VERFAHREN ZUR ÜBERWACHUNG DER QUALITÄT BEI DER MILCHABGABE VON TIEREN

Milk from the inflamed teat of a cow is identified by an on-line conductivity measurement carried out on the milk from the teat. The signal from the conductivity measurement cell (23) is fed in digital form to a digital signal processor which carries out low-pass filtering and an amplitude filtering. The milking operation is divided into numerous intervals and the signal processor (30) determines a characteristic conductivity value for each interval. The characteristic conductivity values of the entire milking operation are stored in a memory (31) for later comparison with other milking operations. The conductivity values of the milk from the four teats are compared with each other during the current milking operation. An abnormally high conductivity is taken as the symptom of a diseased teat. Long-term comparisons are also carried out to ascertain the trend of the normal conductivity value.