • Diarrhoea observed in the lambs was attributed to Eimeria ovinoidalis, not Giardia.

Conclusions:

  • Giardia species infection is common in young, pasture-raised lambs.
  • The study provides insights into the age-related shedding patterns of Giardia in lambs.
  • Co-infection or concurrent conditions, like Eimeria ovinoidalis, should be considered when diagnosing diarrhoea in lambs.

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