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Table 2 Flocks of broilers tested positive for Salmonella in indoor and outdoor production in Sweden

From: Occurrence of Salmonella spp.: a comparison between indoor and outdoor housing of broilers and laying hens

Year No. slaughtered birds No. slaughtered flocks No. test-positive flocks No. birds in test-positive flocks No. birds in test-positive flocks/no. slaughtered birds (%) Proportion test-positive flocks (%)
Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor
2007 75,987,684 62,040 Nda Nda 10b 1 186,500 1400 0.25 2.26 Nda Nda
2008 76,029,408 79,055 Nda Nda 8 0 206,700 0 0.27 0.00 Nda Nda
2009 74,836,094 179,050 Nda Nda 1 3 35,000 4070 0.05 2.27 Nda Nda
2010 79,413,074 185,020 Nda Nda 17c 0 320,555 0 0.40 0.00 Nda Nda
2011 79,193,063 170,030 Nda Nda 3 1 47,000 400 0.06 0.24 Nda Nda
2012 77,903,897 170,045 Nda Nda 1 0 31,000 0 0.04 0.00 Nda Nda
2013 83,110,440 155,000 3233 43 1 0 61,800 0 0.07 0.00 0.03 0.0
2014 89,504,467 176,500 3232 44 2 0 55,000 0 0.06 0.00 0.06 0.0
2015 93,820,000 280,000 3329 61 13d 0 405,574 0 0.43 0.00 0.39 0.0
Total 729,798,117 1,456,740 9794 148 56 5 1,349,129 5870 0.18 0.40 0.16 0.0
  1. aNot available
  2. bThree of the flocks originated from a Salmonella—infected breeding flock
  3. c15 of the flocks originated from a Salmonella—contaminated hatchery
  4. dSix of the flocks originated from a Salmonella—infected breeding flock