Journal
PREVENTIVE VETERINARY MEDICINE
Volume 83, Issue 1, Pages 11-23Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.prevetmed.2007.03.001
Keywords
Cryptosporidium parvum; dairy calves; risk factors; Ontario
Categories
Ask authors/readers for more resources
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 < 0.01) and calves (RR 1.38, P = 0.02) and the feeding of milk replacer in the first week of life (RR 1.40, P = 0.02). In contrast, the presence of concrete flooring in calf housing areas (RR 0.59, P < 0.01) and the use of soap or detergent when washing calf feeding utensils (RR 0.61, P < 0.01) appeared to be protective. (C) 2007 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available