So Ancardia wiki says

Eating a minotaur confuses the PC, and trains his/her Perception.

Not long after eating minotaur corpse I got some nasty message like

Gettin shaky.jpg

I checked my PC basic stats and discovered that I've lost 1 point of dexterity indeed.

Moreover it shows that I've also lost some appeareance points.

So it seems Minotaur's corpse does increase perception but slightly abuses Dex and App stats.