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Table 3 Comparison of costs for the annual serological survey to substantiate freedom from IBR and EBL using conventional stratified random sampling (sRS) and combined targeted and baseline stratified random sampling (cTS&bsRS) (figures based on data by S. Menéndez, Swiss Federal Veterinary Office (2008), exchange ratio CHF/€ = 1.5)

From: Using scenario tree modelling for targeted herd sampling to substantiate freedom from disease

  Number of herds
to be tested
Number of individual
blood samples
Costs for the planning of the survey Costs for sampling and
laboratory analysis
Total costs for the full survey5
IBR
sRS 2,259 45,1801 8,700 € 912,000 € 964,800 €
cTS&bsRS 1,241 25,6502 11,800 €3 524,500 € 580,600 €
EBL
sRS 2,243 44,8601 8,700 € 903,100 € 955,900 €
cTS&bsRS 1,750 41,1602 11,800 €3 824,000 € 880,100 €
  1. 1 The average number of animals to be tested (eq. individual samples) per farm was set at 20 for randomly selected farms.
  2. 2 The average number of animals to be tested (eq. individual samples) per farm was set at 30 for farms selected targeted and at 20 for farms selected randomly (baseline sample).
  3. 3Additional administrative expenses for updating of "risk farms".
  4. 4 The costs include farm visits, sampling labour and material, shipment/postage expenses and laboratory costs.
  5. 5 The costs for the evaluation and reporting of the survey results do not differ between the two methods and are therefore not mentioned separately in the table, but are included in the total costs of the survey.