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Table 1 Weekly prevalence (%) of porcine ear necrosis

From: Porcine ear necrosis in weaned piglets: prevalence and impact on daily weight gain

Weaning batch 1 2a 3a 4 5 6a All batches
Number of piglets at weaning 588 565 687 678 751 629 3898
Week post-weaning Prevalence (%) Average
1 0.0 0.2 0.1 0.0 0.3 0.2 0.2
2 0.3 0.9 0.1 0.9 0.8 0.3 0.6
3 0.9 2.0 0.7 0.9 0.7 0.3 0.9
4 1.9 10.1 4.7 4.6 4.0 4.8 4.9
5 12.5 20.3 7.2 10.2 9.3 17.7 12.5
6 23.8 23.6 10.7 16.8 14.2 28.8 19.2
7 21.8 31.6 11.1 23.7 20.0 32.0 22.9
Total 61.2 88.7 34.6 57.1 49.3 84.1 38.3
  1. Prevalence of PEN in weaned pigs during the nursery period. Values indicate the relation between affected piglets and the total number of pigs at the end of each week for each weaning batch
  2. aA mycotoxin detoxifier was added to the feed of weaning batches 2, 3 and 6