Journal
PREVENTIVE VETERINARY MEDICINE
Volume 55, Issue 2, Pages 137-153Publisher
ELSEVIER
DOI: 10.1016/S0167-5877(02)00094-6
Keywords
bovine viral diarrhoea; enzootic bovine leukosis; Johne's disease; neosporosis; disease cost; spreadsheet model; risk analysis
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Our purpose was to determine direct production losses (milk loss, premature voluntary culling and reduced slaughter value, mortality loss, and abortion and reproductive loss) and treatment costs (veterinary services, medication cost, and extra farm labour cost) due to four infectious diseases in the Maritime provinces of Canada: bovine viral diarrhoea (BVD), enzootic bovine leukosis (EBL), Johne's Disease (JD), and neosporosis. We used a partial-budget model, and incorporated risk and sensitivity analyses to identify the effects of uncertainty on costs. Total annual costs for an average, infected, 50 cow herd were: JD$ 2472; BVD$ 2421; neosporosis $ 2304; EBL$ 806. The stochastic nature of the proportion of infected herds and prevalence of infection within a herd were used to estimate probability distributions for these ex post costs. For all diseases, these distributions were right skewed. A sensitivity analysis showed the largest effect on costs was due to milk yield effects. For example, changing milk production loss from 0 to 5% for BVD increased the costs for the disease by 266%. (C) 2002 Elsevier Science B.V All rights reserved.
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