Luc Smessaert, a mixed-farmer and breeder in the Oise at Roy-Boissy, took blood samples from his animals or from the milk for cows in order to check the health of his breeding.

He explains the tricks of his profession to Sébastien Krebs' microphone.

Guest (s): Luc Smessaert, polyculteur breeder in the Oise at Roy-Boissy