licol marqueur à bille

CONT: Another [heat detection] device is the chinball marker, worn beneath the chin of a teaser bull or cow. It works like a ballpoint pen, leaving an ink or paint mark on the back of the cow that has been mounted.

OBS: Así, cada vez que montan una res, aplican presión en la espalda o cadera del animal, liberando el líquido e indicando que ha sido montada.