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Table 3 Distribution of provincial abattoirs 2001 – 2007 among census agricultural regions in Ontario based on three sentinel selection approaches

From: Suitability of sentinel abattoirs for syndromic surveillance using provincially inspected bovine abattoir condemnation data

Selection approach Number of abattoirs Central Ontario Eastern Ontario Northern Ontario Southern Ontario Western Ontario
Full dataset 1 98 18% (18) 15% (15) 7% (7) 36% (35) 23% (23)
Abattoirs open all weeks 2 45 18% (8) 13% (6) 7% (3) 38% (17) 24% (11)
Multi-criteria 3 44 9% (4) 18% (8) 5% (2) 39% (17) 30% (13)
Large abattoirs 4 7 29% (2) 0% (0) 0% (0) 43% (3) 29% (2)
  1. 1Abattoirs processing at least 1 bovine carcass each year of study period (2001 – 2007).
  2. 2Abattoirs processing at least 1 bovine carcass 52 weeks per year.
  3. 3Selection of abattoirs meeting the following criteria: processed at least 499 cattle per year, processed at least 1 bovine carcass 44 weeks or more per year, processed cattle representing all animal classes (calves, cows, heifers and steers).
  4. 4Abattoirs processing ≥ 6500 cattle per year.