Investigation of milk flow from udder quarters

672 milk flow curves of 30 cows from the milkings of one quarter and from t he corresponding complete milkings of the respective following day were reg istered. With the aid of the ultrasound technique and an imaging analysis s ystem the teat channel lengths, the teat wall thickness and the teat tissue areas were meseared before and after milking. The duration of decreasing f low rate of the complete milking can be explained by the traits of the milk flow curves of the quarter milkings. The maximum flow rate and the average flow rate were influenced by the shape traits of the teat apex.