Figure 1.
Figure 1.

Regression trees for the different welfare outcomes A) the prevalence of pigs with poor body condition in the first weaner stage, B) the prevalence of pigs with bursitis in the second weaner stage, C) the prevalence of huddling pigs in the first weaner stage, D) the prevalence of pigs with severe tail lesions in the finisher stage and E) the frequency of coughing/pig in the second weaner stage. The cut-off value of the carcass lesion shows the best division of farms with the average percentage of pigs affected or frequency given at the end of the arms for the different groups.

 


Figure 2.
Figure 2.

Receiver operating curve (ROC) representing the predictive performance of the model for identifying problem farms ( > 75th percentile) based on the prevalence of carcass lesions for poor body condition in the first weaner stage, bursitis in the second weaner stage and severe tail lesions in the finisher stage. AUC = area under the curve (95% CI); the diagonal line represents an AUC of 0.5.