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. 2009 May 23;51(1):23. doi: 10.1186/1751-0147-51-23

Table 3.

Least-squares means for scores in each housing system and age, and pairwise t-tests between the groups.

Day 3
Group Carpus Hock Abdomen&teats Face Tail Feet Castration wounds
Group I (Control) 1.01 0.20 0.09 0.14 0.05 0.87 -
Group II (Double straw) 0.71 0.12 0.15 0.09 0.03 0.65 -
Group III (Piglet Floor®) 0.57 0.15 0.10 0.03 0.03 0.55 -
Group IV (Thorocrete SL®) 0.47 0.09 0.06 0.10 0.08 0.46 -
Differences between groups
Group II – Group I -0.30** -0.08n.s. 0.06n.s. -0.05n.s -0.02n.s. -0.22** -
Group III – Group I -0.44*** -0.05n.s. 0.01n.s. -0.11n.s -0.02n.s -0.32*** -
Group IV – Group I -0.54*** -0.11** -0.03n.s. -0.04n.s 0.03n.s. -0.41*** -
Group III – Group II -0.14n.s. 0.03n.s. -0.05n.s. -0.06n.s 0.00n.s. -0.10n.s. -
Group IV – Group II -0.24** -0.03n.s -0.09*** 0.01n.s 0.05n.s. -0.19** -
Group IV – Group III -0.10n.s. -0.06n.s. -0.04n.s. 0.07n.s 0.05n.s -0.01n.s. -
Day 10
Group Carpus Hock Abdomen&teats Face Tail Feet Castration wounds
Group I (Control) 0.91 0.09 0.01 0.26 0.04 0.36 0.14
Group II (Double straw) 0.71 0.10 0.03 0.13 0.04 0.43 0.21
Group III (Piglet Floor®) 0.54 0.01 0.00 0.08 0.01 0.17 0.03
Group IV (Thorocrete SL®) 0.51 0.03 0.01 0.09 0.05 0.23 0.12
Differences between groups
Group II – Group I -0.21* -0.01n.s -0.02n.s -0.13* -0.00n.s. 0.07n.s. 0.08n.s
Group III – Group I -0.37*** -0.08n.s -0.01n.s -0.17*** -0.03n.s -0.19* -0.11*
Group IV – Group I -0.40*** -0.06n.s 0.00n.s -0.17*** -0.01n.s. -0.13* -0.02n.s
Group III – Group II -0.17n.s. -0.09n.s -0.03n.s -0.05n.s -0.03n.s -0.26*** -0.18**
Group IV – Group II -0.20 -0.07n.s -0.02n.s -0.04n.s -0.01n.s. -0.20** -0.09n.s
Group IV – Group III -0.03* n.s. 0.02n.s 0.01n.s 0.01n.s. 0.04n.s -0.06n.s. 0.09n.s
Day 17
Group Carpus Hock Abdomen&teats Face Tail Feet Castration wounds
Group I (Control) 0.43 0.06 0.00 0.21 0.00 0.27 0.09
Group II (Double straw) 0.38 0.02 0.00 0.06 0.02 0.32 0.10
Group III (Piglet Floor®) 0.21 0.02 0.00 0.03 0.00 0.22 0.09
Group IV (Thorocrete SL®) 0.20 0.02 0.00 0.03 0.02 0.17 0.07
Differences between groups
Group II – Group I -0.05n.s. -0.04n.s. -0.00n.s. -0.15* 0.01n.s 0.05n.s. 0.01n.s
Group III – Group I -0.22* -0.04n.s. -0.00n.s. -0.18*** -0.00n.s -0.05n.s. -0.00n.s
Group IV – Group I -0.23*** -0.04n.s. -0.00n.s. -0.18*** 0.01n.s. -0.10n.s. -0.02n.s
Group III – Group II -0.17n.s. -0.00n.s. -0.00n.s. -0.03n.s -0.01n.s -0.10n.s. -0.01n.s
Group IV – Group II -0.18n.s. -0.00n.s. -0.00n.s. -0.03n.s -0.00n.s -0.15n.s. -0.03n.s
Group IV – Group III -0.01n.s. -0.00n.s. -0.00n.s. -0.00n.s. 0.01n.s -0.05n.s. -0.02n.s

ns: not significant; *: p < 0.05 **: p < 0.01; ***: p < 0.001

For true percentages of affected pigs regardless of the score of the lesion, see figures 1 – 6.