Fig. 3

Boxplot of the extracted face scores for six horses assessed 1Â h before, 24Â h and 48Â h after (procedure) implantation of a biopolymer in the subcutaneous space of the region of the neck board. The extracted face scores represented a vector from Principal Component Analysis (PCA) that concentrates the values of all face variables (ears position, orbital tightening, inner brow raiser, eye tightness, nostril dilated, tension of the muzzle and tonus of the masticatories muscles) included in the PCA referring to the same dimension