At 2 small milking farms by a pipeline machines for milking are milked the reaction of this cows on change a milking systems from alternating (I) to simultaneous (the same as at robots) and a return to alternative (II) were analyzed. This mean are perceived that the exchange of milking systems non only on value of SCC in quarter milk from these cows was augmented, but the reactions of healthy quarters in comparison to mastitic were different. The positive reaction of healthy quarters are consisted that after exchange from alternating (I) to simultaneous system a value of SCC in milk from milked quarters was decreased and during return to alternating (II) were increased again. There were by significant differences of analyzed SCC values as well as among their natural logarithms even are highly significant. However, at the quarters affected by mastitis 3 another reactions were registered. Because a reaction of animals from a 3 group were the same as at healthy quarters, in a 2 group the reaction on change in milking systems are not existed, but after a return to alternative (II) even small improvement were followed, whereas in a 1 group the situation after each changes of milking systems were deteriorated. These 3 another reactions in milk are milked from a mastitic quarters by 3 epidemiologic types of udders infections will be resulted. Whereas during theses comparisons in small milking farms the estimated a prototype of quadric-quarter milker to records were useful.

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