Document Detail

Giardia and Cryptosporidium in dairy calves in British Columbia.
MedLine Citation:
PMID:  9360789     Owner:  NLM     Status:  MEDLINE    
A study was undertaken to determine the prevalence of Giardia infections in dairy calves and to compare Giardia and Cryptosporidium infections in calves of different ages. Fresh fecal samples were collected from 386 male and female Holstein calves (newborn to 24 wk) in 20 dairies located in the lower Fraser river valley area of British Columbia. Giardia intestinalis, Cryptosporidium parvum, and Cryptosporidium muris were enumerated in each sample after concentration by sucrose gradient centrifugation and immunofluorescent staining. Giardia was identified at all farm locations. The overall prevalence of Giardia in calves was 73% with a geometric mean cyst count of 1180 cysts per gram of feces (CI, 41 to 5014). Cryptosporidium parvum and C. muris were identified in 80% and 40% of the farms, respectively. The prevalence of C. parvum was 59%, and the geometric mean for oocysts was 457 oocysts per gram of feces (CI, 18 to 160). The prevalence of C. muris was only 2% and the mean oocyst counts were 54 oocysts per gram of feces. Giardiasis was not age dependent, and approximately 80% of the calves from 2 to 24 wk were infected. In contrast, C. parvum infections were predominant in calves 2 to 4 wk, while C. muris was demonstrated in calves older than 4 wk. Fourty-seven percent of calves with diarrhea had high numbers of Giardia cysts in their feces. Giardia infections are highly prevalent in dairy calves and should be considered in animals with diarrhea or failure to thrive.
M E Olson; N J Guselle; R M O'Handley; M L Swift; T A McAllister; M D Jelinski; D W Morck
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Canadian veterinary journal. La revue vétérinaire canadienne     Volume:  38     ISSN:  0008-5286     ISO Abbreviation:  Can. Vet. J.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1997-12-23     Completed Date:  1997-12-23     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0004653     Medline TA:  Can Vet J     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  703-6     Citation Subset:  IM    
Animal Health Unit, University of Calgary, Alberta.
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MeSH Terms
British Columbia / epidemiology
Cattle Diseases / epidemiology*,  parasitology
Cryptosporidiosis / epidemiology,  veterinary*
Cryptosporidium parvum*
Giardiasis / epidemiology,  veterinary*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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