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Table 1 Injury scoring system using scratches and redness adapted from Widowski et al. [19]

From: Intermittent suckling with or without co-mingling of non-littermate piglets before weaning improves piglet performance in the immediate post-weaning period when compared with conventional weaning

Score 0 1 (Mild) 2 (Moderate) 3 (Severe)
Scratches No scratches were evident on the head, ears or flank 1 to 3 small (≤2 cm) scratches or areas of abraded skin on head, ears or flank 1 to 3 large (>2 cm) scratches or areas of abraded skin on head, ears or flank More than 3 scratches or larger areas of superficial skin loss on head, ears or flank
Redness No redness or swelling on the head, ears or flank Redness or swelling barely detectable on head, ears or flank Redness or swelling were obvious on head, ears or flank Irritation easily observed as darker reddening and/or moderate to severe swelling on head, ears or flank