MATERIALS AND METHODS Ten healthy cows from three cattle farms across Romania, namely 2 from Bistrița Năsăud, 4 from Râmnicu Vâlcea and 4 from Constanța counties were selected. A specially designed funnel was placed on the skin of the animal after removing the hair (Fig. 1). The funnel was connected through a Tygon tube to a small, portable and settable vacuum pump that forced the gases to pass through a biological PTFE filter and through a Tenax tube that captures the VOCs. The Tenax tubes contain a porous