Association between management practices and within-herd prevalence of Cryptosporidium parvum shedding on dairy farms in southern Ontario
| Autor: | Andrew S. Peregrine, Ken E. Leslie, Daryl V. Nydam, Todd F. Duffield, S. Wayne Martin, Lise A. Trotz-Williams |
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| Rok vydání: | 2008 |
| Předmět: |
Veterinary medicine
040301 veterinary sciences animal diseases Modified delphi Cattle Diseases Cryptosporidiosis Article 0403 veterinary science Feces Animal science Food Animals Surveys and Questionnaires Prevalence Animals Medicine Animal Husbandry Dairy calves Management practices Cryptosporidium parvum Ontario 2. Zero hunger biology business.industry 0402 animal and dairy science 04 agricultural and veterinary sciences Animal husbandry biology.organism_classification 040201 dairy & animal science Dairying Animals Newborn Risk factors Relative risk Herd Cattle Female Animal Science and Zoology business Herd prevalence |
| Zdroj: | Preventive Veterinary Medicine |
| ISSN: | 0167-5877 |
| DOI: | 10.1016/j.prevetmed.2007.03.001 |
| Popis: | To identify management practices associated with an increased within-herd prevalence of Cryptosporidium parvum shedding on dairy farms in southern Ontario, fecal samples were taken from 1089 calves aged 7–28 days, from 119 herds. Information on management practices was obtained by administering a questionnaire compiled using a modified Delphi technique. Data were analyzed using univariable and multivariable negative binomial regression. Overall, 30% of the calves in the study were shedding C. parvum oocysts, with at least one positive calf detected in 77% of herds. Within-herd prevalence ranged from 0 to 80%. Predictors significantly associated with an increased prevalence of shedding in multivariable modelling were the use of calf scour prophylaxis in cows (risk ratio [RR] 1.70, P |
| Databáze: | OpenAIRE |
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